Bad test, fix the test

Reviewed-on: #51

.forgejo/workflows/buildAndTest.yml

@@ -48,4 +48,4 @@ jobs:
           --verbosity normal \
           --filter="Category!=Platform-Android" \
           --logger "xunit;LogFileName=test-results.xml" \
-          && echo "✅ Success !" || echo "❌ Fail ($?)!"
+          && echo "✅ Success !" || { echo "❌ Fail ($?)!"; exit 1; }

.forgejo/workflows/release.yml

@@ -175,6 +175,12 @@ jobs:
         run: |
           cd /src/_src
           dotnet restore
+      - name: Test
+        run: |
+          cd /src/_src && dotnet test \
+          --verbosity normal \
+          --filter="Category!=Platform-Android" \
+          --logger "xunit;LogFileName=test-results.xml"
 
       - name: Build de PostIt.Android ARM64
         run: |
@@ -200,6 +206,7 @@ jobs:
           RELEASE_BODY: ${{ env.RELEASE_BODY }}
           IS_PRERELEASE: ${{ env.IS_PRERELEASE }}
         run: |
+          set -e
           if [[ -z "$TAG" ]]; then
             echo "::error::No tag resolved for the API call."
             exit 1

.gitignore

@@ -35,6 +35,7 @@ appsettings-*.*.json
 
 generated/
 *.tmp
+tmp/
 DataDir/
 
 *.tests.trx

.vscode/tasks.json

@@ -7,7 +7,7 @@
           "fileLocation": ["relative", "${workspaceFolder}"],
           "source": "dotnet",
           "pattern": {
-            "regexp": "^\\s+(.*)\\((\\d+),(\\d+)\\):\\s+(error|warning) (.+): (.*)$",
+            "regexp": "^\\s*(.*)\\((\\d+),(\\d+)\\):\\s+(error|warning) (.*)$",
             "file": 1,
             "line": 2,
             "column": 3,

CHANGELOG.md

@@ -1,5 +1,80 @@
 # Changelog
 
+## [1.0.8-rc14] - unstable
+
+### Added
+
+* [PostIt] Ajout d'un `BillingQueryDetailsPageViewModel` et de sa page associee pour afficher le detail d'une commande billing depuis l'historique.
+* [PostIt] Ajout d'un mode detail avec section metier (statut, date, description, motif, infos) et section technique repliable (code, client, provision, lieu, prestations).
+* [PostIt] Ajout d'un badge de statut enrichi (couleur + pictogramme) sur le detail d'une commande pour visualiser l'etat en un coup d'oeil.
+* [PostIt] Ajout d'un bloc d'actions rapide en tete du detail (`Retour`, `Ouvrir en edition`) pour eviter le scroll jusqu'au bas de page.
+* [PostIt] Ajout d'un style monospace sur les metadonnees techniques (code billing, client, provision, lieu, prestations) pour faciliter la lecture des identifiants et valeurs brutes.
+
+### Changed
+
+* [PostIt] Le bouton d'ouverture depuis la liste billing ouvre maintenant une page de detail dediee avant l'eventuelle edition.
+* [PostIt] Amelioration UX des pages billing: badges de statut colores, actions remontees en haut de page, et typographie monospace sur les metadonnees techniques.
+
+### Fixed
+
+* [Yavsc.Api] Correction d'un 500 sur le refresh du catalogue d'activites lorsque `Activity.Description` est `NULL` en base (nullabilite explicite + projection null-safe + gardes sur codes vides).
+* [Yavsc.Api] Correction des erreurs 400/500 sur les routes billing (`Rdv`, `Brush`, `MBrush`) en imposant `ClientId` depuis l'utilisateur authentifie et en ignorant les champs server-owned lors de la validation modele.
+* [Yavsc.Api] Correction du `PUT /api/v1/billing/Rdv/{id}`: mise a jour controlee de l'entite existante (et non remplacement brut du graphe JSON), ce qui supprime les `BadRequest` parasites.
+* [Yavsc.Api] Correction PostgreSQL `timestamptz` sur RDV: normalisation UTC de `EventDate` sur `POST/PUT /api/v1/billing/Rdv` pour eviter l'erreur `Cannot write DateTime with Kind=Local`.
+* [Yavsc.Api] Correction du flux FrontOffice accept/reject de query: sauvegarde avec contexte utilisateur et fallback d'injection pour `IBillingService` afin d'eviter les erreurs serveur en environnement de test.
+* [Yavsc.Blogs] Correction des `BadRequest` sur `POST/PUT /api/v1/blogspot` avec payload JSON (PostIt): les proprietes de navigation/serveur (`Author`, `Tags`, `Comments`, audit) ne bloquent plus la validation.
+* [Yavsc.Org] Correction du flux MVC de creation de commentaire: `SaveChangesAsync(userId)` est utilise pour renseigner les champs d'audit requis (`UserCreated`/`UserModified`).
+* [Yavsc.Api.Test] Stabilisation des fixtures de seed billing: remplissage des metadonnees d'audit (`UserCreated`, `UserModified`, dates) pour eviter les echecs SQLite `NOT NULL`.
+
+## [1.0.8-rc13] - unstable
+
+### Added
+
+* [PostIt] Integration d'un selecteur de lieu RDV base sur Mapsui (carte interactive dans le formulaire `Rdv`).
+* [PostIt] Ajout d'un marqueur de position et d'une action de recentrage sur la carte RDV.
+* [PostIt] Ajout d'un service de reverse geocoding pour suggerer une adresse a partir des coordonnees carte.
+* [PostIt] Cache et debounce des resolutions d'adresse RDV pour limiter les appels reseau et lisser l'UX.
+* [PostIt.Tests] Nouvelles non-regressions sur le panneau d'adresse suggeree RDV et le comportement de la carte.
+* [Yavsc.Abstract] Activation de `#nullable enable annotations` sur les fichiers legacy avec annotations nullable.
+* [Yavsc.Server] Activation de `#nullable enable annotations` sur les fichiers legacy avec annotations nullable.
+
+### Changed
+
+* [PostIt] Generalisation de la barre de statut d'action (severite explicite) sur pages principales, dialogues et formulaires billing.
+* [PostIt] Harmonisation des messages de statut utilisateur en francais.
+* [PostIt] Renforcement des gardes de navigation dans les flux de gestion des membres de cercle.
+* [PostIt] Le flux RDV conserve l'adresse saisie manuellement et propose l'adresse resolue comme suggestion explicite.
+* [PostIt] Le flux de geolocalisation RDV tolere les positions proches dans le cache de suggestion d'adresse.
+
+### Fixed
+
+* [PostIt.Desktop] Correction d'un crash au demarrage OIDC (`No authority specified`) via durcissement des valeurs par defaut de configuration d'authentification.
+* [PostIt] Correction de la persistance des settings: l'etat runtime de statut n'est plus serialize dans le JSON utilisateur.
+* [PostIt.Tests] Ajout d'un verrou de non-regression sur le premier chargement des settings.
+* [PostIt] Correction du binding de la date RDV: `DatePicker.SelectedDate` est aligne sur un proxy `DateTimeOffset?` (`EventDateSelection`).
+
+## [1.0.8-rc12] - unstable
+
+### Added
+
+* [PostIt] Nouveau helper d'image `ImageHelper` pour charger des bitmaps depuis les ressources et depuis le web.
+* [PostIt] Affichage de l'avatar XS dans la liste des performers d'activites, avec fallback visuel (initiale utilisateur).
+* [PostIt.Tests] Nouveaux tests autour des URLs avatar et de la source d'autorite.
+* [contrib] Ajout d'un `README.md` utilitaire pour les symboles/icones.
+
+### Changed
+
+* [PostIt] Les avatars ne sont plus relies en string sur `Image.Source`: ils sont telecharges et lies en `Bitmap`.
+* [Yavsc.Api.Client] `ActivityApiClient` accepte une base d'avatar dediee et construit les URLs avatar depuis l'autorite d'identification.
+* [PostIt] Les clients Activites/Billing utilisent maintenant `ApiUrl` en lecture dynamique: un changement via Parametres prend effet sans redemarrer l'application (apres sauvegarde et rafraichissement de la page).
+* [PostIt] Le header de `MainPage` n'utilise plus `ScrollViewer`; remplacement par une barre de commandes basee sur `WrapPanel`.
+* [PostIt] Alignement de la navigation blogs: renommage `PushMainPageAsync` -> `PushBlogsPageAsync` et ajustement de `HomePageViewModel`.
+
+### Fixed
+
+* [PostIt.Android] Correction d'un 404 sur la page Activites au premier lancement: la configuration embarquee pointait `ApiUrl` vers le host Blogs au lieu de l'API metier.
+* [PostIt] Correction du bouton Sauver de la page Parametres: binding vers `SaveCommand` pour persister correctement `ApiUrl`/`BlogsApiUrl`.
+
 ## [1.0.8-rc11] - unstable
 
 ### Added

CONTRIBUTING.md

@@ -49,6 +49,19 @@ Les tests sont répartis en :
   item « Tests d'intégration smoke par BC ».
 - `src/PostIt.Tests/` — tests unitaires du client desktop PostIt.
 
+## Onboarding assiste par agents IA
+
+Pour accelerer la prise en main du depot avec Copilot/Plan/Explore :
+
+- Parcours pas-a-pas : [doc/onboarding-agents.md](./doc/onboarding-agents.md)
+- Playbook d'usage des agents : [doc/agent-playbook.md](./doc/agent-playbook.md)
+- Matrice intentions -> agent -> preuves : [doc/agent-intent-matrix.md](./doc/agent-intent-matrix.md)
+
+Regle minimale en contribution assistee par agent :
+- expliciter l'impact architecture,
+- justifier le niveau de tests execute,
+- documenter les risques residuels.
+
 ## Le CHANGELOG.md
 
 Le `CHANGELOG.md` est un document de changement de version
@@ -61,8 +74,8 @@ et ce projet adhère au [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 À noter : la **parité du numéro de patch** porte une signification de canal :
 
-- **patch pair** (ex. `1.0.0`, `1.0.2`) → **stable**
+- **patch pair** (ex. `1.0.0`, `1.0.2`) → **preview**
-- **patch impair** (ex. `1.0.1`, `1.0.3`) → **preview**
+- **patch impair** (ex. `1.0.1`, `1.0.3`) → **stable**
 - **suffixe** (ex. `1.0.0-rc1`, `1.0.0-alpha`) → **instable**
 
 Cette convention est partagée avec le dépôt

Directory.Packages.props

@@ -1,16 +1,17 @@
 <Project>
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+    <IdentityServer8Version>8.1.0-pazofrc007</IdentityServer8Version>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="System.Security.Cryptography.Pkcs" Version="10.0.9" />
 
-    <PackageVersion Include="HigginsSoft.IdentityServer8" Version="8.1.0-pazofrc004" />
+    <PackageVersion Include="HigginsSoft.IdentityServer8" Version="$(IdentityServer8Version)" />
-    <PackageVersion Include="HigginsSoft.IdentityServer8.AspNetIdentity" Version="8.1.0-pazofrc004" />
+    <PackageVersion Include="HigginsSoft.IdentityServer8.AspNetIdentity" Version="$(IdentityServer8Version)" />
-    <PackageVersion Include="HigginsSoft.IdentityServer8.EntityFramework" Version="8.1.0-pazofrc004" />
+    <PackageVersion Include="HigginsSoft.IdentityServer8.EntityFramework" Version="$(IdentityServer8Version)" />
-    <PackageVersion Include="HigginsSoft.IdentityServer8.EntityFramework.Storage" Version="8.1.0-pazofrc004" />
+    <PackageVersion Include="HigginsSoft.IdentityServer8.EntityFramework.Storage" Version="$(IdentityServer8Version)" />
-    <PackageVersion Include="HigginsSoft.IdentityServer8.Security" Version="8.1.0-pazofrc004" />
+    <PackageVersion Include="HigginsSoft.IdentityServer8.Security" Version="$(IdentityServer8Version)" />
-    <PackageVersion Include="HigginsSoft.IdentityServer8.Storage" Version="8.1.0-pazofrc004" />
+    <PackageVersion Include="HigginsSoft.IdentityServer8.Storage" Version="$(IdentityServer8Version)" />
 
     <PackageVersion Include="AsciiDocSharp" Version="0.1.0" />
     <PackageVersion Include="AsciiDocSharp.Converters.Html" Version="0.1.0" />

README.md

@@ -28,6 +28,10 @@ sous [`doc/`](./doc/). Voir l'[index de la documentation](./doc/README.md)
 pour le sommaire complet. La racine de l'architecture est
 [Architecture.md](./doc/Architecture.md).
 
+Pour une prise en main guidee avec agents IA:
+- parcours onboarding: [doc/onboarding-agents.md](./doc/onboarding-agents.md)
+- playbook d'usage: [doc/agent-playbook.md](./doc/agent-playbook.md)
+
 
 # Construction et déploiement
 

contrib/README.md

@@ -0,0 +1,5 @@
+# Read me
+
+## Note aux icones
+
+㝉®🅬⛒⛑🩎🩺🞫🞮🞕🞖🞆🔴🔵🔲🖂🔧🔩🔐🔌💾💼💬💭👿👾🏷🎯🏹🌍🎎💩

doc/README.md

@@ -18,6 +18,9 @@ La racine de l'architecture est [Architecture.md](Architecture.md).
 | [architecture/postit.md](architecture/postit.md) | PostIt — topologie des projets, ViewLocator custo, navigation, DI, conventions de binding |
 | [architecture/decoupage-organisation.md](architecture/decoupage-organisation.md) | Découpage des projets .NET (Abstract, Server, Org, Api, Blogs, Web, Org.Tests) |
 | [testing.md](testing.md) | Stratégie de test : conventions des dossiers, EF Core in-memory, auth stubs, scaffold partagé |
+| [onboarding-agents.md](onboarding-agents.md) | Parcours pas-à-pas pour prise en main agents IA + architecture + tests |
+| [agent-playbook.md](agent-playbook.md) | Playbook d'usage de Copilot, Plan, Explore avec scénarios et anti-patterns |
+| [agent-intent-matrix.md](agent-intent-matrix.md) | Matrice intentions développeur -> agent -> preuves attendues |
 
 ## Roadmap & design exploration
 

doc/agent-intent-matrix.md

@@ -0,0 +1,20 @@
+# Matrice intentions -> agent -> preuves
+
+Cette matrice aide a choisir rapidement l'agent adapte et a exiger
+une sortie verifiable.
+
+| Intention developpeur | Agent principal | Entrees minimales | Sortie minimale attendue | Verification |
+|---|---|---|---|---|
+| Comprendre un BC avant changement | Explore | BC cible, profondeur, contrainte de perimetre | Composants, points d'entree, tests relies, risques | Lire les fichiers cites + confirmer tests proposes |
+| Decomposer une tache transverse | Plan | Objectif, contraintes, definition of done | Etapes ordonnees, dependances, criteres de verif | Verifier que chaque etape a une preuve observable |
+| Implementer une modif locale | Copilot | Fichier cible, comportement attendu, conventions | Patch minimal, justification courte | Build/test du projet impacte |
+| Ajouter un test smoke | Copilot (+Explore) | Route/endpoint, projet de test cible | Test + commande cible | Execution test cible |
+| Corriger une regression | Plan + Copilot | Symptome, zone suspecte, test attendu | Fix + test NonRegression | Test rouge avant, vert apres |
+| Diagnostiquer flux PostIt/OIDC | Explore + Plan | Flux, symptome, plateforme | Carte du flux + hypotheses testables | Verification manuelle + tests existants |
+
+## Regles d'arbitrage
+
+- Si l'intention est "comprendre": commencer par Explore.
+- Si l'intention est "orchestrer": commencer par Plan.
+- Si l'intention est "produire": utiliser Copilot apres cadrage.
+- Si une sortie n'inclut pas de preuve, elle est incomplete.

doc/agent-playbook.md

@@ -0,0 +1,101 @@
+# Playbook d'usage des agents IA (Yavsc)
+
+Ce playbook normalise l'usage de Copilot, Plan et Explore dans le depot.
+Il privilegie des sorties verifiables: fichiers, commandes tests, risques.
+
+## Quand utiliser quel agent
+
+- Plan: quand la tache est ambigue, transverse ou risquee.
+- Explore: quand il faut cartographier rapidement des zones du code.
+- Copilot: quand les specifications sont claires et localisees.
+
+## Prompt type (base)
+
+Utiliser ce squelette avant toute tache non triviale:
+
+```text
+Contexte: <projet/fichier/fonction>
+Objectif: <resultat observable>
+Contraintes: <style, archi, perimetre>
+Verification: <tests exacts a lancer>
+Sortie attendue: <fichiers modifies + risques>
+```
+
+## 4 scenarios de reference
+
+## 1) Explorer un bounded context
+
+Intention:
+- Comprendre ou implementer un changement dans un BC sans regression laterale.
+
+Prompt minimal:
+```text
+Explore le BC <nom> avec profondeur medium.
+Retour: composants touches, points d'entree, tests existants et risques.
+```
+
+Preuves attendues:
+- Carte des fichiers a modifier.
+- Test(s) smoke/mandatory proposes.
+
+## 2) Ajouter un smoke test
+
+Intention:
+- Couvrir rapidement un endpoint ou une route publique.
+
+Prompt minimal:
+```text
+Propose un smoke test pour <route/endpoint> dans le projet de test approprie.
+Respecte les conventions de doc/testing.md.
+```
+
+Preuves attendues:
+- Fichier test cree/modifie.
+- Commande precise pour executer le test cible.
+
+## 3) Corriger une regression backend API
+
+Intention:
+- Corriger un bug sans casser un flux voisin.
+
+Prompt minimal:
+```text
+Planifie puis implemente un fix de <symptome> dans <projet>.
+Ajoute/ajuste un test NonRegression rouge puis vert.
+```
+
+Preuves attendues:
+- Explication cause racine.
+- Test non-regression associe.
+- Commande d'execution et resultat attendu.
+
+## 4) Tracer un flux PostIt/OIDC
+
+Intention:
+- Localiser une cassure d'authentification entre client et serveur.
+
+Prompt minimal:
+```text
+Cartographie le flux OIDC PostIt: entrypoints, callback, stockage token,
+refresh. Donne points de rupture probables et tests/verification proposes.
+```
+
+Preuves attendues:
+- Liste ordonnee des etapes du flux.
+- Fichiers critiques.
+- Hypotheses testables.
+
+## Anti-patterns a eviter
+
+- Prompt sans objectif verifiable.
+- Demande trop large sans perimetre de fichiers.
+- Validation basee uniquement sur "ca semble correct".
+- Pas de lien entre changement et niveau de test.
+
+## Gate PR minimale (agent-assiste)
+
+Avant validation:
+- Impact architecture explicite.
+- Rationale de choix agent explicite.
+- Test(s) executes et justifies.
+- Risques residuels documentes.

doc/onboarding-agents.md

@@ -0,0 +1,73 @@
+# Onboarding guide: agents IA + architecture + tests
+
+Ce guide est optimise pour accelerer la prise en main des agents IA
+(Copilot, Plan, Explore) dans Yavsc, avec une verification rapide
+par les tests.
+
+## Resultat attendu
+
+A la fin du parcours, un contributeur doit pouvoir:
+- Identifier les projets impactes par une modification.
+- Choisir l'agent adapte a l'intention de travail.
+- Produire une proposition de changement verifiable par les tests.
+
+## Parcours en 3 modules
+
+## Module A - Comprendre le terrain (30-45 min)
+
+Objectif: acquerir une lecture fiable de l'architecture.
+
+1. Lire [README.md](../README.md) puis [Architecture.md](Architecture.md).
+2. Lire [architecture/decoupage-organisation.md](architecture/decoupage-organisation.md).
+3. Selon le domaine:
+   - Backend/API: [architecture/workflow-multi-parties.md](architecture/workflow-multi-parties.md)
+   - PostIt: [architecture/postit.md](architecture/postit.md) puis [architecture/postit-oidc.md](architecture/postit-oidc.md)
+
+Definition of done:
+- Expliquer en 5 phrases quelles couches sont touchees.
+- Citer le ou les points d'entree applicatifs a verifier.
+
+## Module B - Boucle tests rapide (20-30 min)
+
+Objectif: verifier rapidement sans lancer toute la suite.
+
+1. Lire [testing.md](testing.md).
+2. Lancer les smoke tests d'abord, puis mandatory selon le projet.
+3. N'elargir au test complet que si le scope depasse le BC touche.
+
+Definition of done:
+- Fournir la commande test executee.
+- Expliquer pourquoi ce niveau de test est suffisant.
+
+## Module C - Usage agentique en production (30-40 min)
+
+Objectif: utiliser les agents comme accelerateurs, pas comme boites noires.
+
+1. Plan: decomposer la tache en etapes verifiables.
+2. Explore: collecter le contexte code/doc precise.
+3. Copilot: implementer localement et verifier.
+
+Regles:
+- Toujours donner un contexte explicite (fichier, but, contrainte).
+- Demander des preuves observables (fichiers modifies, tests, risques).
+- Refuser toute sortie non verifiable.
+
+Definition of done:
+- Une tache simple est livree avec:
+  - Plan
+  - Changement local
+  - Preuve par test
+
+## Routine continue (sans echeance fixe)
+
+Rituels recommandes:
+- Hebdo: revue des prompts qui ont bien fonctionne.
+- Mensuel: mise a jour du present guide et du playbook.
+- A chaque incident: ajouter un anti-pattern dans le playbook.
+
+## Check-list de validation
+
+- Le changement indique son impact architecture.
+- Le choix de l'agent est justifie.
+- La preuve test est incluse.
+- Les risques residuels sont explicitement listes.

src/PostIt/Directory.Packages.props

@@ -16,6 +16,8 @@
         <PackageVersion Include="Avalonia.Headless" Version="$(AvaloniaVersionBase)" />
         <PackageVersion Include="Avalonia.Headless.Xunit" Version="$(AvaloniaVersionBase)" />
         <PackageVersion Include="Avalonia.Fonts.Inter" Version="$(AvaloniaVersionBase)" />
+        <PackageVersion Include="Mapsui" Version="5.1.0" />
+        <PackageVersion Include="Mapsui.Avalonia12" Version="5.1.0" />
 
         <PackageVersion Include="Material.Avalonia" Version="3.19.0" />
         <PackageVersion Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.3" />

src/PostIt/PostIt.Android/Application.cs

@@ -1,4 +1,5 @@
 using Android.App;
+using Android;
 using Android.Runtime;
 using Avalonia;
 using Avalonia.Android;
@@ -9,6 +10,9 @@ using Avalonia.Controls;
 using Avalonia.Styling;
 using Yavsc.Api.Client;
 
+[assembly: UsesPermission(Manifest.Permission.AccessFineLocation)]
+[assembly: UsesPermission(Manifest.Permission.AccessCoarseLocation)]
+
 namespace PostIt.Android
 {
     [Application]

src/PostIt/PostIt.Android/MainActivity.cs

@@ -57,6 +57,17 @@ public class MainActivity : AvaloniaMainActivity
 
     }
 
+    public override void OnRequestPermissionsResult(int requestCode, string[]? permissions, Permission[]? grantResults)
+    {
+        if (PostIt.Android.Services.AndroidCurrentLocationProvider
+            .HandlePermissionResult(requestCode, grantResults))
+        {
+            return;
+        }
+
+        base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
+    }
+
     internal static class AndroidOidcCallbackSink
     {
         private static System.Threading.Tasks.TaskCompletionSource<string>? _pending;

src/PostIt/PostIt.Android/PlatformBootstrap.cs

@@ -14,11 +14,12 @@ internal static class PlatformBootstrap
 {
     internal static void InitPlatform()
     {
-
         Platform.CreateBrowser = () =>
         {
             var activity = MainActivity.Current;
             return activity is null ? null : new AndroidSystemBrowser(activity);
         };
+
+        Platform.TryGetCurrentLocationAsync = AndroidCurrentLocationProvider.TryGetCurrentLocationAsync;
     }
 }

src/PostIt/PostIt.Android/Services/AndroidCurrentLocationProvider.cs

@@ -0,0 +1,130 @@
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Android;
+using Android.App;
+using Android.Content.PM;
+using Android.Locations;
+using AndroidX.Core.App;
+using AndroidX.Core.Content;
+using PostIt.Services;
+
+namespace PostIt.Android.Services;
+
+internal static class AndroidCurrentLocationProvider
+{
+    public static async Task<CurrentLocationResult> TryGetCurrentLocationAsync(CancellationToken cancellationToken)
+    {
+        var activity = MainActivity.Current;
+        if (activity is null)
+        {
+            return CurrentLocationResult.Unavailable("L'activité Android n'est pas encore prête.");
+        }
+
+        var permissionGranted = await LocationPermissionBroker.EnsureGrantedAsync(activity, cancellationToken).ConfigureAwait(false);
+        if (!permissionGranted)
+        {
+            return CurrentLocationResult.PermissionDenied();
+        }
+
+        var locationManager = activity.GetSystemService(global::Android.Content.Context.LocationService) as LocationManager;
+        if (locationManager is null)
+        {
+            return CurrentLocationResult.Unavailable("Le service de localisation Android est indisponible.");
+        }
+
+        var location = locationManager.GetProviders(enabledOnly: true)?
+            .Select(provider => locationManager.GetLastKnownLocation(provider))
+            .Where(candidate => candidate is not null)
+            .OrderByDescending(candidate => candidate!.Time)
+            .ThenBy(candidate => candidate!.Accuracy)
+            .FirstOrDefault();
+
+        if (location is null)
+        {
+            return CurrentLocationResult.Unavailable("Aucune position n'est disponible. Activez la localisation du système puis réessayez.");
+        }
+
+        return CurrentLocationResult.Success(location.Latitude, location.Longitude);
+    }
+
+    public static bool HandlePermissionResult(int requestCode, Permission[]? grantResults)
+        => LocationPermissionBroker.HandleResult(requestCode, grantResults);
+
+    private static class LocationPermissionBroker
+    {
+        private const int RequestCode = 4042;
+        private static readonly string[] RequestedPermissions =
+        {
+            Manifest.Permission.AccessFineLocation,
+            Manifest.Permission.AccessCoarseLocation,
+        };
+
+        private static readonly object SyncRoot = new();
+        private static TaskCompletionSource<bool>? _pendingRequest;
+
+        public static Task<bool> EnsureGrantedAsync(Activity activity, CancellationToken cancellationToken)
+        {
+            if (HasLocationPermission(activity))
+            {
+                return Task.FromResult(true);
+            }
+
+            lock (SyncRoot)
+            {
+                if (_pendingRequest is null)
+                {
+                    _pendingRequest = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
+                    ActivityCompat.RequestPermissions(activity, RequestedPermissions, RequestCode);
+                }
+
+                if (!cancellationToken.CanBeCanceled)
+                {
+                    return _pendingRequest.Task;
+                }
+
+                return WaitAsync(_pendingRequest.Task, cancellationToken);
+            }
+        }
+
+        public static bool HandleResult(int requestCode, Permission[]? grantResults)
+        {
+            if (requestCode != RequestCode)
+            {
+                return false;
+            }
+
+            var granted = grantResults is { Length: > 0 } && grantResults.All(result => result == Permission.Granted);
+            TaskCompletionSource<bool>? pendingRequest;
+            lock (SyncRoot)
+            {
+                pendingRequest = _pendingRequest;
+                _pendingRequest = null;
+            }
+
+            pendingRequest?.TrySetResult(granted);
+            return true;
+        }
+
+        private static bool HasLocationPermission(Activity activity)
+        {
+            return ContextCompat.CheckSelfPermission(activity, Manifest.Permission.AccessFineLocation) == Permission.Granted
+                || ContextCompat.CheckSelfPermission(activity, Manifest.Permission.AccessCoarseLocation) == Permission.Granted;
+        }
+
+        private static async Task<bool> WaitAsync(Task<bool> task, CancellationToken cancellationToken)
+        {
+            using var registration = cancellationToken.Register(() =>
+            {
+                lock (SyncRoot)
+                {
+                    _pendingRequest?.TrySetCanceled(cancellationToken);
+                    _pendingRequest = null;
+                }
+            });
+
+            return await task.ConfigureAwait(false);
+        }
+    }
+}

src/PostIt/PostIt.Tests/ActivitiesPageViewModelTests.cs

@@ -7,6 +7,20 @@ namespace PostIt.Tests;
 
 public class ActivitiesPageViewModelTests
 {
+    [Fact]
+    public void ActivityApiClient_uses_avatar_authority_when_provided()
+    {
+        var api = new StubActivityApi();
+        var client = new ActivityApiClient(
+            api,
+            "https://api.pschneider.fr/api/v1/",
+            "https://yavsc.pschneider.fr/");
+
+        var url = client.BuildAvatarXsUrl("paul");
+
+        Assert.Equal("https://yavsc.pschneider.fr/avatars/paul.xs.png", url);
+    }
+
     [Fact]
     public async Task ActivityApiClient_uses_business_absolute_paths()
     {
@@ -25,6 +39,22 @@ public class ActivitiesPageViewModelTests
         Assert.Equal("https://business.example/api/v1/billing/Rdv", api.Paths[3]);
     }
 
+    [Fact]
+    public async Task ActivityApiClient_uses_updated_business_base_without_restart()
+    {
+        var api = new StubActivityApi();
+        var baseUrl = "https://business-a.example/api/v1/";
+        var client = new ActivityApiClient(api, () => baseUrl);
+
+        await client.GetCatalogAsync(ct: TestContext.Current.CancellationToken);
+
+        baseUrl = "https://business-b.example/api/v1/";
+        await client.GetUsersAsync("brush", TestContext.Current.CancellationToken);
+
+        Assert.Equal("https://business-a.example/api/v1/activity/catalog", api.Paths[0]);
+        Assert.Equal("https://business-b.example/api/v1/activity/brush/users", api.Paths[1]);
+    }
+
     [Fact]
     public async Task RefreshAsync_loads_first_activity_then_specialization_performers()
     {
@@ -40,6 +70,7 @@ public class ActivitiesPageViewModelTests
         Assert.Equal("brush", vm.CurrentActivity?.Code);
         Assert.Single(vm.Performers);
         Assert.Equal("Alice", vm.Performers[0].UserName);
+        Assert.Equal("https://business.example/avatars/Alice.xs.png", vm.Performers[0].AvatarXsUrl);
         Assert.True(vm.Performers[0].HasPerformerProfile);
         Assert.True(vm.Performers[0].IsPerformerActive);
         Assert.Equal("Actif", vm.Performers[0].PerformerStatusBadgeLabel);
@@ -50,6 +81,7 @@ public class ActivitiesPageViewModelTests
         Assert.Equal("brush-pro", vm.CurrentActivity?.Code);
         Assert.Single(vm.Performers);
         Assert.Equal("Bob", vm.Performers[0].UserName);
+        Assert.Equal("https://business.example/avatars/Bob.xs.png", vm.Performers[0].AvatarXsUrl);
         Assert.True(vm.Performers[0].HasPerformerProfile);
         Assert.False(vm.Performers[0].IsPerformerActive);
         Assert.Equal("Inactif", vm.Performers[0].PerformerStatusBadgeLabel);
@@ -72,9 +104,9 @@ public class ActivitiesPageViewModelTests
         {
             Paths.Add(path);
 
-            if (typeof(T) == typeof(List<ActivityBrowseItemDto>))
+            if (typeof(T) == typeof(List<ActivityInfo>))
             {
-                var activities = new List<ActivityBrowseItemDto>
+                var activities = new List<ActivityInfo>
                 {
                     new()
                     {
@@ -82,11 +114,11 @@ public class ActivitiesPageViewModelTests
                         Name = "Brush",
                         Description = "Coiffure à domicile",
                         PerformerCount = 1,
-                        Forms = new List<CommandFormSummaryDto>
+                        Forms = new List<CommandFormSummary>
                         {
                             new() { Id = 1, ActionName = "Rdv", Title = "Rendez-vous" }
                         },
-                        Children = new List<ActivityBrowseItemDto>
+                        Children = new List<ActivityInfo>
                         {
                             new()
                             {
@@ -95,7 +127,7 @@ public class ActivitiesPageViewModelTests
                                 Description = "Spécialisation premium",
                                 ParentCode = "brush",
                                 PerformerCount = 1,
-                                Forms = new List<CommandFormSummaryDto>
+                                Forms = new List<CommandFormSummary>
                                 {
                                     new() { Id = 2, ActionName = "Rdv", Title = "Rendez-vous premium" }
                                 }
@@ -106,14 +138,14 @@ public class ActivitiesPageViewModelTests
                 return Task.FromResult((T)(object)activities);
             }
 
-            if (typeof(T) == typeof(List<ActivityPerformerDto>))
+            if (typeof(T) == typeof(List<PerformerActivity>))
             {
                 var performers = path.EndsWith("brush-pro/users", StringComparison.Ordinal)
-                    ? new List<ActivityPerformerDto>
+                    ? new List<PerformerActivity>
                     {
                         new() { PerformerId = "pro-2", HasPerformerProfile = true, Active = false, UserName = "Bob", ActivityCode = "brush-pro", ActivityName = "Brush Pro", ExtraActivityCount = 2 }
                     }
-                    : new List<ActivityPerformerDto>
+                    : new List<PerformerActivity>
                     {
                         new() { PerformerId = "pro-1", HasPerformerProfile = true, Active = true, UserName = "Alice", ActivityCode = "brush", ActivityName = "Brush", ExtraActivityCount = 0 }
                     };

src/PostIt/PostIt.Tests/BearerScopeTests.cs

@@ -67,7 +67,7 @@ public class BearerScopeTests
                 Scopes = userScopes,
                 RedirectUri = "postit://callback",
             },
-            BusinessApiUrl = "https://example.invalid/api/v1/",
+            ApiUrl = "https://example.invalid/api/v1/",
         };
 
         var tokensPath = Path.Combine(
@@ -266,7 +266,7 @@ public class BearerScopeTests
             // private HttpClient is independent, so we resolve the
             // absolute URI ourselves from Settings.BusinessApiUrl —
             // the same URL BlogApiClient would have set as BaseAddress.
-            var absolute = new Uri(new Uri(Settings.BusinessApiUrl), path);
+            var absolute = new Uri(new Uri(Settings.ApiUrl), path);
             using var req = new HttpRequestMessage(method, absolute);
             req.Headers.Authorization =
                 new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _accessToken);

src/PostIt/PostIt.Tests/BillingCommandPageViewModelTests.cs

@@ -1,6 +1,8 @@
-using System.Net.Http;
 using System.Text.Json;
+using PostIt.Helpers;
+using PostIt.Services;
 using PostIt.ViewModels;
+using PostIt.ViewModels.Commands;
 using Yavsc;
 using Yavsc.Abstract.Workflow;
 using Yavsc.Api.Client;
@@ -15,19 +17,19 @@ public class BillingCommandPageViewModelTests
     {
         var api = new RecordingApi();
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
-        var vm = new BillingCommandPageViewModel(
+        var vm =
-            new ActivityBrowseItemDto { Code = "dev", Name = "Développement" },
+          new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+          .CreateCommandPageViewModel(
+            new ActivityInfo { Code = "dev", Name = "Développement" },
             new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
-            new CommandFormSummaryDto { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" },
+            client) as RdvViewModel;
-            client)
+
-        {
+            vm!.EventDate = DateTime.Parse("2026-09-02 14:30");
-            EventDateText = "2026-09-02 14:30",
+        vm!.Reason = "Point de cadrage";
-            Reason = "Point de cadrage",
+        vm!.Address = "1 rue du Test";
-            Address = "1 rue du Test",
+        vm!.Latitude = 48.8566;
-            LatitudeText = "48.8566",
+        vm!.Longitude = 2.3522;
-            LongitudeText = "2.3522",
+        vm!.Consent = true;
-            Consent = true,
-        };
 
         await vm.SubmitCommand.ExecuteAsync(null);
 
@@ -46,16 +48,154 @@ public class BillingCommandPageViewModelTests
     {
         var api = new RecordingApi();
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
-        var vm = new BillingCommandPageViewModel(
+
-            new ActivityBrowseItemDto { Code = "book", Name = "Book" },
+        var vm =
+         new CommandFormSummary { Id = 13, ActionName = "Book", Title = "Réservation" }
+         .CreateCommandPageViewModel(
+            new ActivityInfo { Code = "book", Name = "Book" },
             new ActivityUserDisplayItem { PerformerId = "perf-2", UserName = "Bob" },
-            new CommandFormSummaryDto { Id = 13, ActionName = "Book", Title = "Réservation" },
             client);
 
+        Assert.Null(vm);
+    }
+
+    [Fact]
+    public async Task SubmitAsync_allows_missing_coordinates_and_omits_them_from_payload()
+    {
+        var api = new RecordingApi();
+        var client = new BillingApiClient(api, "https://business.example/api/v1/");
+        var vm =
+
+        new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+        .CreateCommandPageViewModel(
+            new ActivityInfo { Code = "dev", Name = "Développement" },
+            new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+            client) as RdvViewModel;
+        vm!.EventDate = DateTime.Parse("2026-09-02 14:30");
+        vm!.Reason = "Point de cadrage";
+        vm!.Address = "1 rue du Test";
+        vm!.Latitude = null;
+        vm!.Longitude = null;
+        vm!.Consent = true;
+
         await vm.SubmitCommand.ExecuteAsync(null);
 
-        Assert.Null(api.LastPath);
+        using var json = JsonDocument.Parse(JsonSerializer.Serialize(api.LastBody));
-        Assert.Contains("n'est pas encore pris en charge", vm.StatusMessage, StringComparison.OrdinalIgnoreCase);
+        var location = json.RootElement.GetProperty("Location");
+        Assert.Equal("1 rue du Test", location.GetProperty("Address").GetString());
+        Assert.False(location.TryGetProperty("Latitude", out _));
+        Assert.False(location.TryGetProperty("Longitude", out _));
+    }
+
+    [Fact]
+    public async Task UseCurrentLocationAsync_prefills_coordinates_from_platform_provider()
+    {
+        var original = Platform.TryGetCurrentLocationAsync;
+        try
+        {
+            Platform.TryGetCurrentLocationAsync = _ => Task.FromResult(CurrentLocationResult.Success(48.8566, 2.3522));
+
+            var api = new RecordingApi();
+            var client = new BillingApiClient(api, "https://business.example/api/v1/");
+            var vm =
+             new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+             .CreateCommandPageViewModel(
+                new ActivityInfo { Code = "dev", Name = "Développement" },
+                new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+                client) as RdvViewModel;
+
+            await vm!.UseCurrentLocationCommand.ExecuteAsync(null);
+
+            Assert.Equal(48.8566, vm!.Latitude);
+            Assert.Equal(2.3522, vm!.Longitude);
+        }
+        finally
+        {
+            Platform.TryGetCurrentLocationAsync = original;
+        }
+    }
+
+    [Fact]
+    public void ApplyLocationFromMap_sets_coordinates_and_updates_status()
+    {
+        var api = new RecordingApi();
+        var client = new BillingApiClient(api, "https://business.example/api/v1/");
+        var vm =
+            new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+            .CreateCommandPageViewModel(
+                new ActivityInfo { Code = "dev", Name = "Développement" },
+                new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+                client) as RdvViewModel;
+
+        vm!.Address = string.Empty;
+        vm.ApplyLocationFromMap(48.85661234, 2.35224567);
+
+        Assert.Equal(48.856612, vm.Latitude);
+        Assert.Equal(2.352246, vm.Longitude);
+        Assert.Contains("Position sélectionnée", vm.StatusMessage, StringComparison.OrdinalIgnoreCase);
+    }
+
+    [Fact]
+    public void EventDateSelection_round_trips_with_EventDate_for_DatePicker_binding()
+    {
+        var api = new RecordingApi();
+        var client = new BillingApiClient(api, "https://business.example/api/v1/");
+        var vm =
+            new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+            .CreateCommandPageViewModel(
+                new ActivityInfo { Code = "dev", Name = "Développement" },
+                new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+                client) as RdvViewModel;
+
+        var selected = new DateTimeOffset(2026, 9, 7, 14, 30, 0, TimeSpan.FromHours(2));
+        vm!.EventDateSelection = selected;
+
+        Assert.Equal(selected.LocalDateTime, vm.EventDate);
+        Assert.Equal(vm.EventDate, vm.EventDateSelection!.Value.LocalDateTime);
+    }
+
+    [Fact]
+    public void ApplyResolvedAddress_populates_empty_address_directly()
+    {
+        var api = new RecordingApi();
+        var client = new BillingApiClient(api, "https://business.example/api/v1/");
+        var vm =
+            new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+            .CreateCommandPageViewModel(
+                new ActivityInfo { Code = "dev", Name = "Développement" },
+                new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+                client) as RdvViewModel;
+
+        vm!.Address = string.Empty;
+        vm.ApplyResolvedAddress("10 rue de Rivoli, 75001 Paris");
+
+        Assert.Equal("10 rue de Rivoli, 75001 Paris", vm.Address);
+        Assert.False(vm.HasSuggestedAddress);
+    }
+
+    [Fact]
+    public void ApplyResolvedAddress_preserves_manual_address_and_exposes_suggestion()
+    {
+        var api = new RecordingApi();
+        var client = new BillingApiClient(api, "https://business.example/api/v1/");
+        var vm =
+            new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" }
+            .CreateCommandPageViewModel(
+                new ActivityInfo { Code = "dev", Name = "Développement" },
+                new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+                client) as RdvViewModel;
+
+        vm!.Address = "Saisie manuelle";
+        vm.ApplyResolvedAddress("10 rue de Rivoli, 75001 Paris");
+
+        Assert.Equal("Saisie manuelle", vm.Address);
+        Assert.True(vm.HasSuggestedAddress);
+        Assert.Equal("10 rue de Rivoli, 75001 Paris", vm.SuggestedAddress);
+
+        vm.ApplySuggestedAddressCommand.Execute(null);
+
+        Assert.Equal("10 rue de Rivoli, 75001 Paris", vm.Address);
+        Assert.False(vm.HasSuggestedAddress);
     }
 
     [Fact]
@@ -70,19 +210,18 @@ public class BillingCommandPageViewModelTests
             }
         };
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
-        var vm = new BillingCommandPageViewModel(
+        var vm =
-            new ActivityBrowseItemDto { Code = "brush", Name = "Brush" },
+        new CommandFormSummary { Id = 13, ActionName = "Brush", Title = "Coupe" }
+        .CreateCommandPageViewModel(
+            new ActivityInfo { Code = "brush", Name = "Brush" },
             new ActivityUserDisplayItem { PerformerId = "perf-2", UserName = "Bob" },
-            new CommandFormSummaryDto { Id = 13, ActionName = "Brush", Title = "Coupe" },
+            client) as BrushViewModel;
-            client)
+        vm!.EventDate = DateTime.Parse("2026-09-02 14:30");
-        {
+        vm!.Address = "1 rue du Test";
-            EventDateText = "2026-09-02 14:30",
+        vm!.Latitude = 48.8566;
-            Address = "1 rue du Test",
+        vm!.Longitude = 2.3522;
-            LatitudeText = "48.8566",
+        vm!.Consent = true;
-            LongitudeText = "2.3522",
+        vm!.AdditionalInfo = "Prévoir shampoing";
-            Consent = true,
-            AdditionalInfo = "Prévoir shampoing",
-        };
 
         await vm.InitializeAsync();
         vm.SelectedPrestation = vm.AvailablePrestations[1];
@@ -106,23 +245,22 @@ public class BillingCommandPageViewModelTests
             }
         };
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
-        var vm = new BillingCommandPageViewModel(
+        var vm =
-            new ActivityBrowseItemDto { Code = "mbrush", Name = "MBrush" },
+        new CommandFormSummary { Id = 14, ActionName = "MBrush", Title = "Coupe groupée" }
+        .CreateCommandPageViewModel(
+            new ActivityInfo { Code = "mbrush", Name = "MBrush" },
             new ActivityUserDisplayItem { PerformerId = "perf-3", UserName = "Cara" },
-            new CommandFormSummaryDto { Id = 14, ActionName = "MBrush", Title = "Coupe groupée" },
+            client) as MBrushViewModel;
-            client)
+        vm!.EventDate = DateTime.Parse("2026-09-03 10:00");
-        {
+        vm!.Address = "2 rue du Test";
-            EventDateText = "2026-09-03 10:00",
+        vm!.Latitude = 48.8567;
-            Address = "2 rue du Test",
+        vm!.Longitude = 2.3523;
-            LatitudeText = "48.8567",
+        vm!.Consent = true;
-            LongitudeText = "2.3523",
-            Consent = true,
-        };
 
         await vm.InitializeAsync();
-        vm.MultiPrestations[0].IsSelected = true;
+        vm!.MultiPrestations[0].IsSelected = true;
-        vm.MultiPrestations[1].IsSelected = true;
+        vm!.MultiPrestations[1].IsSelected = true;
-        await vm.SubmitCommand.ExecuteAsync(null);
+        await vm!.SubmitCommand.ExecuteAsync(null);
 
         Assert.Equal("https://business.example/api/v1/billing/MBrush", api.LastPath);
         using var json = JsonDocument.Parse(JsonSerializer.Serialize(api.LastBody));
@@ -144,13 +282,13 @@ public class BillingCommandPageViewModelTests
             }
         };
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
-        var vm = new BillingCommandPageViewModel(
+        var vm =
-            new ActivityBrowseItemDto { Code = "brush", Name = "Brush" },
+           new CommandFormSummary { Id = 13, ActionName = "Brush", Title = "Coupe" }
+         .CreateCommandPageViewModel(
+            new ActivityInfo { Code = "brush", Name = "Brush" },
             new ActivityUserDisplayItem { PerformerId = "perf-2", UserName = "Bob" },
-            new CommandFormSummaryDto { Id = 13, ActionName = "Brush", Title = "Coupe" },
+            client) as BrushViewModel;
-            client);
+        await vm!.InitializeAsync(new BillingQueryDetailsDto
-
-        await vm.InitializeAsync(new BillingQueryDetailsDto
         {
             Id = 77,
             BillingCode = "Brush",
@@ -170,9 +308,9 @@ public class BillingCommandPageViewModelTests
             }
         });
 
-        vm.SelectedPrestation = vm.AvailablePrestations[1];
+        vm!.SelectedPrestation = vm!.AvailablePrestations[1];
-        vm.AdditionalInfo = "Note mise à jour";
+        vm!.AdditionalInfo = "Note mise à jour";
-        await vm.SubmitCommand.ExecuteAsync(null);
+        await vm!.SubmitCommand.ExecuteAsync(null);
 
         Assert.Equal(HttpMethod.Put, api.LastMethod);
         Assert.Equal("https://business.example/api/v1/billing/Brush/77", api.LastPath);

src/PostIt/PostIt.Tests/BillingQueriesPageViewModelTests.cs

@@ -14,9 +14,9 @@ public class BillingQueriesPageViewModelTests
         var api = new StubBillingApi();
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
         var vm = new BillingQueriesPageViewModel(
-            new ActivityBrowseItemDto { Code = "dev", Name = "Développement" },
+            new ActivityInfo { Code = "dev", Name = "Développement" },
             new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
-            new CommandFormSummaryDto { Id = 1, ActionName = "Rdv", Title = "Rendez-vous" },
+            new CommandFormSummary { Id = 1, ActionName = "Rdv", Title = "Rendez-vous" },
             client);
 
         await vm.InitializeAsync();
@@ -33,9 +33,9 @@ public class BillingQueriesPageViewModelTests
         var api = new StubBillingApi();
         var client = new BillingApiClient(api, "https://business.example/api/v1/");
         var vm = new BillingQueriesPageViewModel(
-            new ActivityBrowseItemDto { Code = "dev", Name = "Développement" },
+            new ActivityInfo { Code = "dev", Name = "Développement" },
             new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
-            new CommandFormSummaryDto { Id = 1, ActionName = "Rdv", Title = "Rendez-vous" },
+            new CommandFormSummary { Id = 1, ActionName = "Rdv", Title = "Rendez-vous" },
             client,
             isReadOnly: true,
             ongoingOnly: true);
@@ -45,10 +45,8 @@ public class BillingQueriesPageViewModelTests
         Assert.Equal(2, vm.Queries.Count);
         Assert.All(vm.Queries, q => Assert.DoesNotContain("Rejected", q.StatusLabel, StringComparison.OrdinalIgnoreCase));
         Assert.Contains("lecture seule", vm.StatusMessage, StringComparison.OrdinalIgnoreCase);
-        Assert.False(vm.CanOpenDetails);
 
-        vm.SelectedQuery = vm.Queries[0];
+        Assert.True(vm.Queries.Count > 0);
-        Assert.False(vm.OpenSelectedQueryCommand.CanExecute(null));
     }
 
     private sealed class StubBillingApi : IYavscApiClient

src/PostIt/PostIt.Tests/NominatimReverseGeocodingServiceTests.cs

@@ -0,0 +1,72 @@
+using System.Net;
+using System.Text;
+using PostIt.Services;
+
+namespace PostIt.Tests;
+
+public class NominatimReverseGeocodingServiceTests
+{
+    [Fact]
+    public async Task TryResolveAddressAsync_formats_compact_street_address_from_nominatim_payload()
+    {
+        var handler = new StubHandler("""
+            {
+              "display_name": "6, Place de l'Hôtel-de-Ville - Esplanade de la Libération, Paris, 75004, France",
+              "address": {
+                "house_number": "6",
+                "road": "Place de l'Hôtel-de-Ville - Esplanade de la Libération",
+                "postcode": "75004",
+                "city": "Paris"
+              }
+            }
+            """);
+
+        var service = new NominatimReverseGeocodingService(new HttpClient(handler)
+        {
+            BaseAddress = new Uri("https://nominatim.openstreetmap.org/")
+        });
+
+        var result = await service.TryResolveAddressAsync(48.8566, 2.3522);
+
+        Assert.Equal("6, Place de l'Hôtel-de-Ville - Esplanade de la Libération, 75004, Paris", result);
+        Assert.NotNull(handler.LastRequest);
+        Assert.Contains("reverse?format=jsonv2", handler.LastRequest!.RequestUri!.ToString(), StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task TryResolveAddressAsync_returns_null_on_unsuccessful_response()
+    {
+        var handler = new StubHandler("{}", HttpStatusCode.TooManyRequests);
+        var service = new NominatimReverseGeocodingService(new HttpClient(handler)
+        {
+            BaseAddress = new Uri("https://nominatim.openstreetmap.org/")
+        });
+
+        var result = await service.TryResolveAddressAsync(48.8566, 2.3522);
+
+        Assert.Null(result);
+    }
+
+    private sealed class StubHandler : HttpMessageHandler
+    {
+        private readonly string _payload;
+        private readonly HttpStatusCode _statusCode;
+
+        public HttpRequestMessage? LastRequest { get; private set; }
+
+        public StubHandler(string payload, HttpStatusCode statusCode = HttpStatusCode.OK)
+        {
+            _payload = payload;
+            _statusCode = statusCode;
+        }
+
+        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+        {
+            LastRequest = request;
+            return Task.FromResult(new HttpResponseMessage(_statusCode)
+            {
+                Content = new StringContent(_payload, Encoding.UTF8, "application/json")
+            });
+        }
+    }
+}

src/PostIt/PostIt.Tests/PostAclDialogTests.cs

@@ -95,7 +95,7 @@ public class PostAclDialogTests
             HttpMethod method, string path, object? body = null,
             CancellationToken ct = default)
         {
-            var absolute = new Uri(new Uri(Settings.BusinessApiUrl), path);
+            var absolute = new Uri(new Uri(Settings.ApiUrl), path);
             using var req = new HttpRequestMessage(method, absolute);
             using var resp = _http.SendAsync(req, ct).GetAwaiter().GetResult();
             resp.EnsureSuccessStatusCode();
@@ -123,8 +123,8 @@ public class PostAclDialogTests
         var handler = new CountingHttpHandler();
         var settings = new Settings();
         var api = new TestableYavscApiClient(settings, new TokenStore(System.IO.Path.GetTempFileName()), handler);
-        var aclClient = new BlogAclApiClient(api, settings.BusinessApiUrl);
+        var aclClient = new BlogAclApiClient(api, settings.ApiUrl);
-        var circleClient = new CircleApiClient(api, settings.BusinessApiUrl);
+        var circleClient = new CircleApiClient(api, settings.ApiUrl);
 
         var services = new ServiceCollection();
         services.AddSingleton(settings);

src/PostIt/PostIt.Tests/RdvPageHeadlessTests.cs

@@ -0,0 +1,79 @@
+using Avalonia.Controls;
+using Avalonia.Headless.XUnit;
+using PostIt.ViewModels;
+using PostIt.ViewModels.Commands;
+using PostIt.Views.Commands;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+
+namespace PostIt.Tests;
+
+public class RdvPageHeadlessTests
+{
+    [AvaloniaFact]
+    public void Suggested_address_panel_is_hidden_by_default()
+    {
+        var page = CreatePage(out _);
+
+        var panel = page.FindControl<Grid>("SuggestedAddressPanel");
+        var progress = page.FindControl<ProgressBar>("SuggestedAddressProgress");
+
+        Assert.NotNull(panel);
+        Assert.NotNull(progress);
+        Assert.False(panel!.IsVisible);
+        Assert.False(progress!.IsVisible);
+    }
+
+    [AvaloniaFact]
+    public async Task Suggested_address_panel_and_spinner_follow_viewmodel_state()
+    {
+        var page = CreatePage(out var vm);
+        var panel = page.FindControl<Grid>("SuggestedAddressPanel")!;
+        var progress = page.FindControl<ProgressBar>("SuggestedAddressProgress")!;
+        var applyButton = page.FindControl<Button>("ApplySuggestedAddressButton")!;
+
+        vm.Address = "Saisie manuelle";
+        vm.NotifyReverseGeocodingStarted();
+        await Task.Delay(50);
+
+        Assert.True(panel.IsVisible);
+        Assert.True(progress.IsVisible);
+        Assert.False(applyButton.IsVisible);
+
+        vm.ApplyResolvedAddress("10 rue de Rivoli, 75001 Paris");
+        await Task.Delay(50);
+
+        Assert.True(panel.IsVisible);
+        Assert.False(progress.IsVisible);
+        Assert.True(applyButton.IsVisible);
+    }
+
+    private static RdvPage CreatePage(out RdvViewModel vm)
+    {
+        vm = new RdvViewModel(
+            new ActivityInfo { Code = "dev", Name = "Développement" },
+            new ActivityUserDisplayItem { PerformerId = "perf-1", UserName = "Alice" },
+            new CommandFormSummary { Id = 12, ActionName = "Rdv", Title = "Rendez-vous" },
+            new BillingApiClient(new RecordingApi(), "https://business.example/api/v1/"));
+
+        var page = new RdvPage { DataContext = vm };
+        var nav = new NavigationPage();
+        _ = nav.PushAsync(page);
+        var window = new Window { Content = nav };
+        window.Show();
+        return page;
+    }
+
+    private sealed class RecordingApi : IYavscApiClient
+    {
+        public HttpClient Http { get; } = new();
+
+        public Task<T> CallAsync<T>(HttpMethod method, string path, object? body = null, CancellationToken ct = default)
+            => Task.FromResult(default(T)!);
+
+        public Task CallAsync(HttpMethod method, string path, object? body = null, CancellationToken ct = default)
+            => Task.CompletedTask;
+
+        public ValueTask DisposeAsync() => ValueTask.CompletedTask;
+    }
+}

src/PostIt/PostIt.Tests/RdvPageTests.cs

@@ -0,0 +1,30 @@
+using PostIt.Views.Commands;
+
+namespace PostIt.Tests;
+
+public class RdvPageTests
+{
+    [Fact]
+    public void AreCoordinatesClose_returns_true_for_nearby_points_within_cache_tolerance()
+    {
+        var result = RdvPage.AreCoordinatesClose(
+            48.8566,
+            2.3522,
+            48.85665,
+            2.35225);
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void AreCoordinatesClose_returns_false_for_points_outside_cache_tolerance()
+    {
+        var result = RdvPage.AreCoordinatesClose(
+            48.8566,
+            2.3522,
+            48.85685,
+            2.3522);
+
+        Assert.False(result);
+    }
+}

src/PostIt/PostIt.Tests/SettingsLoadTests.cs

@@ -89,7 +89,7 @@ public class SettingsLoadTests
                         settings.Authentication.RedirectUri =
                             global::AuthenticationSettings.DesktopRedirectUri;
 
-                        settings.BusinessApiUrl = flip
+                        settings.ApiUrl = flip
                             ? "https://a.example.test/api/v1/"
                             : "https://b.example.test/api/v1/";
 
@@ -173,4 +173,51 @@ public class SettingsLoadTests
         Assert.NotNull(roundTrip);
         Assert.Equal("bonjour", roundTrip.SearchText);
     }
+
+        /// <summary>
+        /// First-start regression guard: older settings payloads can
+        /// still contain <c>ActionStatus</c> from a previous write. This
+        /// runtime-only UI state must not be persisted anymore and must
+        /// not break deserialization when present.
+        /// </summary>
+        [Fact]
+        public void ActionStatus_is_not_persisted_and_legacy_payload_with_it_still_deserializes()
+        {
+                var settings = new PostIt.ViewModels.Settings
+                {
+                        Authentication = new AuthenticationSettings
+                        {
+                                Authority = "https://example.test/",
+                                ClientId = "postit-tests",
+                                Scopes = new[] { "openid" }
+                        }
+                };
+
+                var serialized = JsonSerializer.Serialize(settings);
+                Assert.DoesNotContain("\"ActionStatus\"", serialized, StringComparison.Ordinal);
+
+                const string legacyPayload = """
+                        {
+                            "Authentication": {
+                                "Authority": "https://example.test/",
+                                "ClientId": "postit-tests",
+                                "Scopes": ["openid"],
+                                "RedirectUri": "postit://callback"
+                            },
+                            "DarkMode": false,
+                            "BlogsApiUrl": "https://blogs.example.test/api/v1/",
+                            "ApiUrl": "https://api.example.test/api/v1/",
+                            "SearchText": "hello",
+                            "ActionStatus": {
+                                "Message": "runtime only",
+                                "Severity": "Error"
+                            }
+                        }
+                        """;
+
+                var roundTrip = JsonSerializer.Deserialize<PostIt.ViewModels.Settings>(legacyPayload);
+
+                Assert.NotNull(roundTrip);
+                Assert.Equal("hello", roundTrip.SearchText);
+        }
 }

src/PostIt/PostIt.Tests/YavscApiClientTests.cs

@@ -58,7 +58,7 @@ public class YavscApiClientTests
             // calls CallAsync("posts", ...) directly (bypassing
             // BlogApiClient, which is the only thing that would set
             // it in production). Mirror prod here.
-            reloaded.Http.BaseAddress = new Uri(settings.BusinessApiUrl);
+            reloaded.Http.BaseAddress = new Uri(settings.ApiUrl);
 
             var posts = await reloaded.CallAsync<List<StubApiServer.Post>>(
                 HttpMethod.Get, "posts", TestContext.Current.CancellationToken);
@@ -118,7 +118,7 @@ public class YavscApiClientTests
                 RedirectUri = "postit://callback",
                 Scopes = new[] { "openid" },
             },
-            BusinessApiUrl = "https://127.0.0.1:5003/api/v1",
+            ApiUrl = "https://127.0.0.1:5003/api/v1",
         };
         var client = new YavscApiClient(settings, new TokenStore(Path.Combine(
             Path.GetTempPath(), $"postit-tests-noop-{Guid.NewGuid():N}.json")));
@@ -162,7 +162,7 @@ public class YavscApiClientTests
             RedirectUri = authority.LoopbackRedirectUri,
             Scopes = new[] { "openid", "profile", "blog" }
         },
-        BusinessApiUrl = apiBaseUrl
+        ApiUrl = apiBaseUrl
     };
 
     private static async Task<YavscApiClient> LoginAndPersistAsync(
@@ -175,7 +175,7 @@ public class YavscApiClientTests
         // directly (bypassing BlogApiClient) rely on the same
         // BaseAddress the production chain sets in BlogApiClient's
         // ctor. Mirror that here so "posts" resolves to the stub.
-        client.Http.BaseAddress = new Uri(settings.BusinessApiUrl);
+        client.Http.BaseAddress = new Uri(settings.ApiUrl);
 
         // Force the API client to use the test browser by routing the
         // LoginInteractiveAsync call through a small wrapper.

src/PostIt/PostIt/App.axaml.cs

@@ -135,9 +135,6 @@ private void ConfigureRootView(MainView rootView)
         var homePage = provider.GetRequiredService<HomePageViewModel>();
         var app = (App)Current!;
         await app.PushPageAsync(homePage);
-        if (!refreshed) return;
-
-        await PushMainPageAsync().ConfigureAwait(true);
     }
 
     /// <summary>
@@ -148,7 +145,7 @@ private void ConfigureRootView(MainView rootView)
     /// (interactive login from the banner). Pulled out as a helper so
     /// the two callers can't drift apart.
     /// </summary>
-    public static async Task PushMainPageAsync()
+    public static async Task PushBlogsPageAsync()
     {
         var app = (App)Current!;
         var mainVm = app.ServiceProvider!.GetRequiredService<MainViewModel>();

src/PostIt/PostIt/Controls/StatusBar.axaml

@@ -0,0 +1,22 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:PostIt.ViewModels"
+             x:Class="PostIt.Controls.StatusBar"
+             x:DataType="vm:StatusNotice">
+    <Border Background="{Binding Background}"
+            BorderBrush="{Binding BorderBrush}"
+            BorderThickness="1"
+            CornerRadius="6"
+            Padding="8">
+        <StackPanel Orientation="Horizontal" Spacing="8">
+            <TextBlock Text="{Binding Glyph}"
+                       FontWeight="Bold"
+                       Foreground="{Binding Foreground}"
+                       VerticalAlignment="Top"/>
+            <TextBlock Text="{Binding Message}"
+                       Foreground="{Binding Foreground}"
+                       TextWrapping="Wrap"
+                       VerticalAlignment="Center"/>
+        </StackPanel>
+    </Border>
+</UserControl>

src/PostIt/PostIt/Controls/StatusBar.axaml.cs

@@ -0,0 +1,11 @@
+using Avalonia.Controls;
+
+namespace PostIt.Controls;
+
+public partial class StatusBar : UserControl
+{
+    public StatusBar()
+    {
+        InitializeComponent();
+    }
+}

src/PostIt/PostIt/Helpers/FormHelpers.cs

@@ -0,0 +1,50 @@
+using System;
+using PostIt.ViewModels;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+
+namespace PostIt.Helpers;
+
+public static class FormHelpers
+{
+    public static BillingCommandPageViewModel?
+    CreateCommandPageViewModel(
+        this CommandFormSummary form,
+        ActivityInfo activity,
+        ActivityUserDisplayItem performer,
+        BillingApiClient billingClient)
+    {
+
+        string namespacePrefix = typeof(PostIt.ViewModels.Commands.RdvViewModel).Namespace + ".";
+
+        string formVMName =   form.ActionName + "ViewModel";
+
+        string formOnActivityVMName =  activity.Code + formVMName + "ViewModel";
+
+        var vmType = Type.GetType(namespacePrefix +formOnActivityVMName);
+        if (vmType == null)
+        {
+            vmType = Type.GetType(namespacePrefix + formVMName);
+        }
+        if (vmType == null)
+        {
+            Console.Error.WriteLine(
+                $"! Cannot find type '{formOnActivityVMName}' or '{formVMName}'");
+            return null;
+        }
+        if (!typeof(BillingCommandPageViewModel).IsAssignableFrom(vmType))
+        {
+            Console.Error.WriteLine($"! The type '{formOnActivityVMName}' or '{formVMName}' is not a BillingCommandPageViewModel");
+            return null;
+        }
+
+        var vm = Activator.CreateInstance(vmType, activity, performer, form, billingClient);
+
+        if (vm == null)
+        {
+            throw new InvalidOperationException($"Cannot create instance of '{formOnActivityVMName}' or '{formVMName}'");
+        }
+
+        return vm as BillingCommandPageViewModel ?? throw new InvalidOperationException($"The type '{formOnActivityVMName}' or '{formVMName}' is not a BillingCommandPageViewModel");
+    }
+}

src/PostIt/PostIt/Helpers/ImageHelper.cs

@@ -0,0 +1,34 @@
+using System;
+using System.IO;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Avalonia.Media.Imaging;
+using Avalonia.Platform;
+
+namespace PostIt.Helpers;
+
+public static class ImageHelper
+{
+    private static readonly HttpClient HttpClient = new();
+
+    public static Bitmap LoadFromResource(Uri resourceUri)
+    {
+        return new Bitmap(AssetLoader.Open(resourceUri));
+    }
+
+    public static async Task<Bitmap?> LoadFromWeb(Uri url)
+    {
+        try
+        {
+            var response = await HttpClient.GetAsync(url).ConfigureAwait(false);
+            response.EnsureSuccessStatusCode();
+            var data = await response.Content.ReadAsByteArrayAsync().ConfigureAwait(false);
+            return new Bitmap(new MemoryStream(data));
+        }
+        catch (HttpRequestException ex)
+        {
+            Console.WriteLine($"An error occurred while downloading image '{url}': {ex.Message}");
+            return null;
+        }
+    }
+}

src/PostIt/PostIt/Helpers/ServiceCollectionHelpers.cs

@@ -3,6 +3,7 @@ using Microsoft.Extensions.DependencyInjection;
 using PostIt.Services;
 using PostIt.ViewModels;
 using PostIt.Views;
+using PostIt.Views.Commands;
 using Yavsc.Api.Client;
 
 namespace PostIt.Helpers;
@@ -23,9 +24,13 @@ public static class ServiceCollectionHelpers
         var circleClient = new CircleApiClient(api, settings.BlogsApiUrl);
         var blogAclClient = new BlogAclApiClient(api, settings.BlogsApiUrl);
         var userSearchClient = new UserSearchClient(api, settings.BlogsApiUrl);
-        var activityClient = new ActivityApiClient(api, settings.BusinessApiUrl);
+        var activityClient = new ActivityApiClient(
-        var billingClient = new BillingApiClient(api, settings.BusinessApiUrl);
+            api,
+            () => settings.ApiUrl,
+            () => settings.Authentication?.Authority);
+        var billingClient = new BillingApiClient(api, () => settings.ApiUrl);
         var userDirectory = new UserDirectory(userSearchClient);
+        var reverseGeocoding = new NominatimReverseGeocodingService();
 
         // Vues
         services.AddSingleton<MainView>();
@@ -49,8 +54,10 @@ public static class ServiceCollectionHelpers
         services.AddSingleton<CirclesPage>();
         services.AddSingleton<ActivitiesPage>();
         services.AddTransient<CommandFormsPage>();
-        services.AddTransient<BillingCommandPage>();
+        services.AddTransient<RdvPage>();
+        services.AddTransient<BrushPage>();
         services.AddTransient<BillingQueriesPage>();
+        services.AddTransient<BillingQueryDetailsPage>();
         // ViewModels
         services.AddSingleton(settings);
         services.AddSingleton<YavscApiClient>(api);
@@ -60,6 +67,7 @@ public static class ServiceCollectionHelpers
         services.AddSingleton(userSearchClient);
         services.AddSingleton(activityClient);
         services.AddSingleton(billingClient);
+        services.AddSingleton<IReverseGeocodingService>(reverseGeocoding);
         services.AddSingleton<IUserDirectory>(userDirectory);
         services.AddSingleton<HomePageViewModel>();
         services.AddSingleton<SignaturePageViewModel>();

src/PostIt/PostIt/PostIt.csproj

@@ -29,6 +29,8 @@
       <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
       <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="Mapsui" />
+    <PackageReference Include="Mapsui.Avalonia12" />
     <PackageReference Include="CommunityToolkit.Mvvm" />
     <PackageReference Include="IdentityModel.OidcClient" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" />

src/PostIt/PostIt/Services/CurrentLocationResult.cs

@@ -0,0 +1,28 @@
+namespace PostIt.Services;
+
+public sealed class CurrentLocationResult
+{
+    private CurrentLocationResult(bool isSuccess, bool isPermissionDenied, double? latitude, double? longitude, string message)
+    {
+        IsSuccess = isSuccess;
+        IsPermissionDenied = isPermissionDenied;
+        Latitude = latitude;
+        Longitude = longitude;
+        Message = message;
+    }
+
+    public bool IsSuccess { get; }
+    public bool IsPermissionDenied { get; }
+    public double? Latitude { get; }
+    public double? Longitude { get; }
+    public string Message { get; }
+
+    public static CurrentLocationResult Success(double latitude, double longitude, string? message = null)
+        => new(true, false, latitude, longitude, message ?? "Position récupérée.");
+
+    public static CurrentLocationResult PermissionDenied(string? message = null)
+        => new(false, true, null, null, message ?? "La géolocalisation n'est pas autorisée.");
+
+    public static CurrentLocationResult Unavailable(string? message = null)
+        => new(false, false, null, null, message ?? "La géolocalisation n'est pas disponible sur cette plateforme.");
+}

src/PostIt/PostIt/Services/IReverseGeocodingService.cs

@@ -0,0 +1,9 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace PostIt.Services;
+
+public interface IReverseGeocodingService
+{
+    Task<string?> TryResolveAddressAsync(double latitude, double longitude, CancellationToken cancellationToken = default);
+}

src/PostIt/PostIt/Services/NominatimReverseGeocodingService.cs

@@ -0,0 +1,119 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace PostIt.Services;
+
+public sealed class NominatimReverseGeocodingService : IReverseGeocodingService
+{
+    private static readonly Uri BaseUri = new("https://nominatim.openstreetmap.org/");
+    private readonly HttpClient _httpClient;
+
+    public NominatimReverseGeocodingService(HttpClient? httpClient = null)
+    {
+        _httpClient = httpClient ?? CreateDefaultClient();
+    }
+
+    public async Task<string?> TryResolveAddressAsync(double latitude, double longitude, CancellationToken cancellationToken = default)
+    {
+        var requestUri = BuildReverseUri(latitude, longitude);
+
+        try
+        {
+            using var response = await _httpClient.GetAsync(requestUri, cancellationToken).ConfigureAwait(false);
+            if (!response.IsSuccessStatusCode)
+                return null;
+
+            await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
+            using var json = await JsonDocument.ParseAsync(stream, cancellationToken: cancellationToken).ConfigureAwait(false);
+            return FormatAddress(json.RootElement);
+        }
+        catch (OperationCanceledException)
+        {
+            throw;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    private static HttpClient CreateDefaultClient()
+    {
+        var client = new HttpClient
+        {
+            BaseAddress = BaseUri,
+            Timeout = TimeSpan.FromSeconds(10),
+        };
+        client.DefaultRequestHeaders.UserAgent.Clear();
+        client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("PostIt", "1.1"));
+        client.DefaultRequestHeaders.AcceptLanguage.Add(new StringWithQualityHeaderValue("fr-FR"));
+        client.DefaultRequestHeaders.AcceptLanguage.Add(new StringWithQualityHeaderValue("fr", 0.9));
+        return client;
+    }
+
+    private static Uri BuildReverseUri(double latitude, double longitude)
+    {
+        var lat = latitude.ToString("0.######", CultureInfo.InvariantCulture);
+        var lon = longitude.ToString("0.######", CultureInfo.InvariantCulture);
+        var path = $"reverse?format=jsonv2&addressdetails=1&accept-language=fr&zoom=18&lat={lat}&lon={lon}";
+        return new Uri(path, UriKind.Relative);
+    }
+
+    private static string? FormatAddress(JsonElement root)
+    {
+        if (root.TryGetProperty("address", out var address))
+        {
+            var street = JoinNonEmpty(
+                TryGetString(address, "house_number"),
+                TryGetString(address, "road"));
+
+            var locality = JoinNonEmpty(
+                TryGetString(address, "postcode"),
+                TryGetString(address, "city")
+                    ?? TryGetString(address, "town")
+                    ?? TryGetString(address, "village")
+                    ?? TryGetString(address, "municipality"));
+
+            var formatted = JoinNonEmpty(street, locality);
+            if (!string.IsNullOrWhiteSpace(formatted))
+                return formatted;
+        }
+
+        if (root.TryGetProperty("display_name", out var displayName))
+        {
+            var value = displayName.GetString();
+            if (!string.IsNullOrWhiteSpace(value))
+                return value;
+        }
+
+        return null;
+    }
+
+    private static string? TryGetString(JsonElement element, string propertyName)
+    {
+        return element.TryGetProperty(propertyName, out var property)
+            ? property.GetString()
+            : null;
+    }
+
+    private static string? JoinNonEmpty(params string?[] values)
+    {
+        List<string>? parts = null;
+        foreach (var value in values)
+        {
+            if (string.IsNullOrWhiteSpace(value))
+                continue;
+
+            parts ??= new List<string>();
+            parts.Add(value.Trim());
+        }
+
+        return parts is null || parts.Count == 0 ? null : string.Join(", ", parts);
+    }
+}

src/PostIt/PostIt/Services/Platform.cs

@@ -1,4 +1,7 @@
+using System;
 using IdentityModel.OidcClient.Browser;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace PostIt.Services;
 
@@ -37,4 +40,12 @@ public static class Platform
     /// </summary>
     public static System.Func<IBrowser?>? CreateBrowser { get; set; } =
         () => new CustomSchemeBrowser(CustomScheme);
+
+    /// <summary>
+    /// Optional platform hook used by the shared billing form to request a
+    /// current device position. Platforms that do not expose a native
+    /// location provider can leave the default delegate in place.
+    /// </summary>
+    public static Func<CancellationToken, Task<CurrentLocationResult>> TryGetCurrentLocationAsync { get; set; } =
+        _ => Task.FromResult(CurrentLocationResult.Unavailable());
 }

src/PostIt/PostIt/Services/YavscApiClient.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
@@ -351,6 +352,77 @@ public class YavscApiClient : IYavscApiClient, IAsyncDisposable
         _store.Save(_tokens);
     }
 
+    /// <summary>
+    /// Upload a user avatar to the Yavsc API. The server expects a
+    /// single multipart file named <c>file</c> and validates the image
+    /// content type before persisting it.
+    /// </summary>
+    public async Task<string> SetAvatarAsync(
+        Stream imageStream,
+        string fileName,
+        string? contentType = null,
+        CancellationToken ct = default)
+    {
+        if (imageStream is null)
+            throw new ArgumentNullException(nameof(imageStream));
+        if (string.IsNullOrWhiteSpace(fileName))
+            throw new ArgumentException("A file name is required.", nameof(fileName));
+
+        var endpoint = new Uri(new Uri(Settings.ApiUrl.TrimEnd('/') + "/", UriKind.Absolute), "account/set-avatar");
+
+        await EnsureFreshTokenAsync(ct).ConfigureAwait(false);
+
+        var attemptUpload = async () =>
+        {
+            if (imageStream.CanSeek)
+                imageStream.Position = 0;
+
+            using var content = new MultipartFormDataContent();
+            using var fileContent = new StreamContent(imageStream);
+            fileContent.Headers.ContentType = new MediaTypeHeaderValue(
+                string.IsNullOrWhiteSpace(contentType) ? "application/octet-stream" : contentType);
+            content.Add(fileContent, "file", fileName);
+
+            using var request = new HttpRequestMessage(HttpMethod.Post, endpoint)
+            {
+                Content = content,
+            };
+
+            return await Http.SendAsync(request, ct).ConfigureAwait(false);
+        };
+
+        var response = await attemptUpload().ConfigureAwait(false);
+        if (response.StatusCode == HttpStatusCode.Unauthorized)
+        {
+            response.Dispose();
+            await ForceRefreshAsync(ct).ConfigureAwait(false);
+            response = await attemptUpload().ConfigureAwait(false);
+        }
+
+        await EnsureSuccessOrThrowAsync(response, ct).ConfigureAwait(false);
+
+        var payload = await response.Content.ReadAsStringAsync(ct).ConfigureAwait(false);
+        if (string.IsNullOrWhiteSpace(payload))
+            return "Avatar mis à jour.";
+
+        try
+        {
+            using var json = JsonDocument.Parse(payload);
+            if (json.RootElement.TryGetProperty("message", out var msgEl))
+            {
+                var message = msgEl.GetString();
+                if (!string.IsNullOrWhiteSpace(message))
+                    return message;
+            }
+        }
+        catch (JsonException)
+        {
+            // Keep a user-friendly fallback when the API payload is not JSON.
+        }
+
+        return "Avatar mis à jour.";
+    }
+
     public async Task LogoutAsync()
     {
         _store.Clear();

src/PostIt/PostIt/ViewLocator.cs

@@ -4,7 +4,9 @@ using Avalonia.Controls;
 using Avalonia.Controls.Templates;
 using Microsoft.Extensions.DependencyInjection;
 using PostIt.ViewModels;
+using PostIt.ViewModels.Commands;
 using PostIt.Views;
+using PostIt.Views.Commands;
 
 namespace PostIt;
 
@@ -41,12 +43,14 @@ public class ViewLocator : IDataTemplate
             HomePageViewModel => services.GetRequiredService<HomePage>(),
             ActivitiesPageViewModel => services.GetRequiredService<ActivitiesPage>(),
             CommandFormsPageViewModel => services.GetRequiredService<CommandFormsPage>(),
-            BillingCommandPageViewModel => services.GetRequiredService<BillingCommandPage>(),
+            BrushViewModel => services.GetRequiredService<BrushPage>(),
-            BillingQueriesPageViewModel => services.GetRequiredService<BillingQueriesPage>(),
+            RdvViewModel => services.GetRequiredService<RdvPage>(),
             SignaturePageViewModel => services.GetRequiredService<SignaturePage>(),
             AddCircleMemberDialogViewModel => services.GetRequiredService<AddCircleMemberDialog>(),
             CirclesPageViewModel => services.GetRequiredService<CirclesPage>(),
             PostAclDialogViewModel => services.GetRequiredService<PostAclDialog>(),
+            BillingQueriesPageViewModel => services.GetRequiredService<BillingQueriesPage>(),
+            BillingQueryDetailsPageViewModel => services.GetRequiredService<BillingQueryDetailsPage>(),
             null => new TextBlock { Text = "No view for <null>" },
             _ => new TextBlock { Text = $"No view for {data.GetType().Name}" }
         };

src/PostIt/PostIt/ViewModels/ACL/AddCircleMemberDialogViewModel.cs

@@ -29,7 +29,7 @@ namespace PostIt.ViewModels;
 /// <c>CirclesPage</c> then calls
 /// <see cref="CircleApiClient.AddMemberAsync"/>.</para>
 /// </summary>
-public partial class AddCircleMemberDialogViewModel : ViewModelBase
+public partial class AddCircleMemberDialogViewModel : ViewModelBase, IActionStatusViewModel
 {
     private readonly IUserDirectory _directory;
 
@@ -46,7 +46,10 @@ public partial class AddCircleMemberDialogViewModel : ViewModelBase
     public partial bool IsBusy { get; set; }
 
     [ObservableProperty]
-    public partial string StatusMessage { get; set; } = string.Empty;
+    public partial string StatusMessage { get; set; } = "Pret.";
+
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
 
     /// <summary>
     /// Raised when the user confirms a selection. The hosting
@@ -79,7 +82,7 @@ public partial class AddCircleMemberDialogViewModel : ViewModelBase
         if (string.IsNullOrWhiteSpace(SearchQuery))
         {
             Results.Clear();
-            StatusMessage = "Tapez un nom ou un email";
+            this.SetWarningStatus("Tapez un nom ou un email");
             return;
         }
 
@@ -88,11 +91,11 @@ public partial class AddCircleMemberDialogViewModel : ViewModelBase
         {
             var hits = await _directory.SearchAsync(SearchQuery, CancellationToken.None).ConfigureAwait(true);
             Results = new ObservableCollection<UserSummary>(hits ?? Array.Empty<UserSummary>());
-            StatusMessage = $"{Results.Count} résultat(s)";
+            this.SetInfoStatus($"{Results.Count} résultat(s)");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -110,18 +113,20 @@ public partial class AddCircleMemberDialogViewModel : ViewModelBase
     {
         if (Selected is null)
         {
-            StatusMessage = "Sélectionnez un utilisateur";
+            this.SetWarningStatus("Sélectionnez un utilisateur");
             return;
         }
         Confirmed?.Invoke(this, Selected);
-        var app = App.Current as App;
+        var app = App.Current as App
+            ?? throw new InvalidOperationException("Application PostIt indisponible.");
         await app.GoBackAsync();
     }
 
     [RelayCommand]
     public async Task CloseAsync()
     {
-        var app = App.Current as App;
+        var app = App.Current as App
+            ?? throw new InvalidOperationException("Application PostIt indisponible.");
         await app.GoBackAsync();
     }
 }

src/PostIt/PostIt/ViewModels/ACL/CirclesPageViewModel.cs

@@ -34,7 +34,7 @@ namespace PostIt.ViewModels;
 /// <see cref="OnAddMemberConfirmedAsync"/>. The "remove"
 /// command is per-row and runs inline.</para>
 /// </summary>
-public partial class CirclesPageViewModel : ViewModelBase
+public partial class CirclesPageViewModel : ViewModelBase, IActionStatusViewModel
 {
     private readonly CircleApiClient _client;
 
@@ -63,8 +63,10 @@ public partial class CirclesPageViewModel : ViewModelBase
     public partial bool IsBusy { get; set; }
 
     [ObservableProperty]
-    public partial string StatusMessage { get; set; } = string.Empty;
+    public partial string StatusMessage { get; set; } = "Pret.";
 
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
 
     public CirclesPageViewModel(CircleApiClient client)
     {
@@ -100,11 +102,11 @@ public partial class CirclesPageViewModel : ViewModelBase
         {
             var list = await _client.GetMyCirclesAsync();
             Circles = new ObservableCollection<CircleDto>(list ?? new());
-            StatusMessage = $"{Circles.Count} cercle(s)";
+            this.SetInfoStatus($"{Circles.Count} cercle(s)");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -115,8 +117,10 @@ public partial class CirclesPageViewModel : ViewModelBase
     [RelayCommand]
     internal async Task OpenAddMemberAsync()
     {
-        var app = Application.Current as App;
+        var app = Application.Current as App
-        var services = app?.ServiceProvider;
+            ?? throw new InvalidOperationException("Application PostIt indisponible.");
+        var services = app.ServiceProvider
+            ?? throw new InvalidOperationException("ServiceProvider PostIt indisponible.");
         var directory = services.GetRequiredService<IUserDirectory>();
         AddCircleMemberDialogViewModel model =
         new AddCircleMemberDialogViewModel(directory);
@@ -147,11 +151,11 @@ public partial class CirclesPageViewModel : ViewModelBase
         {
             var list = await _client.GetMembersAsync(circleId);
             Members = new ObservableCollection<CircleMemberDto>(list ?? new());
-            StatusMessage = $"{Members.Count} membre(s)";
+            this.SetInfoStatus($"{Members.Count} membre(s)");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
             Members = new ObservableCollection<CircleMemberDto>();
         }
         finally
@@ -166,7 +170,7 @@ public partial class CirclesPageViewModel : ViewModelBase
         SelectedCircle = null;
         DraftName = string.Empty;
         DraftPublic = false;
-        StatusMessage = "Nouveau cercle";
+        this.SetInfoStatus("Nouveau cercle");
     }
 
     [RelayCommand]
@@ -176,7 +180,7 @@ public partial class CirclesPageViewModel : ViewModelBase
         SelectedCircle = circle;
         DraftName = circle.Name;
         DraftPublic = circle.Public;
-        StatusMessage = $"Édition de « {circle.Name} »";
+        this.SetInfoStatus($"Édition de « {circle.Name} »");
     }
 
     [RelayCommand]
@@ -184,7 +188,7 @@ public partial class CirclesPageViewModel : ViewModelBase
     {
         if (string.IsNullOrWhiteSpace(DraftName))
         {
-            StatusMessage = "Le nom est obligatoire";
+            this.SetWarningStatus("Le nom est obligatoire");
             return;
         }
 
@@ -198,22 +202,22 @@ public partial class CirclesPageViewModel : ViewModelBase
                     Name = DraftName.Trim(),
                     Public = DraftPublic,
                 });
-                StatusMessage = created is null
+                this.SetStatus(
-                    ? "Création échouée"
+                    created is null ? "Création échouée" : $"Cercle « {created.Name} » créé",
-                    : $"Cercle « {created.Name} » créé";
+                    created is null ? StatusSeverity.Warning : StatusSeverity.Info);
             }
             else
             {
                 SelectedCircle.Name = DraftName.Trim();
                 SelectedCircle.Public = DraftPublic;
                 await _client.UpdateCircleAsync(SelectedCircle.Id, SelectedCircle);
-                StatusMessage = $"Cercle « {SelectedCircle.Name} » mis à jour";
+                this.SetInfoStatus($"Cercle « {SelectedCircle.Name} » mis à jour");
             }
             await RefreshAsync();
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -229,7 +233,7 @@ public partial class CirclesPageViewModel : ViewModelBase
         try
         {
             await _client.DeleteCircleAsync(circle.Id);
-            StatusMessage = $"Cercle « {circle.Name} » supprimé";
+            this.SetInfoStatus($"Cercle « {circle.Name} » supprimé");
             // If the deleted circle was the selected one,
             // clear the selection so the Members view goes
             // empty too (the partial setter on
@@ -240,7 +244,7 @@ public partial class CirclesPageViewModel : ViewModelBase
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -261,7 +265,7 @@ public partial class CirclesPageViewModel : ViewModelBase
         try
         {
             await _client.AddMemberAsync(SelectedCircle.Id, picked.Id);
-            StatusMessage = $"« {picked.DisplayName} » ajouté au cercle";
+            this.SetInfoStatus($"« {picked.DisplayName} » ajouté au cercle");
             await LoadMembersAsync(SelectedCircle.Id);
         }
         catch (Exception ex)
@@ -276,7 +280,7 @@ public partial class CirclesPageViewModel : ViewModelBase
             var msg = ex.Message.Contains("409") || ex.Message.Contains("Conflict")
                 ? "Déjà membre du cercle"
                 : $"Erreur: {ex.Message}";
-            StatusMessage = msg;
+            this.SetStatus(msg, msg == "Déjà membre du cercle" ? StatusSeverity.Warning : StatusSeverity.Error);
         }
         finally
         {
@@ -297,11 +301,11 @@ public partial class CirclesPageViewModel : ViewModelBase
         {
             await _client.RemoveMemberAsync(SelectedCircle.Id, member.Id);
             Members.Remove(member);
-            StatusMessage = $"« {member.UserName} » retiré du cercle";
+            this.SetInfoStatus($"« {member.UserName} » retiré du cercle");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {

src/PostIt/PostIt/ViewModels/ACL/PostAclDialogViewModel.cs

@@ -37,7 +37,7 @@ public sealed class PostAclEntry
 /// any 403 / 404 will surface as an exception caught by the
 /// command and routed to <see cref="StatusMessage"/>.</para>
 /// </summary>
-public partial class PostAclDialogViewModel : ViewModelBase
+public partial class PostAclDialogViewModel : ViewModelBase, IActionStatusViewModel
 {
     private readonly BlogAclApiClient _aclClient;
     private readonly CircleApiClient _circleClient;
@@ -61,7 +61,10 @@ public partial class PostAclDialogViewModel : ViewModelBase
     public partial bool IsBusy { get; set; }
 
     [ObservableProperty]
-    public partial string StatusMessage { get; set; } = string.Empty;
+    public partial string StatusMessage { get; set; } = "Pret.";
+
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
 
     /// <summary>
     /// Idempotency gate for <see cref="LoadAsync"/>: the dialog
@@ -115,12 +118,12 @@ public partial class PostAclDialogViewModel : ViewModelBase
             AclEntries = new ObservableCollection<PostAclEntry>(AclEntries.Select(a => ToAclEntry(a.CircleId)));
 
 
-            StatusMessage = $"{AclEntries.Count} autorisation(s)";
+            this.SetInfoStatus($"{AclEntries.Count} autorisation(s)");
             _loaded = true;
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -133,7 +136,7 @@ public partial class PostAclDialogViewModel : ViewModelBase
     {
         if (SelectedCircleToAdd is null)
         {
-            StatusMessage = "Sélectionnez un cercle à ajouter";
+            this.SetWarningStatus("Sélectionnez un cercle à ajouter");
             return;
         }
 
@@ -142,7 +145,7 @@ public partial class PostAclDialogViewModel : ViewModelBase
         {
             if (AclEntries.Any(a => a.CircleId == SelectedCircleToAdd.Id))
             {
-                StatusMessage = $"Cercle « {SelectedCircleToAdd.Name} » déjà autorisé";
+                this.SetWarningStatus($"Cercle « {SelectedCircleToAdd.Name} » déjà autorisé");
                 return;
             }
 
@@ -154,11 +157,11 @@ public partial class PostAclDialogViewModel : ViewModelBase
             if (created is not null)
             {
                 AclEntries.Add(ToAclEntry(created.CircleId));
-                StatusMessage = $"Cercle « {SelectedCircleToAdd.Name} » autorisé";
+                this.SetInfoStatus($"Cercle « {SelectedCircleToAdd.Name} » autorisé");
             }
             else
             {
-                StatusMessage = "Autorisation refusée par le serveur";
+                this.SetWarningStatus("Autorisation refusée par le serveur");
             }
         }
         catch (HttpRequestException ex) when (ex.StatusCode == HttpStatusCode.Conflict)
@@ -166,11 +169,11 @@ public partial class PostAclDialogViewModel : ViewModelBase
             // Conflict means the link already exists in backend. Resync
             // from the dedicated ACL API so the UI reflects server truth.
             await ReloadAclEntriesFromServerAsync();
-            StatusMessage = $"Cercle « {SelectedCircleToAdd.Name} » déjà autorisé";
+            this.SetWarningStatus($"Cercle « {SelectedCircleToAdd.Name} » déjà autorisé");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -189,11 +192,11 @@ public partial class PostAclDialogViewModel : ViewModelBase
             var existing = AclEntries.FirstOrDefault(e => e.CircleId == acl.CircleId);
             if (existing is not null)
                 AclEntries.Remove(existing);
-            StatusMessage = "Autorisation révoquée";
+            this.SetInfoStatus("Autorisation révoquée");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {

src/PostIt/PostIt/ViewModels/Activity/ActivitiesPageViewModel.cs

@@ -13,23 +13,23 @@ using Yavsc.Api.Client;
 
 namespace PostIt.ViewModels;
 
-public partial class ActivitiesPageViewModel : ViewModelBase
+public partial class ActivitiesPageViewModel : ViewModelBase, IActionStatusViewModel
 {
     private readonly ActivityApiClient _client;
     private readonly BillingApiClient _billingClient;
     private bool _syncingSelection;
 
     [ObservableProperty]
-    public partial ObservableCollection<ActivityBrowseItemDto> Activities { get; set; } = new();
+    public partial ObservableCollection<ActivityInfo> Activities { get; set; } = new();
 
     [ObservableProperty]
-    public partial ActivityBrowseItemDto? SelectedActivity { get; set; }
+    public partial ActivityInfo? SelectedActivity { get; set; }
 
     [ObservableProperty]
-    public partial ObservableCollection<ActivityBrowseItemDto> Specializations { get; set; } = new();
+    public partial ObservableCollection<ActivityInfo> Specializations { get; set; } = new();
 
     [ObservableProperty]
-    public partial ActivityBrowseItemDto? SelectedSpecialization { get; set; }
+    public partial ActivityInfo? SelectedSpecialization { get; set; }
 
     [ObservableProperty]
     public partial ObservableCollection<ActivityUserDisplayItem> Performers { get; set; } = new();
@@ -43,7 +43,10 @@ public partial class ActivitiesPageViewModel : ViewModelBase
     [ObservableProperty]
     public partial string StatusMessage { get; set; } = "Choisissez une activité.";
 
-    public ActivityBrowseItemDto? CurrentActivity => SelectedSpecialization ?? SelectedActivity;
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Choisissez une activité.");
+
+    public ActivityInfo? CurrentActivity => SelectedSpecialization ?? SelectedActivity;
     public string SelectedActivityLabel => SelectedActivity?.Name ?? "(aucune activité)";
     public string CurrentActivityLabel => CurrentActivity?.Name ?? "(aucune)";
     public int CurrentFormCount => CurrentActivity?.Forms?.Count ?? 0;
@@ -66,19 +69,19 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         _billingClient = billingClient ?? throw new ArgumentNullException(nameof(billingClient));
     }
 
-    partial void OnSelectedActivityChanged(ActivityBrowseItemDto? value)
+    partial void OnSelectedActivityChanged(ActivityInfo? value)
     {
         if (_syncingSelection) return;
         _ = ShowActivitySafeAsync(value);
     }
 
-    partial void OnSelectedSpecializationChanged(ActivityBrowseItemDto? value)
+    partial void OnSelectedSpecializationChanged(ActivityInfo? value)
     {
         if (_syncingSelection) return;
         _ = ShowSpecializationSafeAsync(value);
     }
 
-    private async Task ShowActivitySafeAsync(ActivityBrowseItemDto? value)
+    private async Task ShowActivitySafeAsync(ActivityInfo? value)
     {
         try
         {
@@ -86,15 +89,15 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         }
         catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
         {
-            StatusMessage = "Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.";
+            this.SetWarningStatus("Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
     }
 
-    private async Task ShowSpecializationSafeAsync(ActivityBrowseItemDto? value)
+    private async Task ShowSpecializationSafeAsync(ActivityInfo? value)
     {
         try
         {
@@ -102,11 +105,11 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         }
         catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
         {
-            StatusMessage = "Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.";
+            this.SetWarningStatus("Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
     }
 
@@ -117,28 +120,28 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         try
         {
             var list = await _client.GetCatalogAsync();
-            Activities = new ObservableCollection<ActivityBrowseItemDto>(list ?? new());
+            Activities = new ObservableCollection<ActivityInfo>(list ?? new());
 
             var first = Activities.FirstOrDefault();
             await ShowActivityAsync(first);
             if (first is null)
             {
-                StatusMessage = "Aucune activité disponible.";
+                this.SetInfoStatus("Aucune activité disponible.");
             }
         }
         catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
         {
-            Activities = new ObservableCollection<ActivityBrowseItemDto>();
+            Activities = new ObservableCollection<ActivityInfo>();
-            Specializations = new ObservableCollection<ActivityBrowseItemDto>();
+            Specializations = new ObservableCollection<ActivityInfo>();
             Performers = new ObservableCollection<ActivityUserDisplayItem>();
-            StatusMessage = "Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.";
+            this.SetWarningStatus("Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.");
         }
         catch (Exception ex)
         {
-            Activities = new ObservableCollection<ActivityBrowseItemDto>();
+            Activities = new ObservableCollection<ActivityInfo>();
-            Specializations = new ObservableCollection<ActivityBrowseItemDto>();
+            Specializations = new ObservableCollection<ActivityInfo>();
             Performers = new ObservableCollection<ActivityUserDisplayItem>();
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -146,7 +149,7 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         }
     }
 
-    public async Task ShowActivityAsync(ActivityBrowseItemDto? activity)
+    public async Task ShowActivityAsync(ActivityInfo? activity)
     {
         _syncingSelection = true;
         try
@@ -163,7 +166,7 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         OnPropertyChanged(nameof(SelectedActivityLabel));
         OnPropertyChanged(nameof(CurrentActivityLabel));
         OnPropertyChanged(nameof(CurrentFormCount));
-        Specializations = new ObservableCollection<ActivityBrowseItemDto>(activity?.Children ?? new());
+        Specializations = new ObservableCollection<ActivityInfo>(activity?.Children ?? new());
 
         if (activity is null)
         {
@@ -175,7 +178,7 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         await LoadPerformersAsync(activity);
     }
 
-    public async Task ShowSpecializationAsync(ActivityBrowseItemDto? specialization)
+    public async Task ShowSpecializationAsync(ActivityInfo? specialization)
     {
         _syncingSelection = true;
         try
@@ -203,28 +206,46 @@ public partial class ActivitiesPageViewModel : ViewModelBase
         await LoadPerformersAsync(specialization);
     }
 
-    private async Task LoadPerformersAsync(ActivityBrowseItemDto activity)
+    private async Task LoadPerformersAsync(ActivityInfo activity)
     {
         IsBusy = true;
         try
         {
             var list = await _client.GetUsersAsync(activity.Code);
-            Performers = new ObservableCollection<ActivityUserDisplayItem>((list ?? new())
+            var items = (list ?? new())
-                .Select(ActivityUserDisplayItem.FromDto));
+                .Select(dto => ActivityUserDisplayItem.FromDto(dto, _client.BuildAvatarXsUrl(dto.UserName)))
+                .ToList();
+
+            await Task.WhenAll(items.Select(async item =>
+            {
+                if (string.IsNullOrWhiteSpace(item.AvatarXsUrl))
+                {
+                    return;
+                }
+
+                if (!Uri.TryCreate(item.AvatarXsUrl, UriKind.Absolute, out var avatarUri))
+                {
+                    return;
+                }
+
+                item.AvatarImage = await ImageHelper.LoadFromWeb(avatarUri);
+            }));
+
+            Performers = new ObservableCollection<ActivityUserDisplayItem>(items);
             SelectedPerformer = null;
-            StatusMessage = $"{activity.Name} · {Performers.Count} utilisateur(s)";
+            this.SetInfoStatus($"{activity.Name} · {Performers.Count} utilisateur(s)");
         }
         catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
         {
             Performers = new ObservableCollection<ActivityUserDisplayItem>();
             SelectedPerformer = null;
-            StatusMessage = "Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.";
+            this.SetWarningStatus("Accès refusé pour les activités (scope 'api'). Déconnectez puis reconnectez-vous.");
         }
         catch (Exception ex)
         {
             Performers = new ObservableCollection<ActivityUserDisplayItem>();
             SelectedPerformer = null;
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -241,7 +262,7 @@ public partial class ActivitiesPageViewModel : ViewModelBase
     {
         if (SelectedPerformer is null || CurrentActivity is null)
         {
-            StatusMessage = "Sélectionnez un utilisateur et une activité avec formulaire.";
+            this.SetWarningStatus("Sélectionnez un utilisateur et une activité avec formulaire.");
             return;
         }
 

src/PostIt/PostIt/ViewModels/Activity/ActivityUserDisplayItem.cs

@@ -1,10 +1,13 @@
+using Avalonia.Media.Imaging;
+using CommunityToolkit.Mvvm.ComponentModel;
 using Yavsc.Abstract.Workflow;
 
 namespace PostIt.ViewModels;
 
-public sealed class ActivityUserDisplayItem
+public sealed partial class ActivityUserDisplayItem : ObservableObject
 {
     public string PerformerId { get; init; } = string.Empty;
+    public string AvatarXsUrl { get; init; } = string.Empty;
     public bool HasPerformerProfile { get; init; }
     public string PerformerBadgeLabel { get; init; } = "Profil pro";
     public bool IsPerformerActive { get; init; }
@@ -13,17 +16,25 @@ public sealed class ActivityUserDisplayItem
     public string PerformerStatusBadgeBorder { get; init; } = "#C62828";
     public string PerformerStatusBadgeForeground { get; init; } = "#8E0000";
     public string UserName { get; init; } = string.Empty;
+    public string AvatarFallbackLabel { get; init; } = "?";
     public string WebSite { get; init; } = string.Empty;
     public int ExtraActivityCount { get; init; }
     public string ExtraActivityLabel { get; init; } = "Pas d'autre activité";
 
-    public static ActivityUserDisplayItem FromDto(ActivityPerformerDto dto)
+    [ObservableProperty]
+    public partial Bitmap? AvatarImage { get; set; }
+
+    public static ActivityUserDisplayItem FromDto(PerformerActivity dto, string avatarXsUrl)
     {
         return new ActivityUserDisplayItem
         {
             PerformerId = dto.PerformerId,
+            AvatarXsUrl = avatarXsUrl,
             HasPerformerProfile = dto.HasPerformerProfile,
             UserName = dto.UserName,
+            AvatarFallbackLabel = string.IsNullOrWhiteSpace(dto.UserName)
+                ? "?"
+                : dto.UserName.Trim()[0].ToString().ToUpperInvariant(),
             WebSite = dto.WebSite,
             IsPerformerActive = dto.Active,
             PerformerStatusBadgeLabel = dto.Active ? "Actif" : "Inactif",

src/PostIt/PostIt/ViewModels/Activity/BillingQueriesPageViewModel.cs

@@ -14,13 +14,13 @@ using Yavsc.Abstract.Workflow;
 
 namespace PostIt.ViewModels;
 
-public partial class BillingQueriesPageViewModel : ViewModelBase
+public partial class BillingQueriesPageViewModel : ViewModelBase, IActionStatusViewModel
 {
     private readonly BillingApiClient _billingClient;
 
-    public ActivityBrowseItemDto Activity { get; }
+    public ActivityInfo Activity { get; }
     public ActivityUserDisplayItem Performer { get; }
-    public CommandFormSummaryDto Form { get; }
+    public CommandFormSummary Form { get; }
     public bool IsReadOnly { get; }
     public bool OngoingOnly { get; }
 
@@ -36,11 +36,14 @@ public partial class BillingQueriesPageViewModel : ViewModelBase
     [ObservableProperty]
     public partial string StatusMessage { get; set; } = "Chargement des commandes...";
 
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Chargement des commandes...");
+
     public string Title => IsReadOnly
         ? $"Demandes en cours ({Form.Title})"
         : $"Commandes {Form.Title}";
     public string ContextLabel => $"{Performer.UserName} · {Activity.Name}";
-    public bool CanOpenDetails => !IsReadOnly;
+    public bool CanOpenDetails => true;
 
     public override bool CanNavigateNext
     {
@@ -55,9 +58,9 @@ public partial class BillingQueriesPageViewModel : ViewModelBase
     }
 
     public BillingQueriesPageViewModel(
-        ActivityBrowseItemDto activity,
+        ActivityInfo activity,
         ActivityUserDisplayItem performer,
-        CommandFormSummaryDto form,
+        CommandFormSummary form,
         BillingApiClient billingClient,
         bool isReadOnly = false,
         bool ongoingOnly = false)
@@ -72,7 +75,7 @@ public partial class BillingQueriesPageViewModel : ViewModelBase
 
     public Task InitializeAsync() => RefreshAsync();
 
-    private bool CanOpenSelectedQuery() => !IsReadOnly && SelectedQuery is not null;
+    private bool CanOpenSelectedQuery() => SelectedQuery is not null;
 
     [RelayCommand]
     public async Task RefreshAsync()
@@ -90,17 +93,17 @@ public partial class BillingQueriesPageViewModel : ViewModelBase
                 .ToList();
 
             Queries = new ObservableCollection<BillingQueryDisplayItem>(filtered);
-            StatusMessage = BuildLoadedStatusMessage(filtered.Count);
+            this.SetInfoStatus(BuildLoadedStatusMessage(filtered.Count));
         }
         catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
         {
             Queries = new ObservableCollection<BillingQueryDisplayItem>();
-            StatusMessage = "Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.";
+            this.SetWarningStatus("Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.");
         }
         catch (Exception ex)
         {
             Queries = new ObservableCollection<BillingQueryDisplayItem>();
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {
@@ -111,15 +114,9 @@ public partial class BillingQueriesPageViewModel : ViewModelBase
     [RelayCommand(CanExecute = nameof(CanOpenSelectedQuery))]
     public async Task OpenSelectedQueryAsync()
     {
-        if (IsReadOnly)
-        {
-            StatusMessage = "Mode lecture seule: l'ouverture en modification est désactivée.";
-            return;
-        }
-
         if (SelectedQuery is null)
         {
-            StatusMessage = "Sélectionnez une commande.";
+            this.SetWarningStatus("Sélectionnez une commande.");
             return;
         }
 
@@ -133,17 +130,22 @@ public partial class BillingQueriesPageViewModel : ViewModelBase
         try
         {
             var details = await _billingClient.GetQueryAsync(Form.ActionName, SelectedQuery.Id).ConfigureAwait(true);
-            var vm = new BillingCommandPageViewModel(Activity, Performer, Form, _billingClient);
+            var vm = new BillingQueryDetailsPageViewModel(
-            await vm.InitializeAsync(details).ConfigureAwait(true);
+                Activity,
+                Performer,
+                Form,
+                _billingClient,
+                details,
+                IsReadOnly);
             await app.PushPageAsync(vm).ConfigureAwait(true);
         }
         catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
         {
-            StatusMessage = "Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.";
+            this.SetWarningStatus("Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur lors de l'ouverture: {ex.Message}";
+            this.SetErrorStatus($"Erreur lors de l'ouverture: {ex.Message}");
         }
         finally
         {

src/PostIt/PostIt/ViewModels/Activity/BillingQueryDetailsPageViewModel.cs

@@ -0,0 +1,208 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using Avalonia;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using PostIt.Helpers;
+using Yavsc;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+
+namespace PostIt.ViewModels;
+
+public partial class BillingQueryDetailsPageViewModel : ViewModelBase, IActionStatusViewModel
+{
+    private readonly BillingApiClient _billingClient;
+    private readonly BillingQueryDetailsDto _details;
+
+    public ActivityInfo Activity { get; }
+    public ActivityUserDisplayItem Performer { get; }
+    public CommandFormSummary Form { get; }
+    public bool IsReadOnly { get; }
+
+    public long Id => _details.Id;
+    public string Title => $"Detail commande #{_details.Id}";
+    public string ContextLabel => $"{Performer.UserName} · {Activity.Name} · {Form.Title}";
+    public string StatusLabel => _details.Status.ToString();
+    public string StatusGlyph => GetStatusGlyph(_details.Status);
+    public string StatusBadgeBackground => GetStatusBadgeBackground(_details.Status);
+    public string StatusBadgeBorder => GetStatusBadgeBorder(_details.Status);
+    public string StatusBadgeForeground => GetStatusBadgeForeground(_details.Status);
+    public string TitleForeground => StatusBadgeForeground;
+    public string BillingCode => _details.BillingCode;
+    public string Description => EmptyAsPlaceholder(_details.Description, "(sans description)");
+    public string Reason => EmptyAsPlaceholder(_details.Reason, "(aucun motif)");
+    public string AdditionalInfo => EmptyAsPlaceholder(_details.AdditionalInfo, "(aucune info complementaire)");
+    public string ClientId => EmptyAsPlaceholder(_details.ClientId, "(non renseigne)");
+    public string EventDateLabel => _details.EventDate?.ToLocalTime().ToString("f") ?? "Date non precisee";
+    public string ConsentLabel => _details.Consent ? "Oui" : "Non";
+    public string ProvisionalLabel => _details.Provisional.HasValue ? _details.Provisional.Value.ToString("0.00") : "(non renseigne)";
+    public string LocationLabel => BuildLocationLabel(_details.Location);
+    public string PrestationsLabel => BuildPrestationsLabel(_details);
+    public bool CanEdit => !IsReadOnly;
+
+    [ObservableProperty]
+    public partial bool IsBusy { get; set; }
+
+    [ObservableProperty]
+    public partial string StatusMessage { get; set; } = "Pret.";
+
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
+
+    public override bool CanNavigateNext
+    {
+        get => false;
+        protected set { _ = value; }
+    }
+
+    public override bool CanNavigatePrevious
+    {
+        get => true;
+        protected set { _ = value; }
+    }
+
+    public BillingQueryDetailsPageViewModel(
+        ActivityInfo activity,
+        ActivityUserDisplayItem performer,
+        CommandFormSummary form,
+        BillingApiClient billingClient,
+        BillingQueryDetailsDto details,
+        bool isReadOnly)
+    {
+        Activity = activity ?? throw new ArgumentNullException(nameof(activity));
+        Performer = performer ?? throw new ArgumentNullException(nameof(performer));
+        Form = form ?? throw new ArgumentNullException(nameof(form));
+        _billingClient = billingClient ?? throw new ArgumentNullException(nameof(billingClient));
+        _details = details ?? throw new ArgumentNullException(nameof(details));
+        IsReadOnly = isReadOnly;
+
+        this.SetInfoStatus("Details de commande charges.");
+    }
+
+    [RelayCommand]
+    private async Task OpenEditorAsync()
+    {
+        if (IsReadOnly)
+        {
+            this.SetWarningStatus("Mode lecture seule: edition desactivee.");
+            return;
+        }
+
+        var app = (App?)Application.Current;
+        if (app is null)
+        {
+            throw new InvalidOperationException("Application PostIt indisponible.");
+        }
+
+        IsBusy = true;
+        try
+        {
+            var vm = Form.CreateCommandPageViewModel(Activity, Performer, _billingClient);
+            if (vm is null)
+            {
+                this.SetWarningStatus("Ce formulaire n'est pas encore pris en charge en edition.");
+                return;
+            }
+
+            await vm.InitializeAsync(_details).ConfigureAwait(true);
+            await app.PushPageAsync(vm).ConfigureAwait(true);
+        }
+        catch (Exception ex)
+        {
+            this.SetErrorStatus($"Erreur lors de l'ouverture en edition: {ex.Message}");
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+
+    [RelayCommand]
+    private async Task BackAsync()
+    {
+        var app = (App?)Application.Current;
+        if (app is null)
+        {
+            throw new InvalidOperationException("Application PostIt indisponible.");
+        }
+
+        await app.GoBackAsync().ConfigureAwait(true);
+    }
+
+    private static string EmptyAsPlaceholder(string? value, string placeholder)
+        => string.IsNullOrWhiteSpace(value) ? placeholder : value;
+
+    private static string BuildLocationLabel(BillingLocationDto? location)
+    {
+        if (location is null)
+        {
+            return "(non renseignee)";
+        }
+
+        var text = EmptyAsPlaceholder(location.Address, "adresse vide");
+        if (location.Latitude.HasValue && location.Longitude.HasValue)
+        {
+            text += $" ({location.Latitude.Value:0.####}, {location.Longitude.Value:0.####})";
+        }
+
+        return text;
+    }
+
+    private static string BuildPrestationsLabel(BillingQueryDetailsDto details)
+    {
+        if (details.PrestationIds.Count > 0)
+        {
+            return string.Join(", ", details.PrestationIds.Select(static id => id.ToString()));
+        }
+
+        return details.PrestationId.HasValue
+            ? details.PrestationId.Value.ToString()
+            : "(aucune)";
+    }
+
+    private static string GetStatusBadgeBackground(QueryStatus status)
+        => status switch
+        {
+            QueryStatus.Accepted => "#E6F7EC",
+            QueryStatus.InProgress => "#FFF4D6",
+            QueryStatus.Rejected => "#FDECEA",
+            QueryStatus.Failed => "#ECEFF1",
+            QueryStatus.Success => "#E8F8EF",
+            _ => "#EAF3FF",
+        };
+
+    private static string GetStatusBadgeBorder(QueryStatus status)
+        => status switch
+        {
+            QueryStatus.Accepted => "#2E7D32",
+            QueryStatus.InProgress => "#B26A00",
+            QueryStatus.Rejected => "#C62828",
+            QueryStatus.Failed => "#607D8B",
+            QueryStatus.Success => "#1E8E3E",
+            _ => "#2A5EA8",
+        };
+
+    private static string GetStatusBadgeForeground(QueryStatus status)
+        => status switch
+        {
+            QueryStatus.Accepted => "#1B5E20",
+            QueryStatus.InProgress => "#7A4A00",
+            QueryStatus.Rejected => "#8E0000",
+            QueryStatus.Failed => "#37474F",
+            QueryStatus.Success => "#145A2A",
+            _ => "#1A4178",
+        };
+
+    private static string GetStatusGlyph(QueryStatus status)
+        => status switch
+        {
+            QueryStatus.Accepted => "OK",
+            QueryStatus.InProgress => "~",
+            QueryStatus.Rejected => "!",
+            QueryStatus.Failed => "X",
+            QueryStatus.Success => "V",
+            _ => "i",
+        };
+}

src/PostIt/PostIt/ViewModels/Activity/CommandFormsPageViewModel.cs

@@ -11,21 +11,24 @@ using Yavsc.Api.Client;
 
 namespace PostIt.ViewModels;
 
-public partial class CommandFormsPageViewModel : ViewModelBase
+public partial class CommandFormsPageViewModel : ViewModelBase, IActionStatusViewModel
 {
     private readonly BillingApiClient _billingClient;
 
-    public ActivityBrowseItemDto Activity { get; }
+    public ActivityInfo Activity { get; }
     public ActivityUserDisplayItem Performer { get; }
 
     [ObservableProperty]
-    public partial ObservableCollection<CommandFormSummaryDto> Forms { get; set; }
+    public partial ObservableCollection<CommandFormSummary> Forms { get; set; }
 
     [ObservableProperty, NotifyCanExecuteChangedFor(nameof(OpenSelectedFormCommand)), NotifyCanExecuteChangedFor(nameof(OpenQueriesCommand)), NotifyCanExecuteChangedFor(nameof(OpenOngoingQueriesCommand))]
-    public partial CommandFormSummaryDto? SelectedForm { get; set; }
+    public partial CommandFormSummary? SelectedForm { get; set; }
 
     [ObservableProperty]
-    public partial string StatusMessage { get; set; }
+    public partial string StatusMessage { get; set; } = "Pret.";
+
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
 
     public string Title => $"Formulaires pour {Performer.UserName}";
     public string ContextLabel => $"{Activity.Name} · {Forms.Count} formulaire(s)";
@@ -43,7 +46,7 @@ public partial class CommandFormsPageViewModel : ViewModelBase
     }
 
     public CommandFormsPageViewModel(
-        ActivityBrowseItemDto activity,
+        ActivityInfo activity,
         ActivityUserDisplayItem performer,
         BillingApiClient billingClient)
     {
@@ -51,13 +54,15 @@ public partial class CommandFormsPageViewModel : ViewModelBase
         Performer = performer ?? throw new ArgumentNullException(nameof(performer));
         _billingClient = billingClient ?? throw new ArgumentNullException(nameof(billingClient));
 
-        Forms = new ObservableCollection<CommandFormSummaryDto>((activity.Forms ?? new())
+        Forms = new ObservableCollection<CommandFormSummary>((activity.Forms ?? new())
             .OrderBy(f => f.Title)
             .ThenBy(f => f.ActionName));
         SelectedForm = Forms.FirstOrDefault();
-        StatusMessage = Forms.Count == 0
+        this.SetStatus(
+            Forms.Count == 0
                 ? "Aucun formulaire n'est disponible pour cette activité."
-            : "Choisissez le formulaire à utiliser.";
+                : "Choisissez le formulaire à utiliser.",
+            Forms.Count == 0 ? StatusSeverity.Warning : StatusSeverity.Info);
     }
 
     private bool CanOpenSelectedForm() => SelectedForm is not null;
@@ -71,7 +76,7 @@ public partial class CommandFormsPageViewModel : ViewModelBase
     {
         if (SelectedForm is null)
         {
-            StatusMessage = "Sélectionnez un formulaire.";
+            this.SetWarningStatus("Sélectionnez un formulaire.");
             return;
         }
 
@@ -81,8 +86,9 @@ public partial class CommandFormsPageViewModel : ViewModelBase
             throw new InvalidOperationException("Application PostIt indisponible.");
         }
 
-        var vm = new BillingCommandPageViewModel(Activity, Performer, SelectedForm, _billingClient);
+        var vm =  SelectedForm.CreateCommandPageViewModel(
-        await vm.InitializeAsync();
+            Activity, Performer, _billingClient);
+        await vm!.InitializeAsync();
         await app.PushPageAsync(vm);
     }
 
@@ -91,7 +97,7 @@ public partial class CommandFormsPageViewModel : ViewModelBase
     {
         if (SelectedForm is null)
         {
-            StatusMessage = "Sélectionnez un formulaire.";
+            this.SetWarningStatus("Sélectionnez un formulaire.");
             return;
         }
 
@@ -111,7 +117,7 @@ public partial class CommandFormsPageViewModel : ViewModelBase
     {
         if (SelectedForm is null)
         {
-            StatusMessage = "Sélectionnez un formulaire.";
+            this.SetWarningStatus("Sélectionnez un formulaire.");
             return;
         }
 

src/PostIt/PostIt/ViewModels/BillingCommandPageViewModel.cs

@@ -1,399 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Globalization;
-using System.Net;
-using System.Net.Http;
-using System.Linq;
-using System.Threading.Tasks;
-using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
-using Yavsc;
-using Yavsc.Abstract.Workflow;
-using Yavsc.Api.Client;
-using Yavsc.Models.Billing;
-using Yavsc.Models.Haircut;
-using Yavsc.Models.Relationship;
-
-namespace PostIt.ViewModels;
-
-public partial class BillingCommandPageViewModel : ViewModelBase
-{
-    private readonly BillingApiClient _billingClient;
-
-    public ActivityBrowseItemDto Activity { get; }
-    public ActivityUserDisplayItem Performer { get; }
-    public CommandFormSummaryDto Form { get; }
-
-    [ObservableProperty]
-    public partial bool IsBusy { get; set; }
-
-    [ObservableProperty]
-    public partial string StatusMessage { get; set; }
-
-    [ObservableProperty]
-    public partial string EventDateText { get; set; }
-
-    [ObservableProperty]
-    public partial string Reason { get; set; } = string.Empty;
-
-    [ObservableProperty]
-    public partial string Address { get; set; } = string.Empty;
-
-    [ObservableProperty]
-    public partial string LatitudeText { get; set; } = string.Empty;
-
-    [ObservableProperty]
-    public partial string LongitudeText { get; set; } = string.Empty;
-
-    [ObservableProperty]
-    public partial bool Consent { get; set; } = true;
-
-    [ObservableProperty]
-    public partial ObservableCollection<HairPrestationDto> AvailablePrestations { get; set; } = new();
-
-    [ObservableProperty]
-    public partial HairPrestationDto? SelectedPrestation { get; set; }
-
-    [ObservableProperty]
-    public partial ObservableCollection<SelectableHairPrestationItem> MultiPrestations { get; set; } = new();
-
-    [ObservableProperty]
-    public partial string AdditionalInfo { get; set; } = string.Empty;
-
-    [ObservableProperty]
-    public partial long? ExistingQueryId { get; set; }
-
-    [ObservableProperty]
-    public partial QueryStatus CommandStatus { get; set; } = QueryStatus.Inserted;
-
-    public string Title => Form.Title;
-    public string PerformerLabel => Performer.UserName;
-    public string ActivityLabel => Activity.Name;
-    public bool IsSupported => IsRdv || IsBrush || IsMultiBrush;
-    public bool IsRdv => string.Equals(Form.ActionName, BillingCodes.Rdv, StringComparison.Ordinal);
-    public bool IsBrush => string.Equals(Form.ActionName, BillingCodes.Brush, StringComparison.Ordinal);
-    public bool IsMultiBrush => string.Equals(Form.ActionName, BillingCodes.MBrush, StringComparison.Ordinal);
-    public bool ShowsReason => IsRdv;
-    public bool ShowsAdditionalInfo => IsBrush;
-    public bool ShowsSinglePrestation => IsBrush;
-    public bool ShowsMultiplePrestations => IsMultiBrush;
-    public string BillingRoute => $"/billing/{Form.ActionName}";
-    public bool IsEditingExisting => ExistingQueryId.HasValue;
-    public string SubmitLabel => IsEditingExisting ? "Mettre à jour la commande" : "Poster la commande";
-    public string SupportMessage => IsSupported
-        ? IsRdv
-            ? "Complétez les informations du rendez-vous puis postez la commande."
-            : IsBrush
-                ? "Choisissez une prestation coiffure puis postez la commande."
-                : "Choisissez une ou plusieurs prestations coiffure puis postez la commande."
-        : $"Le formulaire {Form.ActionName} n'est pas encore pris en charge dans PostIt.";
-
-    public override bool CanNavigateNext
-    {
-        get => false;
-        protected set { _ = value; }
-    }
-
-    public override bool CanNavigatePrevious
-    {
-        get => true;
-        protected set { _ = value; }
-    }
-
-    public BillingCommandPageViewModel(
-        ActivityBrowseItemDto activity,
-        ActivityUserDisplayItem performer,
-        CommandFormSummaryDto form,
-        BillingApiClient billingClient)
-    {
-        Activity = activity ?? throw new ArgumentNullException(nameof(activity));
-        Performer = performer ?? throw new ArgumentNullException(nameof(performer));
-        Form = form ?? throw new ArgumentNullException(nameof(form));
-        _billingClient = billingClient ?? throw new ArgumentNullException(nameof(billingClient));
-
-        EventDateText = DateTime.Now.AddDays(1).ToString("yyyy-MM-dd HH:mm", CultureInfo.InvariantCulture);
-        StatusMessage = SupportMessage;
-    }
-
-    partial void OnExistingQueryIdChanged(long? value)
-    {
-        OnPropertyChanged(nameof(IsEditingExisting));
-        OnPropertyChanged(nameof(SubmitLabel));
-    }
-
-    public async Task InitializeAsync(BillingQueryDetailsDto? existingQuery = null)
-    {
-        if (!IsBrush && !IsMultiBrush)
-        {
-            if (existingQuery is not null)
-            {
-                ApplyExistingQuery(existingQuery);
-            }
-
-            return;
-        }
-
-        IsBusy = true;
-        try
-        {
-            var prestations = await _billingClient.GetHairPrestationsAsync(Form.ActionName).ConfigureAwait(true);
-            AvailablePrestations = new ObservableCollection<HairPrestationDto>(prestations ?? new List<HairPrestationDto>());
-            SelectedPrestation = AvailablePrestations.FirstOrDefault();
-            MultiPrestations = new ObservableCollection<SelectableHairPrestationItem>(AvailablePrestations.Select(SelectableHairPrestationItem.FromDto));
-
-            StatusMessage = AvailablePrestations.Count == 0
-                ? "Aucune prestation coiffure disponible."
-                : SupportMessage;
-        }
-        catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
-        {
-            StatusMessage = "Accès refusé au catalogue de prestations (scope 'api'). Déconnectez puis reconnectez-vous.";
-        }
-        catch (Exception ex)
-        {
-            StatusMessage = $"Erreur lors du chargement des prestations: {ex.Message}";
-        }
-        finally
-        {
-            IsBusy = false;
-        }
-
-        if (existingQuery is not null)
-        {
-            ApplyExistingQuery(existingQuery);
-        }
-    }
-
-    [RelayCommand]
-    private async Task SubmitAsync()
-    {
-        if (!IsSupported)
-        {
-            StatusMessage = SupportMessage;
-            return;
-        }
-
-        if (!Consent)
-        {
-            StatusMessage = "Le consentement est requis pour poster la commande.";
-            return;
-        }
-
-        if (!TryParseEventDate(out var eventDate))
-        {
-            StatusMessage = "La date doit être saisie au format yyyy-MM-dd HH:mm.";
-            return;
-        }
-
-        if (IsRdv && string.IsNullOrWhiteSpace(Reason))
-        {
-            StatusMessage = "Le motif du rendez-vous est requis.";
-            return;
-        }
-
-        if (string.IsNullOrWhiteSpace(Address))
-        {
-            StatusMessage = "L'adresse du rendez-vous est requise.";
-            return;
-        }
-
-        if (!TryParseCoordinate(LatitudeText, out var latitude))
-        {
-            StatusMessage = "Latitude invalide.";
-            return;
-        }
-
-        if (!TryParseCoordinate(LongitudeText, out var longitude))
-        {
-            StatusMessage = "Longitude invalide.";
-            return;
-        }
-
-        IsBusy = true;
-        try
-        {
-            var location = new Location
-            {
-                Address = Address.Trim(),
-                Latitude = latitude,
-                Longitude = longitude,
-            };
-
-            var payload = new BillingQueryDetailsDto
-            {
-                Id = ExistingQueryId ?? 0,
-                BillingCode = Form.ActionName,
-                ActivityCode = Activity.Code,
-                PerformerId = Performer.PerformerId,
-                Consent = Consent,
-                EventDate = eventDate,
-                Status = CommandStatus,
-                Reason = Reason.Trim(),
-                AdditionalInfo = string.IsNullOrWhiteSpace(AdditionalInfo) ? string.Empty : AdditionalInfo.Trim(),
-                Location = new BillingLocationDto
-                {
-                    Address = location.Address,
-                    Latitude = location.Latitude,
-                    Longitude = location.Longitude,
-                }
-            };
-
-            if (IsRdv)
-            {
-                if (IsEditingExisting)
-                {
-                    await _billingClient.UpdateAsync(Form.ActionName, ExistingQueryId!.Value, payload).ConfigureAwait(true);
-                }
-                else
-                {
-                    await _billingClient.CreateAsync(Form.ActionName, new
-                    {
-                        ActivityCode = Activity.Code,
-                        PerformerId = Performer.PerformerId,
-                        Consent,
-                        EventDate = eventDate,
-                        Location = location,
-                        Reason = payload.Reason,
-                        Status = payload.Status,
-                    }).ConfigureAwait(true);
-                }
-            }
-            else if (IsBrush)
-            {
-                if (SelectedPrestation is null)
-                {
-                    StatusMessage = "Sélectionnez une prestation coiffure.";
-                    return;
-                }
-
-                payload.PrestationId = SelectedPrestation.Id;
-
-                if (IsEditingExisting)
-                {
-                    await _billingClient.UpdateAsync(Form.ActionName, ExistingQueryId!.Value, payload).ConfigureAwait(true);
-                }
-                else
-                {
-                    await _billingClient.CreateAsync(Form.ActionName, new
-                    {
-                        ActivityCode = Activity.Code,
-                        PerformerId = Performer.PerformerId,
-                        Consent,
-                        EventDate = (DateTime?)eventDate,
-                        Location = location,
-                        PrestationId = SelectedPrestation.Id,
-                        AdditionalInfo = string.IsNullOrWhiteSpace(AdditionalInfo) ? null : AdditionalInfo.Trim(),
-                        Status = payload.Status,
-                    }).ConfigureAwait(true);
-                }
-            }
-            else if (IsMultiBrush)
-            {
-                var selectedPrestations = MultiPrestations.Where(x => x.IsSelected).ToList();
-                if (selectedPrestations.Count == 0)
-                {
-                    StatusMessage = "Sélectionnez au moins une prestation coiffure.";
-                    return;
-                }
-
-                payload.PrestationIds = selectedPrestations.Select(x => x.Id).ToList();
-
-                if (IsEditingExisting)
-                {
-                    await _billingClient.UpdateAsync(Form.ActionName, ExistingQueryId!.Value, payload).ConfigureAwait(true);
-                }
-                else
-                {
-                    await _billingClient.CreateAsync(Form.ActionName, new
-                    {
-                        ActivityCode = Activity.Code,
-                        PerformerId = Performer.PerformerId,
-                        Consent,
-                        EventDate = eventDate,
-                        Location = location,
-                        Prestations = selectedPrestations.Select(x => new { PrestationId = x.Id }).ToList(),
-                        Status = payload.Status,
-                    }).ConfigureAwait(true);
-                }
-            }
-
-            StatusMessage = IsEditingExisting
-                ? $"Commande #{ExistingQueryId} mise à jour sur {BillingRoute} pour {Performer.UserName}."
-                : $"Commande transmise sur {BillingRoute} pour {Performer.UserName}.";
-        }
-        catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
-        {
-            StatusMessage = "Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.";
-        }
-        catch (Exception ex)
-        {
-            StatusMessage = $"Erreur lors de l'envoi: {ex.Message}";
-        }
-        finally
-        {
-            IsBusy = false;
-        }
-    }
-
-    private void ApplyExistingQuery(BillingQueryDetailsDto existingQuery)
-    {
-        ExistingQueryId = existingQuery.Id;
-        CommandStatus = existingQuery.Status;
-        Consent = existingQuery.Consent;
-        Reason = existingQuery.Reason ?? string.Empty;
-        AdditionalInfo = existingQuery.AdditionalInfo ?? string.Empty;
-
-        if (existingQuery.EventDate is not null)
-        {
-            EventDateText = existingQuery.EventDate.Value
-                .ToLocalTime()
-                .ToString("yyyy-MM-dd HH:mm", CultureInfo.InvariantCulture);
-        }
-
-        if (existingQuery.Location is not null)
-        {
-            Address = existingQuery.Location.Address ?? string.Empty;
-            LatitudeText = existingQuery.Location.Latitude.ToString(CultureInfo.InvariantCulture);
-            LongitudeText = existingQuery.Location.Longitude.ToString(CultureInfo.InvariantCulture);
-        }
-
-        if (IsBrush && existingQuery.PrestationId is not null)
-        {
-            SelectedPrestation = AvailablePrestations.FirstOrDefault(x => x.Id == existingQuery.PrestationId.Value);
-        }
-
-        if (IsMultiBrush)
-        {
-            var selectedIds = existingQuery.PrestationIds is null
-                ? new HashSet<long>()
-                : new HashSet<long>(existingQuery.PrestationIds);
-            foreach (var item in MultiPrestations)
-            {
-                item.IsSelected = selectedIds.Contains(item.Id);
-            }
-        }
-
-        StatusMessage = $"Commande #{existingQuery.Id} chargée.";
-    }
-
-    private bool TryParseEventDate(out DateTime eventDate)
-    {
-        return DateTime.TryParse(
-            EventDateText,
-            CultureInfo.CurrentCulture,
-            DateTimeStyles.AssumeLocal,
-            out eventDate)
-            || DateTime.TryParse(
-                EventDateText,
-                CultureInfo.InvariantCulture,
-                DateTimeStyles.AssumeLocal,
-                out eventDate);
-    }
-
-    private static bool TryParseCoordinate(string text, out double value)
-    {
-        return double.TryParse(text, NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.CurrentCulture, out value)
-            || double.TryParse(text, NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.InvariantCulture, out value);
-    }
-}

src/PostIt/PostIt/ViewModels/Commands/BillingCommandPageViewModel.cs

@@ -0,0 +1,111 @@
+using System;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using Yavsc;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+using Yavsc.Models.Billing;
+
+namespace PostIt.ViewModels;
+
+public abstract partial class BillingCommandPageViewModel : RemoteViewModelBase, IActionStatusViewModel
+{
+    protected readonly BillingApiClient _billingClient;
+
+    public ActivityInfo Activity { get; }
+    public ActivityUserDisplayItem Performer { get; }
+    public CommandFormSummary Form { get; }
+
+    [ObservableProperty]
+    public partial bool IsBusy { get; set; }
+
+    [ObservableProperty]
+    public partial string StatusMessage { get; set; } = "Pret.";
+
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
+
+    [ObservableProperty]
+    public partial string Reason { get; set; } = string.Empty;
+
+
+
+    [ObservableProperty]
+    public partial bool Consent { get; set; } = true;
+
+
+    [ObservableProperty]
+    public partial string AdditionalInfo { get; set; } = string.Empty;
+
+    [ObservableProperty]
+    public partial long? ExistingQueryId { get; set; }
+
+    [ObservableProperty]
+    public partial QueryStatus CommandStatus { get; set; } = QueryStatus.Inserted;
+
+    public bool CanUseCurrentLocation => IsSupported && !IsBusy;
+
+    public string Title => Form.Title;
+    public string PerformerLabel => Performer.UserName;
+    public string ActivityLabel => Activity.Name;
+    public virtual bool IsSupported => true;
+    public string BillingRoute => $"/billing/{Form.ActionName}";
+    public bool IsEditingExisting => ExistingQueryId.HasValue;
+    public string SubmitLabel => IsEditingExisting ? "Mettre à jour la commande" : "Poster la commande";
+    public virtual string SupportMessage => $"Le formulaire {Form.ActionName} n'est pas encore pris en charge dans PostIt.";
+
+    public override bool CanNavigateNext
+    {
+        get => false;
+        protected set { _ = value; }
+    }
+
+    public override bool CanNavigatePrevious
+    {
+        get => true;
+        protected set { _ = value; }
+    }
+
+    public BillingCommandPageViewModel(
+        ActivityInfo activity,
+        ActivityUserDisplayItem performer,
+        CommandFormSummary form,
+        BillingApiClient billingClient)
+    {
+        Activity = activity ?? throw new ArgumentNullException(nameof(activity));
+        Performer = performer ?? throw new ArgumentNullException(nameof(performer));
+        Form = form ?? throw new ArgumentNullException(nameof(form));
+        _billingClient = billingClient ?? throw new ArgumentNullException(nameof(billingClient));
+
+        this.SetInfoStatus(SupportMessage);
+    }
+
+    partial void OnExistingQueryIdChanged(long? value)
+    {
+        OnPropertyChanged(nameof(IsEditingExisting));
+        OnPropertyChanged(nameof(SubmitLabel));
+    }
+
+    partial void OnIsBusyChanged(bool value)
+    {
+        OnPropertyChanged(nameof(CanUseCurrentLocation));
+    }
+
+    public async Task InitializeAsync(BillingQueryDetailsDto? existingQuery = null)
+    {
+        await LoadAsync();
+        if (existingQuery is not null)
+        {
+            ApplyExistingQuery(existingQuery);
+            return;
+        }
+    }
+
+    protected abstract void ApplyExistingQuery(BillingQueryDetailsDto existingQuery);
+
+
+
+    [RelayCommand]
+    protected abstract Task SubmitAsync();
+}

src/PostIt/PostIt/ViewModels/Commands/BrushViewModel.cs

@@ -0,0 +1,167 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+using Yavsc.Models.Billing;
+using Yavsc.Models.Haircut;
+namespace PostIt.ViewModels.Commands;
+
+public partial class BrushViewModel : RdvViewModel
+{
+    public override string SupportMessage => "Choisissez une prestation coiffure puis postez la commande.";
+
+    [ObservableProperty]
+    public partial ObservableCollection<HairPrestationDto> AvailablePrestations { get; set; } = new();
+
+    [ObservableProperty]
+    public partial HairPrestationDto? SelectedPrestation { get; set; }
+
+    public BrushViewModel(ActivityInfo activity, ActivityUserDisplayItem performer, CommandFormSummary form, BillingApiClient billingClient)
+        : base(activity, performer, form, billingClient)
+    {
+    }
+
+    public override async Task LoadAsync()
+    {
+        var prestations = await _billingClient.GetHairPrestationsAsync(Form.ActionName);
+
+        AvailablePrestations = new ObservableCollection<HairPrestationDto>
+            (prestations ?? new List<HairPrestationDto>());
+
+        if (SelectedPrestation is null)
+        {
+            SelectedPrestation = AvailablePrestations.FirstOrDefault();
+        }
+
+    }
+
+    protected override void ApplyExistingQuery(BillingQueryDetailsDto existingQuery)
+    {
+        base.ApplyExistingQuery(existingQuery);
+
+        if (existingQuery.PrestationId is not null)
+        {
+            SelectedPrestation = AvailablePrestations.FirstOrDefault(x => x.Id == existingQuery.PrestationId.Value);
+        }
+
+        IsBusy = true;
+        try
+        {
+            if (SelectedPrestation is null)
+            {
+                SelectedPrestation = AvailablePrestations.FirstOrDefault();
+            }
+
+            this.SetStatus(
+                AvailablePrestations.Count == 0
+                    ? "Aucune prestation coiffure disponible."
+                    : SupportMessage,
+                AvailablePrestations.Count == 0 ? StatusSeverity.Warning : StatusSeverity.Info);
+        }
+        catch (HttpRequestException ex)
+        when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
+        {
+            this.SetWarningStatus("Accès refusé au catalogue de prestations (scope 'api'). Déconnectez puis reconnectez-vous.");
+        }
+        catch (Exception ex)
+        {
+            this.SetErrorStatus($"Erreur lors du chargement des prestations: {ex.Message}");
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+
+    protected override async Task SubmitAsync()
+    {
+        if (!Consent)
+        {
+            this.SetWarningStatus("Le consentement est requis pour poster la commande.");
+            return;
+        }
+
+        if (string.IsNullOrWhiteSpace(Address))
+        {
+            this.SetWarningStatus("L'adresse du rendez-vous est requise.");
+            return;
+        }
+
+        if (SelectedPrestation is null)
+        {
+            this.SetWarningStatus("Sélectionnez une prestation coiffure.");
+            return;
+        }
+
+        IsBusy = true;
+        try
+        {
+            var address = Address.Trim();
+            var locationPayload = BuildLocationPayload(address, Latitude, Longitude);
+
+            var payload = new BillingQueryDetailsDto
+            {
+                Id = ExistingQueryId ?? 0,
+                BillingCode = Form.ActionName,
+                ActivityCode = Activity.Code,
+                PerformerId = Performer.PerformerId,
+                Consent = Consent,
+                EventDate = EventDate,
+                Status = CommandStatus,
+                Reason = Reason.Trim(),
+                AdditionalInfo = string.IsNullOrWhiteSpace(AdditionalInfo) ? string.Empty : AdditionalInfo.Trim(),
+                Location = new BillingLocationDto
+                {
+                    Address = address,
+                    Latitude = Latitude,
+                    Longitude = Longitude,
+                }
+            };
+
+            payload.PrestationId = SelectedPrestation.Id;
+
+            if (IsEditingExisting)
+            {
+                await _billingClient.UpdateAsync(Form.ActionName, ExistingQueryId!.Value, payload).ConfigureAwait(true);
+            }
+            else
+            {
+                await _billingClient.CreateAsync(Form.ActionName, new
+                {
+                    ActivityCode = Activity.Code,
+                    PerformerId = Performer.PerformerId,
+                    Consent,
+                    EventDate = (DateTime?)EventDate,
+                    Location = locationPayload,
+                    PrestationId = SelectedPrestation.Id,
+                    AdditionalInfo = string.IsNullOrWhiteSpace(AdditionalInfo) ? null : AdditionalInfo.Trim(),
+                    Status = payload.Status,
+                }).ConfigureAwait(true);
+            }
+
+            this.SetInfoStatus(IsEditingExisting
+                ? $"Commande #{ExistingQueryId} mise à jour sur {BillingRoute} pour {Performer.UserName}."
+                : $"Commande transmise sur {BillingRoute} pour {Performer.UserName}.");
+        }
+        catch (HttpRequestException ex)
+        when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
+        {
+            this.SetWarningStatus("Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.");
+        }
+        catch (Exception ex)
+        {
+            this.SetErrorStatus($"Erreur lors de l'envoi de la commande: {ex.Message}");
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+
+    }
+}

src/PostIt/PostIt/ViewModels/Commands/MBrushViewModel.cs

@@ -0,0 +1,130 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+using Yavsc.Models.Billing;
+
+namespace PostIt.ViewModels.Commands;
+
+public partial class MBrushViewModel : BrushViewModel
+{
+    public override string SupportMessage => "Choisissez une ou plusieurs prestations coiffure puis postez la commande.";
+
+    [ObservableProperty]
+    public partial ObservableCollection<SelectableHairPrestationItem> MultiPrestations { get; set; } = new();
+
+    public MBrushViewModel(ActivityInfo activity, ActivityUserDisplayItem performer, CommandFormSummary form, BillingApiClient billingClient)
+        : base(activity, performer, form, billingClient)
+    {
+    }
+
+    public override async Task LoadAsync()
+    {
+        await base.LoadAsync().ConfigureAwait(true);
+        MultiPrestations = new ObservableCollection<SelectableHairPrestationItem>(
+            AvailablePrestations.Select(SelectableHairPrestationItem.FromDto));
+    }
+
+    protected override void ApplyExistingQuery(BillingQueryDetailsDto existingQuery)
+    {
+        base.ApplyExistingQuery(existingQuery);
+
+        var selectedIds = existingQuery.PrestationIds is null
+            ? new HashSet<long>()
+            : new HashSet<long>(existingQuery.PrestationIds);
+
+        foreach (var item in MultiPrestations)
+        {
+            item.IsSelected = selectedIds.Contains(item.Id);
+        }
+    }
+
+    protected override async Task SubmitAsync()
+    {
+        if (!Consent)
+        {
+            this.SetWarningStatus("Le consentement est requis pour poster la commande.");
+            return;
+        }
+
+        if (string.IsNullOrWhiteSpace(Address))
+        {
+            this.SetWarningStatus("L'adresse du rendez-vous est requise.");
+            return;
+        }
+
+        var selectedPrestations = MultiPrestations.Where(x => x.IsSelected).ToList();
+        if (selectedPrestations.Count == 0)
+        {
+            this.SetWarningStatus("Sélectionnez au moins une prestation coiffure.");
+            return;
+        }
+
+        IsBusy = true;
+        try
+        {
+            var address = Address.Trim();
+            var locationPayload = BuildLocationPayload(address, Latitude, Longitude);
+
+            var payload = new BillingQueryDetailsDto
+            {
+                Id = ExistingQueryId ?? 0,
+                BillingCode = Form.ActionName,
+                ActivityCode = Activity.Code,
+                PerformerId = Performer.PerformerId,
+                Consent = Consent,
+                EventDate = EventDate,
+                Status = CommandStatus,
+                Reason = Reason.Trim(),
+                Location = new BillingLocationDto
+                {
+                    Address = address,
+                    Latitude = Latitude,
+                    Longitude = Longitude,
+                },
+                PrestationIds = selectedPrestations.Select(x => x.Id).ToList(),
+            };
+
+            if (IsEditingExisting)
+            {
+                await _billingClient.UpdateAsync(Form.ActionName, ExistingQueryId!.Value, payload).ConfigureAwait(true);
+            }
+            else
+            {
+                await _billingClient.CreateAsync(Form.ActionName, new
+                {
+                    ActivityCode = Activity.Code,
+                    PerformerId = Performer.PerformerId,
+                    Consent,
+                    EventDate = EventDate,
+                    Location = locationPayload,
+                    Prestations = selectedPrestations.Select(x => new { PrestationId = x.Id }).ToList(),
+                    Status = payload.Status,
+                }).ConfigureAwait(true);
+            }
+
+            this.SetInfoStatus(IsEditingExisting
+                ? $"Commande #{ExistingQueryId} mise à jour sur {BillingRoute} pour {Performer.UserName}."
+                : $"Commande transmise sur {BillingRoute} pour {Performer.UserName}.");
+        }
+        catch (HttpRequestException ex)
+            when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
+        {
+            this.SetWarningStatus("Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.");
+        }
+        catch (Exception ex)
+        {
+            this.SetErrorStatus($"Erreur lors de l'envoi de la commande: {ex.Message}");
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+}

src/PostIt/PostIt/ViewModels/Commands/RdvViewModel.cs

@@ -0,0 +1,321 @@
+using System;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using PostIt.Services;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Api.Client;
+
+namespace PostIt.ViewModels.Commands;
+
+public partial class RdvViewModel : BillingCommandPageViewModel
+{
+    public override string SupportMessage => "Complétez les informations du rendez-vous puis postez la commande.";
+
+    [ObservableProperty]
+    public partial string Address { get; set; } = string.Empty;
+
+    [ObservableProperty]
+    public partial string SuggestedAddress { get; set; } = string.Empty;
+
+    [ObservableProperty]
+    public partial bool IsResolvingAddress { get; set; }
+
+    [ObservableProperty]
+    public partial double? Latitude { get; set; }
+
+    [ObservableProperty]
+    public partial double? Longitude { get; set; }
+
+
+    [ObservableProperty]
+    public partial DateTime EventDate { get; set; }
+
+    public DateTimeOffset? EventDateSelection
+    {
+        get => new(EventDate);
+        set
+        {
+            if (!value.HasValue)
+                return;
+
+            EventDate = value.Value.LocalDateTime;
+        }
+    }
+
+    public RdvViewModel(ActivityInfo activity, ActivityUserDisplayItem performer, CommandFormSummary form, BillingApiClient billingClient)
+        : base(activity, performer, form, billingClient)
+    {
+        EventDate = DateTime.Now.AddDays(1);
+    }
+
+    public bool HasSuggestedAddress => !string.IsNullOrWhiteSpace(SuggestedAddress);
+    public bool HasSuggestedAddressPanel => HasSuggestedAddress || IsResolvingAddress;
+
+    protected override void ApplyExistingQuery(BillingQueryDetailsDto existingQuery)
+    {
+        ExistingQueryId = existingQuery.Id;
+        CommandStatus = existingQuery.Status;
+        Consent = existingQuery.Consent;
+        Reason = existingQuery.Reason ?? string.Empty;
+        AdditionalInfo = existingQuery.AdditionalInfo ?? string.Empty;
+
+        if (existingQuery.EventDate is not null)
+        {
+            EventDate = existingQuery.EventDate.Value
+                .ToLocalTime();
+        }
+
+        if (existingQuery.Location is not null)
+        {
+            Address = existingQuery.Location.Address ?? string.Empty;
+            SuggestedAddress = string.Empty;
+            Latitude = existingQuery.Location.Latitude;
+            Longitude = existingQuery.Location.Longitude;
+        }
+
+        this.SetInfoStatus($"Commande #{existingQuery.Id} chargée.");
+    }
+
+    [RelayCommand(CanExecute = nameof(CanUseCurrentLocation))]
+    private async Task UseCurrentLocationAsync()
+    {
+        if (!CanUseCurrentLocation)
+        {
+            return;
+        }
+
+        IsBusy = true;
+        try
+        {
+            var result = await Platform.TryGetCurrentLocationAsync(default).ConfigureAwait(true);
+            if (!result.IsSuccess || !result.Latitude.HasValue || !result.Longitude.HasValue)
+            {
+                this.SetWarningStatus(result.Message);
+                return;
+            }
+
+            Latitude = result.Latitude.Value;
+            Longitude = result.Longitude.Value;
+            this.SetInfoStatus(string.IsNullOrWhiteSpace(Address)
+                ? "Position récupérée. Complétez l'adresse puis envoyez la commande."
+                : result.Message);
+        }
+        catch (OperationCanceledException)
+        {
+            this.SetWarningStatus("La récupération de la position a été annulée.");
+        }
+        catch (Exception ex)
+        {
+            this.SetErrorStatus($"Impossible de récupérer la position: {ex.Message}");
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+
+    protected static object BuildLocationPayload(string address, double? latitude, double? longitude)
+    {
+        if (latitude.HasValue && longitude.HasValue)
+        {
+            return new
+            {
+                Address = address,
+                Latitude = latitude.Value,
+                Longitude = longitude.Value,
+            };
+        }
+
+        return new
+        {
+            Address = address,
+        };
+    }
+
+    public void ApplyLocationFromMap(double latitude, double longitude)
+    {
+        Latitude = Math.Round(latitude, 6);
+        Longitude = Math.Round(longitude, 6);
+
+        if (string.IsNullOrWhiteSpace(Address))
+        {
+            this.SetInfoStatus("Position sélectionnée sur la carte. Complétez l'adresse puis envoyez la commande.");
+            return;
+        }
+
+        this.SetInfoStatus("Position sélectionnée sur la carte.");
+    }
+
+    public void NotifyReverseGeocodingStarted()
+    {
+        IsResolvingAddress = true;
+        this.SetInfoStatus(string.IsNullOrWhiteSpace(Address)
+            ? "Recherche de l'adresse depuis la carte..."
+            : "Recherche d'une adresse suggérée..."
+        );
+    }
+
+    public void NotifyReverseGeocodingUnavailable()
+    {
+        IsResolvingAddress = false;
+        if (HasSuggestedAddress || !string.IsNullOrWhiteSpace(Address))
+            return;
+
+        this.SetInfoStatus("Position sélectionnée sur la carte. Complétez l'adresse puis envoyez la commande.");
+    }
+
+    public void ApplyResolvedAddress(string address)
+    {
+        if (string.IsNullOrWhiteSpace(address))
+            return;
+
+        var trimmedAddress = address.Trim();
+        if (string.IsNullOrWhiteSpace(Address))
+        {
+            Address = trimmedAddress;
+            SuggestedAddress = string.Empty;
+            IsResolvingAddress = false;
+            this.SetInfoStatus("Adresse mise à jour depuis la carte.");
+            return;
+        }
+
+        if (string.Equals(Address.Trim(), trimmedAddress, StringComparison.Ordinal))
+        {
+            SuggestedAddress = string.Empty;
+            IsResolvingAddress = false;
+            return;
+        }
+
+        SuggestedAddress = trimmedAddress;
+        IsResolvingAddress = false;
+        this.SetInfoStatus("Adresse suggérée depuis la carte. Appliquez-la si besoin.");
+    }
+
+    [RelayCommand(CanExecute = nameof(HasSuggestedAddress))]
+    private void ApplySuggestedAddress()
+    {
+        if (string.IsNullOrWhiteSpace(SuggestedAddress))
+            return;
+
+        Address = SuggestedAddress.Trim();
+        SuggestedAddress = string.Empty;
+        IsResolvingAddress = false;
+        this.SetInfoStatus("Adresse suggérée appliquée.");
+    }
+
+    partial void OnSuggestedAddressChanged(string value)
+    {
+        OnPropertyChanged(nameof(HasSuggestedAddress));
+        OnPropertyChanged(nameof(HasSuggestedAddressPanel));
+        ApplySuggestedAddressCommand.NotifyCanExecuteChanged();
+    }
+
+    partial void OnIsResolvingAddressChanged(bool value)
+    {
+        OnPropertyChanged(nameof(HasSuggestedAddressPanel));
+    }
+
+    partial void OnEventDateChanged(DateTime value)
+    {
+        OnPropertyChanged(nameof(EventDateSelection));
+    }
+
+
+    protected override async Task SubmitAsync()
+    {
+        if (!IsSupported)
+        {
+            this.SetWarningStatus(SupportMessage);
+            return;
+        }
+
+        if (!Consent)
+        {
+            this.SetWarningStatus("Le consentement est requis pour poster la commande.");
+            return;
+        }
+
+        if (string.IsNullOrWhiteSpace(Address))
+        {
+            this.SetWarningStatus("L'adresse du rendez-vous est requise.");
+            return;
+        }
+
+
+        if (string.IsNullOrWhiteSpace(Reason))
+        {
+            this.SetWarningStatus("Le motif du rendez-vous est requis.");
+            return;
+        }
+
+
+
+        IsBusy = true;
+        try
+        {
+            var address = Address.Trim();
+            var locationPayload = BuildLocationPayload(address, Latitude, Longitude);
+
+            var payload = new BillingQueryDetailsDto
+            {
+                Id = ExistingQueryId ?? 0,
+                BillingCode = Form.ActionName,
+                ActivityCode = Activity.Code,
+                PerformerId = Performer.PerformerId,
+                Consent = Consent,
+                EventDate = EventDate,
+                Status = CommandStatus,
+                Reason = Reason.Trim(),
+                AdditionalInfo = string.IsNullOrWhiteSpace(AdditionalInfo) ? string.Empty : AdditionalInfo.Trim(),
+                Location = new BillingLocationDto
+                {
+                    Address = address,
+                    Latitude = Latitude,
+                    Longitude = Longitude,
+                }
+            };
+
+            if (IsEditingExisting)
+            {
+                await _billingClient.UpdateAsync(Form.ActionName, ExistingQueryId!.Value, payload).ConfigureAwait(true);
+            }
+            else
+            {
+                await _billingClient.CreateAsync(Form.ActionName, new
+                {
+                    ActivityCode = Activity.Code,
+                    PerformerId = Performer.PerformerId,
+                    Consent,
+                    EventDate = EventDate,
+                    Location = locationPayload,
+                    Reason = payload.Reason,
+                    Status = payload.Status,
+                }).ConfigureAwait(true);
+            }
+
+            this.SetInfoStatus(IsEditingExisting
+                ? $"Commande #{ExistingQueryId} mise à jour sur {BillingRoute} pour {Performer.UserName}."
+                : $"Commande transmise sur {BillingRoute} pour {Performer.UserName}.");
+        }
+        catch (HttpRequestException ex) when (ex.StatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden)
+        {
+            this.SetWarningStatus("Accès refusé au billing (scope 'api'). Déconnectez puis reconnectez-vous.");
+        }
+        catch (Exception ex)
+        {
+            this.SetErrorStatus($"Erreur lors de l'envoi: {ex.Message}");
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+
+    public override Task LoadAsync()
+    {
+        return Task.CompletedTask;
+    }
+}

src/PostIt/PostIt/ViewModels/Layout/ActionStatusViewModelExtensions.cs

@@ -0,0 +1,32 @@
+namespace PostIt.ViewModels;
+
+public interface IActionStatusViewModel
+{
+    string StatusMessage { get; set; }
+    StatusNotice ActionStatus { get; set; }
+}
+
+public static class ActionStatusViewModelExtensions
+{
+    public static void SetInfoStatus(this IActionStatusViewModel viewModel, string message)
+        => viewModel.SetStatus(message, StatusSeverity.Info);
+
+    public static void SetWarningStatus(this IActionStatusViewModel viewModel, string message)
+        => viewModel.SetStatus(message, StatusSeverity.Warning);
+
+    public static void SetErrorStatus(this IActionStatusViewModel viewModel, string message)
+        => viewModel.SetStatus(message, StatusSeverity.Error);
+
+    public static void SetStatus(this IActionStatusViewModel viewModel, string message, StatusSeverity severity)
+    {
+        var normalizedMessage = string.IsNullOrWhiteSpace(message) ? "Pret." : message.Trim();
+
+        viewModel.StatusMessage = normalizedMessage;
+        viewModel.ActionStatus = severity switch
+        {
+            StatusSeverity.Error => StatusNotice.Error(normalizedMessage),
+            StatusSeverity.Warning => StatusNotice.Warning(normalizedMessage),
+            _ => StatusNotice.Info(normalizedMessage),
+        };
+    }
+}

src/PostIt/PostIt/ViewModels/Layout/HomePageViewModel.cs

@@ -32,7 +32,7 @@ public class HomePageViewModel : ViewModelBase
         OpenActivities = new AsyncRelayCommand(OpenActivitiesAsync);
 
     }
-    public IAsyncRelayCommand OpenBlogs { get; } = new AsyncRelayCommand(App.PushMainPageAsync);
+    public IAsyncRelayCommand OpenBlogs { get; } = new AsyncRelayCommand(App.PushBlogsPageAsync);
     public IAsyncRelayCommand OpenActivities { get; }
 
     private async Task OpenActivitiesAsync()

src/PostIt/PostIt/ViewModels/Layout/MainViewModel.cs

@@ -12,7 +12,7 @@ using PostIt.Helpers;
 
 namespace PostIt.ViewModels;
 
-public partial class MainViewModel : ViewModelBase
+public partial class MainViewModel : ViewModelBase, IActionStatusViewModel
 {
     /// <summary>Window/tab title. Cosmetic — bound by
     /// <c>MainPage.axaml</c> if at all. Not the post title.</summary>
@@ -54,6 +54,9 @@ public partial class MainViewModel : ViewModelBase
     [ObservableProperty]
     public partial string StatusMessage { get; set; }
 
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
+
     [ObservableProperty]
     public partial string SearchText { get; set; }
 
@@ -84,7 +87,7 @@ public partial class MainViewModel : ViewModelBase
                 Posts.Add(post);
             }
             ApplyFilter();
-            StatusMessage = $"Loaded {Posts.Count} posts.";
+            this.SetInfoStatus($"{Posts.Count} billet(s) chargé(s).");
         });
     }
 
@@ -104,7 +107,7 @@ public partial class MainViewModel : ViewModelBase
         // than to send a request the server will reject.
         if (string.IsNullOrWhiteSpace(DraftTitle))
         {
-            StatusMessage = "Title is required.";
+            this.SetWarningStatus("Le titre est obligatoire.");
             return;
         }
 
@@ -134,7 +137,7 @@ public partial class MainViewModel : ViewModelBase
                 if (created is not null)
                 {
                     SelectedPost = created;
-                    StatusMessage = $"Created post {created.Id}.";
+                    this.SetInfoStatus($"Billet {created.Id} créé.");
                 }
             }
             else
@@ -150,7 +153,7 @@ public partial class MainViewModel : ViewModelBase
                     DateModified = DateTime.UtcNow,
                 };
                 await BlogClient!.UpdatePostAsync(SelectedPost.Id, update);
-                StatusMessage = $"Saved post {SelectedPost.Id}.";
+                this.SetInfoStatus($"Billet {SelectedPost.Id} enregistré.");
             }
 
             await RefreshPostsAsync();
@@ -162,14 +165,14 @@ public partial class MainViewModel : ViewModelBase
     {
         if (SelectedPost is null || SelectedPost.Id == 0)
         {
-            StatusMessage = "Select an existing post before deleting.";
+            this.SetWarningStatus("Sélectionnez un billet existant avant suppression.");
             return;
         }
 
         await ExecuteAsync(async () =>
         {
             await BlogClient!.DeletePostAsync(SelectedPost.Id);
-            StatusMessage = $"Deleted post {SelectedPost.Id}.";
+            this.SetInfoStatus($"Billet {SelectedPost.Id} supprimé.");
             SelectedPost = null;
             await RefreshPostsAsync();
         });
@@ -194,7 +197,7 @@ public partial class MainViewModel : ViewModelBase
     {
         if (SelectedPost is null || SelectedPost.Id == 0)
         {
-            StatusMessage = "Sélectionnez un billet existant pour changer sa publication.";
+            this.SetWarningStatus("Sélectionnez un billet existant pour changer sa publication.");
             return;
         }
 
@@ -211,9 +214,9 @@ public partial class MainViewModel : ViewModelBase
             // locally flipped state until the round-trip
             // re-hydrates it.
             SelectedPost.IsPublished = publish;
-            StatusMessage = publish
+            this.SetInfoStatus(publish
                 ? $"Billet {SelectedPost.Id} publié."
-                : $"Billet {SelectedPost.Id} remis en brouillon.";
+                : $"Billet {SelectedPost.Id} remis en brouillon.");
         });
     }
 
@@ -247,7 +250,7 @@ public partial class MainViewModel : ViewModelBase
     {
         if (SelectedPost is null)
         {
-            StatusMessage = "Select an existing post before managing ACL.";
+            this.SetWarningStatus("Sélectionnez un billet existant avant de gérer l'ACL.");
             return;
         }
 
@@ -346,7 +349,7 @@ public partial class MainViewModel : ViewModelBase
         FilteredPosts = new ObservableCollection<BlogPostDto>();
         SelectedPost = null;
         IsBusy = false;
-        StatusMessage = "Ready";
+        this.SetInfoStatus("Prêt.");
         Settings = settings ?? new Settings();
         SearchText = Settings.SearchText;
         WindowTitle = "PostIt";
@@ -476,12 +479,12 @@ public partial class MainViewModel : ViewModelBase
         try
         {
             IsBusy = true;
-            StatusMessage = "Working...";
+            this.SetInfoStatus("Traitement en cours...");
             await action();
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Error: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         finally
         {

src/PostIt/PostIt/ViewModels/Layout/StatusNotice.cs

@@ -0,0 +1,35 @@
+namespace PostIt.ViewModels;
+
+public enum StatusSeverity
+{
+    Info,
+    Warning,
+    Error
+}
+
+public sealed class StatusNotice
+{
+    public string Message { get; }
+    public StatusSeverity Severity { get; }
+    public string Glyph { get; }
+    public string Background { get; }
+    public string BorderBrush { get; }
+    public string Foreground { get; }
+
+    private StatusNotice(string message, StatusSeverity severity)
+    {
+        Message = string.IsNullOrWhiteSpace(message) ? "Pret." : message;
+        Severity = severity;
+
+        (Glyph, Background, BorderBrush, Foreground) = severity switch
+        {
+            StatusSeverity.Error => ("!", "#FDECEA", "#C62828", "#7F1D1D"),
+            StatusSeverity.Warning => ("~", "#FFF8E1", "#E6A700", "#7C4A03"),
+            _ => ("i", "#E8F0FE", "#5B8DEF", "#1E3A8A"),
+        };
+    }
+
+    public static StatusNotice Info(string message) => new(message, StatusSeverity.Info);
+    public static StatusNotice Warning(string message) => new(message, StatusSeverity.Warning);
+    public static StatusNotice Error(string message) => new(message, StatusSeverity.Error);
+}

src/PostIt/PostIt/ViewModels/RemoteViewModelBase.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+
+namespace PostIt.ViewModels;
+
+public abstract class RemoteViewModelBase : ViewModelBase
+{
+     public abstract Task LoadAsync();
+
+
+}

src/PostIt/PostIt/ViewModels/Settings/Settings.cs

@@ -7,6 +7,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Net.Http;
 using System.Text.Json;
+using System.Text.Json.Serialization;
 
 [assembly: InternalsVisibleTo("PostIt.Tests")]
 
@@ -26,11 +27,25 @@ public partial class Settings : ViewModelBase
     public partial string BlogsApiUrl { get; set; } = "https://blogs.pschneider.fr/api/v1/";
 
     [ObservableProperty]
-    public partial string BusinessApiUrl { get; set; } = "https://api.pschneider.fr/api/v1/";
+    public partial string ApiUrl { get; set; } = "https://api.pschneider.fr/api/v1/";
 
     [ObservableProperty]
     public partial string SearchText { get; set; } = string.Empty;
 
+    [ObservableProperty]
+    [JsonIgnore]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Pret.");
+
+    public void SetActionStatus(string message, StatusSeverity severity = StatusSeverity.Info)
+    {
+        ActionStatus = severity switch
+        {
+            StatusSeverity.Error => StatusNotice.Error(message),
+            StatusSeverity.Warning => StatusNotice.Warning(message),
+            _ => StatusNotice.Info(message),
+        };
+    }
+
     /// <summary>
     /// Catch top-level mutations: the four ObservableProperty
     /// setters above all funnel through here, and we flip
@@ -45,7 +60,7 @@ public partial class Settings : ViewModelBase
 
     partial void OnDarkModeChanged(bool value) => MarkDirty();
     partial void OnBlogsApiUrlChanged(string value) => MarkDirty();
-    partial void OnBusinessApiUrlChanged(string value) => MarkDirty();
+    partial void OnApiUrlChanged(string value) => MarkDirty();
     partial void OnSearchTextChanged(string value) => MarkDirty();
 
     /// <summary>
@@ -110,6 +125,8 @@ public partial class Settings : ViewModelBase
         // build options from a torn read.
         lock (_mutationGate)
         {
+            EnsureAuthenticationDefaultsLocked();
+
             var options = new OidcClientOptions
             {
                 Authority = Authentication.Authority,
@@ -138,6 +155,25 @@ public partial class Settings : ViewModelBase
         }
     }
 
+    private void EnsureAuthenticationDefaultsLocked()
+    {
+        Authentication ??= new AuthenticationSettings();
+
+        if (string.IsNullOrWhiteSpace(Authentication.Authority))
+            Authentication.Authority = AuthenticationSettings.DefaultAuthority;
+
+        if (string.IsNullOrWhiteSpace(Authentication.ClientId))
+            Authentication.ClientId = AuthenticationSettings.DefaultClientId;
+
+        if (string.IsNullOrWhiteSpace(Authentication.RedirectUri))
+            Authentication.RedirectUri = AuthenticationSettings.DesktopRedirectUri;
+
+        if (Authentication.Scopes is null || Authentication.Scopes.Length == 0)
+            Authentication.Scopes = AuthenticationSettings.DefaultScopes;
+
+        Authentication.RefreshScopeListText();
+    }
+
     /// <summary>
     /// Scopes the PostIt client always requires from the OIDC provider,
     /// regardless of what the user has in their settings file.
@@ -306,9 +342,9 @@ public partial class Settings : ViewModelBase
                 this.BlogsApiUrl = !string.IsNullOrWhiteSpace(settings.BlogsApiUrl)
                     ? settings.BlogsApiUrl
                     : legacyApiUrl ?? this.BlogsApiUrl;
-                this.BusinessApiUrl = !string.IsNullOrWhiteSpace(settings.BusinessApiUrl)
+                this.ApiUrl = !string.IsNullOrWhiteSpace(settings.ApiUrl)
-                    ? settings.BusinessApiUrl
+                    ? settings.ApiUrl
-                    : this.BusinessApiUrl;
+                    : this.ApiUrl;
                 this.SearchText = settings.SearchText ?? string.Empty;
                 if (!(settings.Authentication is null))
                 {
@@ -321,11 +357,13 @@ public partial class Settings : ViewModelBase
                      AuthenticationSettings.DesktopRedirectUri : settings.Authentication.RedirectUri;
                     if (settings.Authentication.Scopes is null || settings.Authentication.Scopes.Length == 0)
                     {
-                        settings.Authentication.Scopes = AuthenticationSettings.DefaultScopes;
+                        this.Authentication.Scopes = AuthenticationSettings.DefaultScopes;
                     }
                     else
                         this.Authentication.Scopes = settings.Authentication.Scopes;
                 }
+
+                EnsureAuthenticationDefaultsLocked();
             }
             // A disk load (or an embedded-resource fallback) is the
             // baseline, not a user edit. Clear the dirty flag last
@@ -384,7 +422,7 @@ public partial class Settings : ViewModelBase
         };
         this.DarkMode = false;
         this.BlogsApiUrl = "https://blogs.pschneider.fr/api/v1/";
-        this.BusinessApiUrl = "https://api.pschneider.fr/api/v1/";
+        this.ApiUrl = "https://api.pschneider.fr/api/v1/";
         this.SearchText = string.Empty;
     }
 
@@ -406,6 +444,8 @@ public partial class Settings : ViewModelBase
     [RelayCommand(CanExecute = nameof(CanSave))]
     public void Save()
     {
+        SetActionStatus("Enregistrement des parametres...", StatusSeverity.Info);
+
         var configDir = Path.Combine(
             Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
             "PostIt");
@@ -425,10 +465,13 @@ public partial class Settings : ViewModelBase
                     File.SetUnixFileMode(configPath,
                         UnixFileMode.UserRead | UnixFileMode.UserWrite);
                 IsDirty = false;
+                SetActionStatus("Parametres sauvegardes.", StatusSeverity.Info);
+                
                 Console.WriteLine($"💾 Settings saved to {configPath}");
             }
             catch (Exception ex)
             {
+                SetActionStatus($"Echec sauvegarde parametres: {ex.Message}", StatusSeverity.Error);
                 Console.Error.WriteLine($"🩎 Error saving settings to {configPath}: {ex.Message}");
                 throw;
             }

src/PostIt/PostIt/ViewModels/Signature/SignaturePageViewModel.cs

@@ -30,7 +30,7 @@ namespace PostIt.ViewModels;
 /// until the Yavsc.Org endpoint exists; the contract there will
 /// be <c>POST /api/signature/{devisId}</c> with this same payload.
 /// </summary>
-public partial class SignaturePageViewModel : ViewModelBase
+public partial class SignaturePageViewModel : ViewModelBase, IActionStatusViewModel
 {
     /// <summary>
     /// Default capture surface, in DIPs. 3:1 ratio matches a
@@ -42,6 +42,9 @@ public partial class SignaturePageViewModel : ViewModelBase
     [ObservableProperty]
     public partial string StatusMessage { get; set; } = "Prêt.";
 
+    [ObservableProperty]
+    public partial StatusNotice ActionStatus { get; set; } = StatusNotice.Info("Prêt.");
+
     [ObservableProperty]
     public partial int StrokeCount { get; set; }
 
@@ -107,7 +110,7 @@ public partial class SignaturePageViewModel : ViewModelBase
 
     private void OnStrokeCompleted(object? sender, SignaturePadData data)
     {
-        StatusMessage = $"Trait terminé. {data.StrokeCount} trait(s).";
+        this.SetInfoStatus($"Trait terminé. {data.StrokeCount} trait(s).");
         RefreshCounts();
     }
 
@@ -125,7 +128,7 @@ public partial class SignaturePageViewModel : ViewModelBase
     public void Clear()
     {
         _control?.Clear();
-        StatusMessage = "Effacé.";
+        this.SetInfoStatus("Effacé.");
         RefreshCounts();
     }
 
@@ -134,14 +137,14 @@ public partial class SignaturePageViewModel : ViewModelBase
     {
         if (_control is null)
         {
-            StatusMessage = "Contrôle non attaché.";
+            this.SetWarningStatus("Contrôle non attaché.");
             return;
         }
 
         var data = _control.Snapshot();
         if (data.IsEmpty)
         {
-            StatusMessage = "Rien à capturer.";
+            this.SetWarningStatus("Rien à capturer.");
             return;
         }
 
@@ -149,11 +152,11 @@ public partial class SignaturePageViewModel : ViewModelBase
         {
             var path = WriteCapture(data);
             LastCapturedPath = path;
-            StatusMessage = $"Capture enregistrée: {path}";
+            this.SetInfoStatus($"Capture enregistrée: {path}");
         }
         catch (Exception ex)
         {
-            StatusMessage = $"Erreur: {ex.Message}";
+            this.SetErrorStatus($"Erreur: {ex.Message}");
         }
         await Task.CompletedTask;
     }

src/PostIt/PostIt/ViewModels/ViewModelBase.cs

@@ -1,8 +1,8 @@
-using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace PostIt.ViewModels;
 
-public abstract partial class ViewModelBase : ObservableObject
+public abstract class ViewModelBase : ObservableObject
 {
      /// <summary>
     /// Gets if the user can navigate to the next page

src/PostIt/PostIt/Views/ACL/AddCircleMemberDialog.axaml

@@ -3,6 +3,7 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         x:Class="PostIt.Views.AddCircleMemberDialog"
         xmlns:vm="using:PostIt.ViewModels"
+    xmlns:postitControls="using:PostIt.Controls"
         xmlns:services="using:PostIt.Services"
         x:DataType="vm:AddCircleMemberDialogViewModel"
       >
@@ -47,8 +48,8 @@
 
         <!-- Action buttons -->
         <Grid Grid.Row="3" ColumnDefinitions="*,Auto,Auto" Margin="0,8,0,0">
-            <TextBlock Grid.Column="0" Text="{Binding StatusMessage}"
+            <postitControls:StatusBar Grid.Column="0"
-                       VerticalAlignment="Center"/>
+                                      DataContext="{Binding ActionStatus}" />
             <Button Grid.Column="1" Content="Ajouter"
                     x:Name="AddButton"
                     Command="{Binding AddAsync}"

src/PostIt/PostIt/Views/ACL/AddCircleMemberDialog.axaml.cs

@@ -1,10 +1,8 @@
 
 using Avalonia.Markup.Xaml;
-using Avalonia.Interactivity;
 using Avalonia.VisualTree;
 using PostIt.Services;
 using PostIt.ViewModels;
-using System.Threading.Tasks;
 
 namespace PostIt.Views;
 
@@ -41,10 +39,4 @@ public partial class AddCircleMemberDialog : Avalonia.Controls.ContentPage
     /// </summary>
     public AddCircleMemberDialogViewModel? ViewModel
         => DataContext as AddCircleMemberDialogViewModel;
-
-    private async Task OnCloseClicked(object? sender, RoutedEventArgs e)
-    {
-        App app = App.Current! as App;
-        await app!.GoBackAsync();
-    }
 }

src/PostIt/PostIt/Views/ACL/CirclesPage.axaml

@@ -1,6 +1,7 @@
 <ContentPage
         xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:postitControls="using:PostIt.Controls"
         x:Class="PostIt.Views.CirclesPage"
         xmlns:vm="using:PostIt.ViewModels"
         xmlns:dtos="using:Yavsc.Api.Client.Dtos"
@@ -101,8 +102,8 @@
 
         <!-- Status bar -->
         <Grid Grid.Row="2" ColumnDefinitions="*,Auto" Margin="12,0,12,12">
-            <TextBlock Grid.Column="0" Text="{Binding StatusMessage}"
+            <postitControls:StatusBar Grid.Column="0"
-                       VerticalAlignment="Center"/>
+                                      DataContext="{Binding ActionStatus}" />
             <ProgressBar Grid.Column="1" IsIndeterminate="True"
                          IsVisible="{Binding IsBusy}"
                          Width="120"/>

src/PostIt/PostIt/Views/ACL/PostAclDialog.axaml

@@ -3,6 +3,7 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         x:Class="PostIt.Views.PostAclDialog"
         xmlns:vm="using:PostIt.ViewModels"
+    xmlns:postitControls="using:PostIt.Controls"
                 xmlns:dtos="using:Yavsc.Api.Client.Dtos"
         x:DataType="vm:PostAclDialogViewModel"
       >
@@ -53,8 +54,8 @@
 
         <!-- Status bar -->
         <Grid Grid.Row="3" ColumnDefinitions="*,Auto">
-            <TextBlock Grid.Column="0" Text="{Binding StatusMessage}"
+            <postitControls:StatusBar Grid.Column="0"
-                       VerticalAlignment="Center"/>
+                                      DataContext="{Binding ActionStatus}" />
             <ProgressBar Grid.Column="1" IsIndeterminate="True"
                          IsVisible="{Binding IsBusy}"
                          Width="120"/>

src/PostIt/PostIt/Views/Activity/ActivitiesPage.axaml

@@ -1,6 +1,7 @@
 <ContentPage xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:vm="using:PostIt.ViewModels"
+             xmlns:postitControls="using:PostIt.Controls"
              xmlns:wf="using:Yavsc.Abstract.Workflow"
              x:Class="PostIt.Views.ActivitiesPage"
              x:DataType="vm:ActivitiesPageViewModel"
@@ -21,8 +22,8 @@
         </Grid.Styles>
 
         <StackPanel Grid.Row="0" Orientation="Horizontal" Spacing="8">
-            <Button Content="Rafraîchir" Command="{Binding RefreshCommand}" />
+            <Button Content="🗘 Rafraîchir" Command="{Binding RefreshCommand}" />
-            <TextBlock Text="Catalogue des activités" FontWeight="Bold" VerticalAlignment="Center" />
+            <TextBlock Text="📑 Catalogue des activités" FontWeight="Bold" VerticalAlignment="Center" />
         </StackPanel>
 
         <Grid Grid.Row="1" Margin="0,12,0,12" ColumnDefinitions="*,16,*,16,*">
@@ -32,7 +33,7 @@
                          ItemsSource="{Binding Activities}"
                          SelectedItem="{Binding SelectedActivity, Mode=TwoWay}">
                     <ListBox.ItemTemplate>
-                        <DataTemplate x:DataType="wf:ActivityBrowseItemDto">
+                        <DataTemplate x:DataType="wf:ActivityInfo">
                             <StackPanel Spacing="2" Margin="0,0,0,8">
                                 <TextBlock Text="{Binding Name}" FontWeight="Bold" />
                                 <TextBlock Text="{Binding Description}" TextWrapping="Wrap" FontSize="11" Opacity="0.7" />
@@ -53,7 +54,7 @@
                          ItemsSource="{Binding Specializations}"
                          SelectedItem="{Binding SelectedSpecialization, Mode=TwoWay}">
                     <ListBox.ItemTemplate>
-                        <DataTemplate x:DataType="wf:ActivityBrowseItemDto">
+                        <DataTemplate x:DataType="wf:ActivityInfo">
                             <StackPanel Spacing="2" Margin="0,0,0,8">
                                 <TextBlock Text="{Binding Name}" FontWeight="Bold" />
                                 <TextBlock Text="{Binding Description}" TextWrapping="Wrap" FontSize="11" Opacity="0.7" />
@@ -76,7 +77,24 @@
                     <ListBox.ItemTemplate>
                         <DataTemplate x:DataType="vm:ActivityUserDisplayItem">
                             <StackPanel Spacing="2" Margin="0,0,0,8">
-                                <StackPanel Orientation="Horizontal" Spacing="4">
+                                <StackPanel Orientation="Horizontal" Spacing="6" VerticalAlignment="Center">
+                                    <Border Width="24"
+                                            Height="24"
+                                            CornerRadius="12"
+                                            ClipToBounds="True"
+                                            Background="#E9ECEF">
+                                        <Grid>
+                                            <TextBlock Text="{Binding AvatarFallbackLabel}"
+                                                       HorizontalAlignment="Center"
+                                                       VerticalAlignment="Center"
+                                                       FontWeight="SemiBold"
+                                                       Foreground="#495057" />
+                                            <Image Source="{Binding AvatarImage}"
+                                                   Width="24"
+                                                   Height="24"
+                                                   Stretch="UniformToFill" />
+                                        </Grid>
+                                    </Border>
                                     <TextBlock Text="{Binding UserName}" FontWeight="Bold" />
                                     <Border IsVisible="{Binding HasPerformerProfile}"
                                             Classes="user-badge"
@@ -114,16 +132,8 @@
         </Grid>
 
         <Grid Grid.Row="2" ColumnDefinitions="*,Auto">
-            <TextBox Grid.Column="0"
+            <postitControls:StatusBar Grid.Column="0"
-                     Text="{Binding StatusMessage}"
+                                      DataContext="{Binding ActionStatus}" />
-                     IsReadOnly="True"
-                     AcceptsReturn="True"
-                     TextWrapping="Wrap"
-                     BorderThickness="0"
-                     BorderBrush="Transparent"
-                     Padding="0"
-                     Background="Transparent"
-                     VerticalAlignment="Center" />
             <ProgressBar Grid.Column="1" Width="120" IsIndeterminate="True" IsVisible="{Binding IsBusy}" />
         </Grid>
     </Grid>

src/PostIt/PostIt/Views/Activity/BillingQueriesPage.axaml

@@ -0,0 +1,90 @@
+<ContentPage xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:PostIt.ViewModels"
+             xmlns:postitControls="using:PostIt.Controls"
+             x:Class="PostIt.Views.BillingQueriesPage"
+             x:DataType="vm:BillingQueriesPageViewModel"
+             Header="Commandes billing">
+    <Grid RowDefinitions="Auto,Auto,Auto,*,Auto" Margin="12">
+        <StackPanel Grid.Row="0" Spacing="3">
+            <TextBlock Text="{Binding Title}" FontSize="20" FontWeight="Bold" />
+            <TextBlock Text="{Binding ContextLabel}" Opacity="0.75" />
+        </StackPanel>
+
+        <Grid Grid.Row="1" Margin="0,10,0,0" ColumnDefinitions="Auto,8,Auto,8,*">
+            <Border Grid.Column="0" Background="#EAF3FF" BorderBrush="#2A5EA8" BorderThickness="1" CornerRadius="6" Padding="8,3">
+                <TextBlock Text="{Binding IsReadOnly, StringFormat='Lecture seule : {0}'}" FontSize="11" />
+            </Border>
+            <Border Grid.Column="2" Background="#F2F7F2" BorderBrush="#2F6D2F" BorderThickness="1" CornerRadius="6" Padding="8,3">
+                <TextBlock Text="{Binding OngoingOnly, StringFormat='En cours uniquement : {0}'}" FontSize="11" />
+            </Border>
+            <TextBlock Grid.Column="4"
+                       HorizontalAlignment="Right"
+                       VerticalAlignment="Center"
+                       Text="{Binding Queries.Count, StringFormat='Résultats : {0}'}"
+                       Opacity="0.7" />
+        </Grid>
+
+        <Grid Grid.Row="2" ColumnDefinitions="Auto,8,Auto,*" Margin="0,12,0,12">
+            <Button Grid.Column="0" Content="Rafraîchir" Command="{Binding RefreshCommand}" />
+            <Button Content="Voir le detail"
+                    Grid.Column="2"
+                    Command="{Binding OpenSelectedQueryCommand}"
+                    IsVisible="{Binding CanOpenDetails}" />
+        </Grid>
+
+        <ListBox Grid.Row="3"
+                 ItemsSource="{Binding Queries}"
+                 SelectedItem="{Binding SelectedQuery, Mode=TwoWay}">
+            <ListBox.ItemTemplate>
+                <DataTemplate x:DataType="vm:BillingQueryDisplayItem">
+                    <Border BorderThickness="1"
+                            BorderBrush="#22000000"
+                            CornerRadius="8"
+                            Padding="10"
+                            Margin="0,0,0,8">
+                        <Grid RowDefinitions="Auto,Auto,Auto" ColumnDefinitions="*,Auto">
+                            <TextBlock Grid.Row="0"
+                                       Grid.Column="0"
+                                       Text="{Binding Description}"
+                                       FontWeight="Bold"
+                                       TextWrapping="Wrap" />
+                            <TextBlock Grid.Row="0"
+                                       Grid.Column="1"
+                                       Text="{Binding StatusLabel}"
+                                       FontSize="11"
+                                       Opacity="0.75"
+                                       HorizontalAlignment="Right" />
+
+                            <TextBlock Grid.Row="1"
+                                       Grid.ColumnSpan="2"
+                                       Margin="0,4,0,0"
+                                       Text="{Binding Summary}"
+                                       TextWrapping="Wrap"
+                                       FontSize="12"
+                                       Opacity="0.85" />
+
+                            <Grid Grid.Row="2" Grid.ColumnSpan="2" ColumnDefinitions="*,Auto" Margin="0,8,0,0">
+                                <TextBlock Grid.Column="0"
+                                           Text="{Binding EventDateLabel, StringFormat='Date : {0}'}"
+                                           FontSize="11"
+                                           Opacity="0.7" />
+                                <TextBlock Grid.Column="1"
+                                           Text="{Binding BillingCode, StringFormat='Code : {0}'}"
+                                           FontSize="11"
+                                           Opacity="0.65"
+                                           HorizontalAlignment="Right" />
+                            </Grid>
+                        </Grid>
+                    </Border>
+                </DataTemplate>
+            </ListBox.ItemTemplate>
+        </ListBox>
+
+        <Grid Grid.Row="4" ColumnDefinitions="*,Auto" Margin="0,12,0,0">
+            <postitControls:StatusBar Grid.Column="0"
+                                      DataContext="{Binding ActionStatus}" />
+            <ProgressBar Grid.Column="1" Width="120" IsIndeterminate="True" IsVisible="{Binding IsBusy}" />
+        </Grid>
+    </Grid>
+</ContentPage>

src/PostIt/PostIt/Views/Activity/BillingQueryDetailsPage.axaml

@@ -0,0 +1,131 @@
+<ContentPage xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:PostIt.ViewModels"
+             xmlns:postitControls="using:PostIt.Controls"
+             x:Class="PostIt.Views.BillingQueryDetailsPage"
+             x:DataType="vm:BillingQueryDetailsPageViewModel"
+             Header="Detail commande">
+    <Grid RowDefinitions="Auto,Auto,*,Auto" Margin="12">
+        <StackPanel Grid.Row="0" Spacing="4">
+            <TextBlock Text="{Binding Title}"
+                       FontSize="20"
+                       FontWeight="Bold"
+                       Foreground="{Binding TitleForeground}" />
+            <TextBlock Text="{Binding ContextLabel}" Opacity="0.75" />
+        </StackPanel>
+
+        <Grid Grid.Row="1" Margin="0,10,0,0" ColumnDefinitions="Auto,8,Auto,*">
+            <Button Grid.Column="0"
+                    Content="Retour"
+                    Command="{Binding BackCommand}" />
+            <Button Grid.Column="2"
+                    Content="Ouvrir en edition"
+                    Command="{Binding OpenEditorCommand}"
+                    IsVisible="{Binding CanEdit}" />
+        </Grid>
+
+        <ScrollViewer Grid.Row="2" Margin="0,12,0,12">
+            <StackPanel Spacing="10">
+                <Border BorderThickness="1"
+                        BorderBrush="#22000000"
+                        CornerRadius="8"
+                        Padding="10">
+                    <Grid ColumnDefinitions="Auto,12,*" RowDefinitions="Auto,Auto" RowSpacing="8">
+                        <TextBlock Grid.Row="0" Grid.Column="0" Text="Statut" FontWeight="SemiBold" />
+                        <Border Grid.Row="0"
+                                Grid.Column="2"
+                                Background="{Binding StatusBadgeBackground}"
+                                BorderBrush="{Binding StatusBadgeBorder}"
+                                BorderThickness="1"
+                                CornerRadius="6"
+                                Padding="8,3"
+                                HorizontalAlignment="Left">
+                            <StackPanel Orientation="Horizontal" Spacing="6">
+                                <TextBlock Text="{Binding StatusGlyph}"
+                                           Foreground="{Binding StatusBadgeForeground}"
+                                           FontWeight="Bold" />
+                                <TextBlock Text="{Binding StatusLabel}"
+                                           Foreground="{Binding StatusBadgeForeground}"
+                                           FontWeight="SemiBold" />
+                            </StackPanel>
+                        </Border>
+
+                        <TextBlock Grid.Row="1" Grid.Column="0" Text="Date" FontWeight="SemiBold" />
+                        <TextBlock Grid.Row="1" Grid.Column="2" Text="{Binding EventDateLabel}" />
+                    </Grid>
+                </Border>
+
+                <Border BorderThickness="1"
+                        BorderBrush="#22000000"
+                        CornerRadius="8"
+                        Padding="10">
+                    <Grid ColumnDefinitions="Auto,12,*" RowDefinitions="Auto,Auto,Auto,Auto" RowSpacing="8">
+                        <TextBlock Grid.Row="0" Grid.Column="0" Text="Description" FontWeight="SemiBold" />
+                        <TextBlock Grid.Row="0" Grid.Column="2" Text="{Binding Description}" TextWrapping="Wrap" />
+
+                        <TextBlock Grid.Row="1" Grid.Column="0" Text="Motif" FontWeight="SemiBold" />
+                        <TextBlock Grid.Row="1" Grid.Column="2" Text="{Binding Reason}" TextWrapping="Wrap" />
+
+                        <TextBlock Grid.Row="2" Grid.Column="0" Text="Infos" FontWeight="SemiBold" />
+                        <TextBlock Grid.Row="2" Grid.Column="2" Text="{Binding AdditionalInfo}" TextWrapping="Wrap" />
+
+                        <TextBlock Grid.Row="3" Grid.Column="0" Text="Consentement" FontWeight="SemiBold" />
+                        <TextBlock Grid.Row="3" Grid.Column="2" Text="{Binding ConsentLabel}" />
+                    </Grid>
+                </Border>
+
+                <Expander Header="Metadonnees techniques"
+                          IsExpanded="False">
+                    <Border BorderThickness="1"
+                            BorderBrush="#22000000"
+                            CornerRadius="8"
+                            Padding="10"
+                            Margin="0,6,0,0">
+                        <Grid ColumnDefinitions="Auto,12,*" RowDefinitions="Auto,Auto,Auto,Auto,Auto" RowSpacing="8">
+                            <TextBlock Grid.Row="0" Grid.Column="0" Text="Code" FontWeight="SemiBold" />
+                            <TextBlock Grid.Row="0"
+                                       Grid.Column="2"
+                                       Text="{Binding BillingCode}"
+                                       FontFamily="Consolas, Courier New, monospace" />
+
+                            <TextBlock Grid.Row="1" Grid.Column="0" Text="Client" FontWeight="SemiBold" />
+                            <TextBlock Grid.Row="1"
+                                       Grid.Column="2"
+                                       Text="{Binding ClientId}"
+                                       FontFamily="Consolas, Courier New, monospace" />
+
+                            <TextBlock Grid.Row="2" Grid.Column="0" Text="Provision" FontWeight="SemiBold" />
+                            <TextBlock Grid.Row="2"
+                                       Grid.Column="2"
+                                       Text="{Binding ProvisionalLabel}"
+                                       FontFamily="Consolas, Courier New, monospace" />
+
+                            <TextBlock Grid.Row="3" Grid.Column="0" Text="Lieu" FontWeight="SemiBold" />
+                            <TextBlock Grid.Row="3"
+                                       Grid.Column="2"
+                                       Text="{Binding LocationLabel}"
+                                       TextWrapping="Wrap"
+                                       FontFamily="Consolas, Courier New, monospace" />
+
+                            <TextBlock Grid.Row="4" Grid.Column="0" Text="Prestations" FontWeight="SemiBold" />
+                            <TextBlock Grid.Row="4"
+                                       Grid.Column="2"
+                                       Text="{Binding PrestationsLabel}"
+                                       TextWrapping="Wrap"
+                                       FontFamily="Consolas, Courier New, monospace" />
+                        </Grid>
+                    </Border>
+                </Expander>
+            </StackPanel>
+        </ScrollViewer>
+
+        <Grid Grid.Row="3" ColumnDefinitions="*,Auto" Margin="0,8,0,0">
+            <postitControls:StatusBar Grid.Column="0"
+                                      DataContext="{Binding ActionStatus}" />
+            <ProgressBar Grid.Column="1"
+                         Width="120"
+                         IsIndeterminate="True"
+                         IsVisible="{Binding IsBusy}" />
+        </Grid>
+    </Grid>
+</ContentPage>

src/PostIt/PostIt/Views/Activity/BillingQueryDetailsPage.axaml.cs

@@ -3,9 +3,9 @@ using Avalonia.Markup.Xaml;
 
 namespace PostIt.Views;
 
-public partial class BillingCommandPage : ContentPage
+public partial class BillingQueryDetailsPage : ContentPage
 {
-    public BillingCommandPage()
+    public BillingQueryDetailsPage()
     {
         InitializeComponent();
     }

src/PostIt/PostIt/Views/Activity/CommandFormsPage.axaml

@@ -1,6 +1,7 @@
 <ContentPage xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:vm="using:PostIt.ViewModels"
+             xmlns:postitControls="using:PostIt.Controls"
              xmlns:wf="using:Yavsc.Abstract.Workflow"
              x:Class="PostIt.Views.CommandFormsPage"
              x:DataType="vm:CommandFormsPageViewModel"
@@ -20,7 +21,7 @@
                  ItemsSource="{Binding Forms}"
                  SelectedItem="{Binding SelectedForm, Mode=TwoWay}">
             <ListBox.ItemTemplate>
-                <DataTemplate x:DataType="wf:CommandFormSummaryDto">
+                <DataTemplate x:DataType="wf:CommandFormSummary">
                     <StackPanel Spacing="2" Margin="0,0,0,10">
                         <TextBlock Text="{Binding Title}" FontWeight="Bold" />
                         <TextBlock Text="{Binding ActionName, StringFormat='Route billing : /billing/{0}'}"
@@ -41,16 +42,8 @@
             <Button Grid.Column="4"
                     Content="Demandes en cours (lecture seule)"
                     Command="{Binding OpenOngoingQueriesCommand}" />
-            <TextBox Grid.Column="6"
+            <postitControls:StatusBar Grid.Column="6"
-                     Text="{Binding StatusMessage}"
+                                      DataContext="{Binding ActionStatus}" />
-                     IsReadOnly="True"
-                     AcceptsReturn="True"
-                     TextWrapping="Wrap"
-                     BorderThickness="0"
-                     BorderBrush="Transparent"
-                     Padding="0"
-                     Background="Transparent"
-                     VerticalAlignment="Center" />
         </Grid>
     </Grid>
 </ContentPage>

src/PostIt/PostIt/Views/BillingCommandPage.axaml

@@ -1,131 +0,0 @@
-<ContentPage xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:vm="using:PostIt.ViewModels"
-             x:Class="PostIt.Views.BillingCommandPage"
-             x:DataType="vm:BillingCommandPageViewModel"
-             Header="Commande billing">
-    <ScrollViewer>
-        <Grid RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto" ColumnDefinitions="Auto,*" Margin="12">
-            <TextBlock Grid.Row="0" Grid.ColumnSpan="2"
-                       Text="{Binding Title}"
-                       FontSize="18"
-                       FontWeight="Bold" />
-
-            <TextBlock Grid.Row="1" Grid.ColumnSpan="2"
-                       Margin="0,4,0,12"
-                       Text="{Binding SupportMessage}"
-                       TextWrapping="Wrap"
-                       Opacity="0.8" />
-
-            <TextBlock Grid.Row="2" Text="Utilisateur" VerticalAlignment="Center" Margin="0,0,12,8" />
-            <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding PerformerLabel}" IsReadOnly="True" Margin="0,0,0,8" />
-
-            <TextBlock Grid.Row="3" Text="Activité" VerticalAlignment="Center" Margin="0,0,12,8" />
-            <TextBox Grid.Row="3" Grid.Column="1" Text="{Binding ActivityLabel}" IsReadOnly="True" Margin="0,0,0,8" />
-
-            <TextBlock Grid.Row="4" Text="Date" VerticalAlignment="Center" Margin="0,0,12,8" />
-            <TextBox Grid.Row="4" Grid.Column="1" Text="{Binding EventDateText, Mode=TwoWay}" Margin="0,0,0,8" />
-
-            <TextBlock Grid.Row="5"
-                       Text="Motif"
-                       VerticalAlignment="Center"
-                       Margin="0,0,12,8"
-                       IsVisible="{Binding ShowsReason}" />
-            <TextBox Grid.Row="5"
-                     Grid.Column="1"
-                     Text="{Binding Reason, Mode=TwoWay}"
-                     Margin="0,0,0,8"
-                     IsVisible="{Binding ShowsReason}" />
-
-            <TextBlock Grid.Row="6" Text="Adresse" VerticalAlignment="Center" Margin="0,0,12,8" />
-            <TextBox Grid.Row="6" Grid.Column="1" Text="{Binding Address, Mode=TwoWay}" Margin="0,0,0,8" />
-
-            <TextBlock Grid.Row="7" Text="Latitude" VerticalAlignment="Center" Margin="0,0,12,8" />
-            <TextBox Grid.Row="7" Grid.Column="1" Text="{Binding LatitudeText, Mode=TwoWay}" Margin="0,0,0,8" />
-
-            <TextBlock Grid.Row="8" Text="Longitude" VerticalAlignment="Center" Margin="0,0,12,8" />
-            <TextBox Grid.Row="8" Grid.Column="1" Text="{Binding LongitudeText, Mode=TwoWay}" Margin="0,0,0,8" />
-
-            <TextBlock Grid.Row="9"
-                       Text="Prestation"
-                       VerticalAlignment="Center"
-                       Margin="0,0,12,8"
-                       IsVisible="{Binding ShowsSinglePrestation}" />
-            <ComboBox Grid.Row="9"
-                      Grid.Column="1"
-                      ItemsSource="{Binding AvailablePrestations}"
-                      SelectedItem="{Binding SelectedPrestation, Mode=TwoWay}"
-                      Margin="0,0,0,8"
-                      IsVisible="{Binding ShowsSinglePrestation}">
-                <ComboBox.ItemTemplate>
-                    <DataTemplate>
-                        <StackPanel Spacing="2">
-                            <TextBlock Text="{Binding Title}" FontWeight="Bold" />
-                            <TextBlock Text="{Binding Details}" FontSize="11" Opacity="0.7" TextWrapping="Wrap" />
-                        </StackPanel>
-                    </DataTemplate>
-                </ComboBox.ItemTemplate>
-            </ComboBox>
-
-            <TextBlock Grid.Row="10"
-                       Text="Prestations"
-                       VerticalAlignment="Top"
-                       Margin="0,0,12,8"
-                       IsVisible="{Binding ShowsMultiplePrestations}" />
-            <ListBox Grid.Row="10"
-                     Grid.Column="1"
-                     ItemsSource="{Binding MultiPrestations}"
-                     IsVisible="{Binding ShowsMultiplePrestations}"
-                     MaxHeight="180"
-                     Margin="0,0,0,8">
-                <ListBox.ItemTemplate>
-                    <DataTemplate>
-                        <CheckBox IsChecked="{Binding IsSelected, Mode=TwoWay}" Margin="0,0,0,8">
-                            <StackPanel Spacing="2">
-                                <TextBlock Text="{Binding Title}" FontWeight="Bold" />
-                                <TextBlock Text="{Binding Details}" FontSize="11" Opacity="0.7" TextWrapping="Wrap" />
-                            </StackPanel>
-                        </CheckBox>
-                    </DataTemplate>
-                </ListBox.ItemTemplate>
-            </ListBox>
-
-            <TextBlock Grid.Row="11"
-                       Text="Informations"
-                       VerticalAlignment="Center"
-                       Margin="0,0,12,8"
-                       IsVisible="{Binding ShowsAdditionalInfo}" />
-            <TextBox Grid.Row="11"
-                     Grid.Column="1"
-                     Text="{Binding AdditionalInfo, Mode=TwoWay}"
-                     Margin="0,0,0,8"
-                     IsVisible="{Binding ShowsAdditionalInfo}" />
-
-            <CheckBox Grid.Row="12" Grid.ColumnSpan="2"
-                      Content="Je consens à la création de cette commande"
-                      IsChecked="{Binding Consent, Mode=TwoWay}"
-                      Margin="0,4,0,12" />
-
-            <Grid Grid.Row="13" Grid.ColumnSpan="2" ColumnDefinitions="Auto,12,*,Auto">
-                <Button Grid.Column="0"
-                    Content="{Binding SubmitLabel}"
-                        Command="{Binding SubmitCommand}"
-                        IsEnabled="{Binding IsSupported}" />
-                <TextBox Grid.Column="2"
-                         Text="{Binding StatusMessage}"
-                         IsReadOnly="True"
-                         AcceptsReturn="True"
-                         TextWrapping="Wrap"
-                         BorderThickness="0"
-                         BorderBrush="Transparent"
-                         Padding="0"
-                         Background="Transparent"
-                         VerticalAlignment="Center" />
-                <ProgressBar Grid.Column="3"
-                             Width="120"
-                             IsIndeterminate="True"
-                             IsVisible="{Binding IsBusy}" />
-            </Grid>
-        </Grid>
-    </ScrollViewer>
-</ContentPage>

src/PostIt/PostIt/Views/BillingQueriesPage.axaml

@@ -1,52 +0,0 @@
-<ContentPage xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:vm="using:PostIt.ViewModels"
-             x:Class="PostIt.Views.BillingQueriesPage"
-             x:DataType="vm:BillingQueriesPageViewModel"
-             Header="Commandes billing">
-    <Grid RowDefinitions="Auto,Auto,*,Auto" Margin="12">
-        <StackPanel Grid.Row="0" Spacing="2">
-            <TextBlock Text="{Binding Title}" FontSize="18" FontWeight="Bold" />
-            <TextBlock Text="{Binding ContextLabel}" Opacity="0.75" />
-        </StackPanel>
-
-        <StackPanel Grid.Row="1" Orientation="Horizontal" Spacing="8" Margin="0,12,0,12">
-            <Button Content="Rafraîchir" Command="{Binding RefreshCommand}" />
-            <Button Content="Ouvrir la commande"
-                    Command="{Binding OpenSelectedQueryCommand}"
-                    IsVisible="{Binding CanOpenDetails}" />
-        </StackPanel>
-
-        <ListBox Grid.Row="2" ItemsSource="{Binding Queries}" SelectedItem="{Binding SelectedQuery, Mode=TwoWay}">
-            <ListBox.ItemTemplate>
-                <DataTemplate x:DataType="vm:BillingQueryDisplayItem">
-                    <Border BorderThickness="0,0,0,1" BorderBrush="#22000000" Padding="0,0,0,10" Margin="0,0,0,10">
-                        <StackPanel Spacing="3">
-                            <TextBlock Text="{Binding Description}" FontWeight="Bold" />
-                            <TextBlock Text="{Binding Summary}" TextWrapping="Wrap" FontSize="12" Opacity="0.8" />
-                            <StackPanel Orientation="Horizontal" Spacing="8">
-                                <TextBlock Text="{Binding EventDateLabel}" FontSize="11" Opacity="0.7" />
-                                <TextBlock Text="{Binding StatusLabel}" FontSize="11" Opacity="0.7" />
-                                <TextBlock Text="{Binding BillingCode}" FontSize="11" Opacity="0.6" />
-                            </StackPanel>
-                        </StackPanel>
-                    </Border>
-                </DataTemplate>
-            </ListBox.ItemTemplate>
-        </ListBox>
-
-        <Grid Grid.Row="3" ColumnDefinitions="*,Auto" Margin="0,12,0,0">
-            <TextBox Grid.Column="0"
-                     Text="{Binding StatusMessage}"
-                     IsReadOnly="True"
-                     AcceptsReturn="True"
-                     TextWrapping="Wrap"
-                     BorderThickness="0"
-                     BorderBrush="Transparent"
-                     Padding="0"
-                     Background="Transparent"
-                     VerticalAlignment="Center" />
-            <ProgressBar Grid.Column="1" Width="120" IsIndeterminate="True" IsVisible="{Binding IsBusy}" />
-        </Grid>
-    </Grid>
-</ContentPage>

src/PostIt/PostIt/Views/Blogs/MainPage.axaml

@@ -3,6 +3,7 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:vm="using:PostIt.ViewModels"
+             xmlns:postitControls="using:PostIt.Controls"
              xmlns:models="using:Yavsc.Blogspot"
              xmlns:views="using:PostIt.Views"
              xmlns:AvaloniaEdit="clr-namespace:AvaloniaEdit;assembly=AvaloniaEdit"
@@ -24,13 +25,13 @@
             <RowDefinition Height="Auto" />
         </Grid.RowDefinitions>
 
-        <StackPanel Grid.Row="0" Spacing="12"
+        <Border Grid.Row="0"
                 HorizontalAlignment="Stretch"
-                    VerticalAlignment="Top">
+                VerticalAlignment="Top"
-
+                Padding="0">
-            <StackPanel Orientation="Horizontal" Spacing="8">
+            <WrapPanel Orientation="Horizontal">
-                <Button Command="{Binding RefreshAsync}" Content="Refresh" />
+                <Button Command="{Binding RefreshAsync}" Content="🗘 Refresh" />
-                <Button Command="{Binding SearchAsync}" Content="Filter" />
+                <Button Command="{Binding SearchAsync}" Content="🔍 Filter" />
                 <Button Command="{Binding SaveAsync}" Content="Save" />
                 <Button Command="{Binding DeleteAsync}" Content="Delete" />
                 <Button x:Name="ManageAclButton"
@@ -62,8 +63,8 @@
                         Command="{Binding OpenSignatureDevAsync}"
                         Content="[DEV] Signature"
                         ToolTip.Tip="DEV ONLY — to remove when SignalR handler lands" />
-            </StackPanel>
+            </WrapPanel>
-        </StackPanel>
+        </Border>
 
         <Border Grid.Row="1" BorderBrush="Gray" BorderThickness="1" Padding="8">
             <ListBox ItemsSource="{Binding FilteredPosts}" SelectedItem="{Binding SelectedPost, Mode=TwoWay}"
@@ -104,7 +105,8 @@
                   VerticalAlignment="Stretch">
                 </TextBox>
 
-                <TextBlock Grid.Row="3" Text="{Binding StatusMessage}" Foreground="Gray" />
+                <postitControls:StatusBar Grid.Row="3"
+                                          DataContext="{Binding ActionStatus}" />
 
             </Grid>
         </Border>

src/PostIt/PostIt/Views/Commands/BrushPage.axaml

@@ -0,0 +1,106 @@
+<ContentPage xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:cvm="using:PostIt.ViewModels.Commands"
+             xmlns:postitControls="using:PostIt.Controls"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="PostIt.Views.Commands.BrushPage"
+
+             x:DataType="cvm:BrushViewModel"
+             Header="Commande billing">
+  <ScrollViewer>
+    <Grid RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto" ColumnDefinitions="Auto,*" Margin="12">
+      <TextBlock Grid.Row="0" Grid.ColumnSpan="2"
+                 Text="{Binding Title}"
+                 FontSize="18"
+                 FontWeight="Bold" />
+
+      <TextBlock Grid.Row="1" Grid.ColumnSpan="2"
+                 Margin="0,4,0,12"
+                 Text="{Binding SupportMessage}"
+                 TextWrapping="Wrap"
+                 Opacity="0.8" />
+
+      <TextBlock Grid.Row="2" Text="Utilisateur" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding PerformerLabel}" IsReadOnly="True" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="3" Text="Activité" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="3" Grid.Column="1" Text="{Binding ActivityLabel}" IsReadOnly="True" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="4" Text="Date" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <DatePicker Grid.Row="4" Grid.Column="1" DayFormat="ddd dd" SelectedDate="{Binding EventDate, Mode=TwoWay}" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="5"
+                 Text="Motif"
+                 VerticalAlignment="Center"
+                 Margin="0,0,12,8" />
+      <TextBox Grid.Row="5"
+               Grid.Column="1"
+               Text="{Binding Reason, Mode=TwoWay}"
+               Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="6" Text="Adresse" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="6" Grid.Column="1" Text="{Binding Address, Mode=TwoWay}" Margin="0,0,0,8" />
+
+      <Button Grid.Row="7"
+              Grid.ColumnSpan="2"
+              HorizontalAlignment="Left"
+              Margin="0,0,0,8"
+              Content="Utiliser ma position"
+              Command="{Binding UseCurrentLocationCommand}" />
+
+      <TextBlock Grid.Row="8" Text="Latitude" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="8" Grid.Column="1" Text="{Binding Latitude, Mode=TwoWay}" PlaceholderText="Optionnel" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="9" Text="Longitude" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="9" Grid.Column="1" Text="{Binding Longitude, Mode=TwoWay}" PlaceholderText="Optionnel" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="10"
+                 Text="Prestation"
+                 VerticalAlignment="Center"
+                 Margin="0,0,12,8" />
+      <ComboBox Grid.Row="10"
+                Grid.Column="1"
+                ItemsSource="{Binding AvailablePrestations}"
+                SelectedItem="{Binding SelectedPrestation, Mode=TwoWay}"
+                Margin="0,0,0,8">
+        <ComboBox.ItemTemplate>
+          <DataTemplate>
+            <StackPanel Spacing="2">
+              <TextBlock Text="{Binding Title}" FontWeight="Bold" />
+              <TextBlock Text="{Binding Details}" FontSize="11" Opacity="0.7" TextWrapping="Wrap" />
+            </StackPanel>
+          </DataTemplate>
+        </ComboBox.ItemTemplate>
+      </ComboBox>
+
+      <TextBlock Grid.Row="12"
+                 Text="Informations"
+                 VerticalAlignment="Center"
+                 Margin="0,0,12,8" />
+      <TextBox Grid.Row="12"
+               Grid.Column="1"
+               Text="{Binding AdditionalInfo, Mode=TwoWay}"
+               Margin="0,0,0,8" />
+
+      <CheckBox Grid.Row="13" Grid.ColumnSpan="2"
+                Content="Je consens à la création de cette commande"
+                IsChecked="{Binding Consent, Mode=TwoWay}"
+                Margin="0,4,0,12" />
+
+      <Grid Grid.Row="14" Grid.ColumnSpan="2" ColumnDefinitions="Auto,12,*,Auto">
+        <Button Grid.Column="0"
+                Content="{Binding SubmitLabel}"
+                Command="{Binding SubmitCommand}"
+                IsEnabled="{Binding IsSupported}" />
+        <postitControls:StatusBar Grid.Column="2"
+                DataContext="{Binding ActionStatus}" />
+        <ProgressBar Grid.Column="3"
+                     Width="120"
+                     IsIndeterminate="True"
+                     IsVisible="{Binding IsBusy}" />
+      </Grid>
+    </Grid>
+  </ScrollViewer>
+</ContentPage>

src/PostIt/PostIt/Views/Commands/BrushPage.axaml.cs

@@ -0,0 +1,13 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace PostIt.Views.Commands;
+
+public partial class BrushPage : ContentPage
+{
+    public BrushPage()
+    {
+        InitializeComponent();
+    }
+}

src/PostIt/PostIt/Views/Commands/RdvPage.axaml

@@ -0,0 +1,125 @@
+<ContentPage xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:cvm="using:PostIt.ViewModels.Commands"
+             xmlns:mapsui="using:Mapsui.UI.Avalonia"
+             xmlns:postitControls="using:PostIt.Controls"
+             x:Class="PostIt.Views.Commands.RdvPage"
+             x:DataType="cvm:RdvViewModel"
+             Header="Commande billing">
+  <ScrollViewer>
+    <Grid RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto" ColumnDefinitions="Auto,*" Margin="12">
+      <TextBlock Grid.Row="0" Grid.ColumnSpan="2"
+                 Text="{Binding Title}"
+                 FontSize="18"
+                 FontWeight="Bold" />
+
+      <TextBlock Grid.Row="1" Grid.ColumnSpan="2"
+                 Margin="0,4,0,12"
+                 Text="{Binding SupportMessage}"
+                 TextWrapping="Wrap"
+                 Opacity="0.8" />
+
+      <TextBlock Grid.Row="2" Text="Utilisateur" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding PerformerLabel}" IsReadOnly="True" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="3" Text="Activité" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="3" Grid.Column="1" Text="{Binding ActivityLabel}" IsReadOnly="True" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="4" Text="Date" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <DatePicker Grid.Row="4" Grid.Column="1" DayFormat="ddd dd" SelectedDate="{Binding EventDateSelection, Mode=TwoWay}" Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="5"
+                 Text="Motif"
+                 VerticalAlignment="Center"
+                 Margin="0,0,12,8" />
+      <TextBox Grid.Row="5"
+               Grid.Column="1"
+               Text="{Binding Reason, Mode=TwoWay}"
+               Margin="0,0,0,8" />
+
+      <TextBlock Grid.Row="6" Text="Adresse" VerticalAlignment="Center" Margin="0,0,12,8" />
+      <TextBox Grid.Row="6" Grid.Column="1" Text="{Binding Address, Mode=TwoWay}" Margin="0,0,0,8" />
+
+      <Grid Grid.Row="7"
+        x:Name="SuggestedAddressPanel"
+        Grid.ColumnSpan="2"
+          ColumnDefinitions="*,12,Auto,12,Auto"
+        Margin="0,0,0,8"
+        IsVisible="{Binding HasSuggestedAddressPanel}">
+        <TextBlock Grid.Column="0"
+           VerticalAlignment="Center"
+           Text="{Binding SuggestedAddress, StringFormat='Adresse suggérée: {0}'}"
+           TextWrapping="Wrap"
+           Opacity="0.8" />
+        <Button Grid.Column="2"
+          x:Name="ApplySuggestedAddressButton"
+            Content="Utiliser"
+          IsVisible="{Binding HasSuggestedAddress}"
+            Command="{Binding ApplySuggestedAddressCommand}" />
+        <ProgressBar Grid.Column="4"
+               x:Name="SuggestedAddressProgress"
+               Width="80"
+               IsIndeterminate="True"
+               IsVisible="{Binding IsResolvingAddress}" />
+      </Grid>
+
+        <Grid Grid.Row="8"
+            Grid.ColumnSpan="2"
+            ColumnDefinitions="Auto,12,Auto"
+            Margin="0,0,0,8">
+        <Button Grid.Column="0"
+          HorizontalAlignment="Left"
+          Content="Utiliser ma position"
+          Command="{Binding UseCurrentLocationCommand}" />
+        <Button Grid.Column="2"
+          HorizontalAlignment="Left"
+          Content="Me localiser sur la carte"
+          Click="OnCenterCurrentLocationClicked"
+          IsEnabled="{Binding CanUseCurrentLocation}" />
+            </Grid>
+
+            <TextBlock Grid.Row="9" Text="Latitude" VerticalAlignment="Center" Margin="0,0,12,8" />
+            <TextBox Grid.Row="9" Grid.Column="1" Text="{Binding Latitude, Mode=TwoWay}" PlaceholderText="Optionnel" Margin="0,0,0,8" />
+
+            <TextBlock Grid.Row="10" Text="Longitude" VerticalAlignment="Center" Margin="0,0,12,8" />
+            <TextBox Grid.Row="10" Grid.Column="1" Text="{Binding Longitude, Mode=TwoWay}" PlaceholderText="Optionnel" Margin="0,0,0,8" />
+
+            <TextBlock Grid.Row="11" Grid.ColumnSpan="2"
+             Text="Carte: cliquez pour positionner le rendez-vous"
+             Margin="0,0,0,8"
+             Opacity="0.85" />
+            <mapsui:MapControl Grid.Row="12"
+             Grid.ColumnSpan="2"
+             x:Name="LocationMap"
+             Height="260"
+             Margin="0,0,0,8" />
+
+            <TextBlock Grid.Row="13"
+                 Text="Informations"
+                 VerticalAlignment="Center"
+                 Margin="0,0,12,8" />
+            <TextBox Grid.Row="13"
+               Grid.Column="1"
+               Text="{Binding AdditionalInfo, Mode=TwoWay}"
+               Margin="0,0,0,8" />
+
+            <CheckBox Grid.Row="14" Grid.ColumnSpan="2"
+                Content="Je consens à la création de cette commande"
+                IsChecked="{Binding Consent, Mode=TwoWay}"
+                Margin="0,4,0,12" />
+
+            <Grid Grid.Row="15" Grid.ColumnSpan="2" ColumnDefinitions="Auto,12,*,Auto">
+        <Button Grid.Column="0"
+                Content="{Binding SubmitLabel}"
+                Command="{Binding SubmitCommand}"
+                IsEnabled="{Binding IsSupported}" />
+        <postitControls:StatusBar Grid.Column="2"
+                DataContext="{Binding ActionStatus}" />
+        <ProgressBar Grid.Column="3"
+                     Width="120"
+                     IsIndeterminate="True"
+                     IsVisible="{Binding IsBusy}" />
+      </Grid>
+    </Grid>
+  </ScrollViewer>
+</ContentPage>

src/PostIt/PostIt/Views/Commands/RdvPage.axaml.cs

@@ -0,0 +1,236 @@
+using System;
+using System.ComponentModel;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using Mapsui;
+using Mapsui.Layers;
+using Mapsui.Projections;
+using Mapsui.Styles;
+using Mapsui.Tiling;
+using Mapsui.UI.Avalonia;
+using PostIt.Services;
+using PostIt.ViewModels.Commands;
+
+namespace PostIt.Views.Commands;
+
+public partial class RdvPage : ContentPage
+{
+    private const double DefaultLatitude = 48.8566;
+    private const double DefaultLongitude = 2.3522;
+    private const int DefaultZoomLevel = 4;
+    private const int SelectedZoomLevel = 13;
+    internal const double ReverseGeocodingCacheToleranceDegrees = 0.0001;
+    private static readonly TimeSpan ReverseGeocodingDebounce = TimeSpan.FromMilliseconds(350);
+
+    private MapControl? _locationMap;
+    private MemoryLayer? _selectionLayer;
+    private RdvViewModel? _currentViewModel;
+    private readonly IReverseGeocodingService _reverseGeocodingService;
+    private CancellationTokenSource? _reverseGeocodeCts;
+    private double? _lastResolvedLatitude;
+    private double? _lastResolvedLongitude;
+    private string? _lastResolvedAddress;
+
+    public RdvPage()
+        : this(null)
+    {
+    }
+
+    public RdvPage(IReverseGeocodingService? reverseGeocodingService)
+    {
+        _reverseGeocodingService = reverseGeocodingService ?? new NominatimReverseGeocodingService();
+        InitializeComponent();
+        InitializeMap();
+    }
+
+    private void InitializeComponent()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    private void InitializeMap()
+    {
+        _locationMap = this.FindControl<MapControl>("LocationMap");
+        if (_locationMap is null)
+            return;
+
+        var map = new Map();
+        map.Layers.Add(OpenStreetMap.CreateTileLayer());
+        _selectionLayer = CreateSelectionLayer();
+        map.Layers.Add(_selectionLayer);
+        _locationMap.Map = map;
+        _locationMap.MapTapped += OnMapTapped;
+
+        DataContextChanged += OnDataContextChanged;
+        AttachViewModel(DataContext as RdvViewModel);
+    }
+
+    private void OnDataContextChanged(object? sender, System.EventArgs e)
+    {
+        AttachViewModel(DataContext as RdvViewModel);
+        CenterFromViewModel();
+    }
+
+    private async void OnMapTapped(object? sender, MapEventArgs e)
+    {
+        if (DataContext is not RdvViewModel vm)
+            return;
+
+        var (longitude, latitude) = SphericalMercator.ToLonLat(e.WorldPosition.X, e.WorldPosition.Y);
+        vm.ApplyLocationFromMap(latitude, longitude);
+        UpdateMarkerFromViewModel();
+        CenterMap(latitude, longitude, zoomLevel: SelectedZoomLevel);
+        await TryResolveAddressAsync(vm, latitude, longitude);
+    }
+
+    private async void OnCenterCurrentLocationClicked(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        if (DataContext is not RdvViewModel vm || !vm.CanUseCurrentLocation)
+            return;
+
+        await vm.UseCurrentLocationCommand.ExecuteAsync(null);
+        UpdateMarkerFromViewModel();
+        CenterFromViewModel();
+
+        if (vm.Latitude.HasValue && vm.Longitude.HasValue)
+            await TryResolveAddressAsync(vm, vm.Latitude.Value, vm.Longitude.Value);
+    }
+
+    private void AttachViewModel(RdvViewModel? vm)
+    {
+        if (_currentViewModel is not null)
+            _currentViewModel.PropertyChanged -= OnViewModelPropertyChanged;
+
+        _currentViewModel = vm;
+
+        if (_currentViewModel is not null)
+            _currentViewModel.PropertyChanged += OnViewModelPropertyChanged;
+
+        UpdateMarkerFromViewModel();
+    }
+
+    private void OnViewModelPropertyChanged(object? sender, PropertyChangedEventArgs e)
+    {
+        if (e.PropertyName == nameof(RdvViewModel.Latitude)
+            || e.PropertyName == nameof(RdvViewModel.Longitude))
+        {
+            UpdateMarkerFromViewModel();
+        }
+    }
+
+    private void CenterFromViewModel()
+    {
+        if (DataContext is not RdvViewModel vm)
+        {
+            CenterMap(DefaultLatitude, DefaultLongitude, zoomLevel: DefaultZoomLevel);
+            return;
+        }
+
+        if (vm.Latitude.HasValue && vm.Longitude.HasValue)
+        {
+            CenterMap(vm.Latitude.Value, vm.Longitude.Value, zoomLevel: SelectedZoomLevel);
+            return;
+        }
+
+        CenterMap(DefaultLatitude, DefaultLongitude, zoomLevel: DefaultZoomLevel);
+    }
+
+    private void CenterMap(double latitude, double longitude, int zoomLevel)
+    {
+        if (_locationMap?.Map is null)
+            return;
+
+        var (x, y) = SphericalMercator.FromLonLat(longitude, latitude);
+        _locationMap.Map.Navigator.CenterOn(x, y);
+        _locationMap.Map.Navigator.ZoomToLevel(zoomLevel);
+    }
+
+    private void UpdateMarkerFromViewModel()
+    {
+        if (_selectionLayer is null)
+            return;
+
+        if (DataContext is not RdvViewModel vm
+            || !vm.Latitude.HasValue
+            || !vm.Longitude.HasValue)
+        {
+            _selectionLayer.Features = Enumerable.Empty<IFeature>();
+            _locationMap?.RefreshData(ChangeType.Discrete);
+            return;
+        }
+
+        var (x, y) = SphericalMercator.FromLonLat(vm.Longitude.Value, vm.Latitude.Value);
+        _selectionLayer.Features = new IFeature[] { new PointFeature(x, y) };
+        _locationMap?.RefreshData(ChangeType.Discrete);
+    }
+
+    private static MemoryLayer CreateSelectionLayer()
+    {
+        return new MemoryLayer("selected-location")
+        {
+            Style = new SymbolStyle
+            {
+                SymbolType = SymbolType.Ellipse,
+                Fill = new Brush(Color.Crimson),
+                Outline = new Pen(Color.White, 2),
+                SymbolScale = 0.9,
+            },
+            Features = Enumerable.Empty<IFeature>(),
+        };
+    }
+
+    private async Task TryResolveAddressAsync(RdvViewModel vm, double latitude, double longitude)
+    {
+        if (_lastResolvedLatitude.HasValue
+            && _lastResolvedLongitude.HasValue
+            && AreCoordinatesClose(_lastResolvedLatitude.Value, _lastResolvedLongitude.Value, latitude, longitude)
+            && !string.IsNullOrWhiteSpace(_lastResolvedAddress))
+        {
+            vm.ApplyResolvedAddress(_lastResolvedAddress);
+            return;
+        }
+
+        _reverseGeocodeCts?.Cancel();
+        _reverseGeocodeCts?.Dispose();
+        _reverseGeocodeCts = new CancellationTokenSource();
+        var cancellationToken = _reverseGeocodeCts.Token;
+
+        try
+        {
+            vm.NotifyReverseGeocodingStarted();
+            await Task.Delay(ReverseGeocodingDebounce, cancellationToken).ConfigureAwait(true);
+
+            var resolved = await _reverseGeocodingService
+                .TryResolveAddressAsync(latitude, longitude, cancellationToken)
+                .ConfigureAwait(true);
+
+            if (!string.IsNullOrWhiteSpace(resolved))
+            {
+                _lastResolvedLatitude = latitude;
+                _lastResolvedLongitude = longitude;
+                _lastResolvedAddress = resolved;
+                vm.ApplyResolvedAddress(resolved);
+                return;
+            }
+
+            vm.NotifyReverseGeocodingUnavailable();
+        }
+        catch (OperationCanceledException)
+        {
+            vm.IsResolvingAddress = false;
+        }
+    }
+
+    internal static bool AreCoordinatesClose(
+        double latitudeA,
+        double longitudeA,
+        double latitudeB,
+        double longitudeB)
+    {
+        return Math.Abs(latitudeA - latitudeB) <= ReverseGeocodingCacheToleranceDegrees
+            && Math.Abs(longitudeA - longitudeB) <= ReverseGeocodingCacheToleranceDegrees;
+    }
+}

src/PostIt/PostIt/Views/Layout/SettingsPage.axaml

@@ -2,6 +2,7 @@
         xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:controls="cl:avalonia.Controls"
+    xmlns:postitControls="using:PostIt.Controls"
         x:Class="PostIt.Views.SettingsPage"
         xmlns:vm="using:PostIt.ViewModels"
         x:DataType="vm:Settings"
@@ -39,25 +40,34 @@
         <TextBox Grid.Row="7" x:Name="BlogsApiUrlTextBox"
         Text="{Binding BlogsApiUrl, Mode=TwoWay}"/>
 
-        <TextBlock Grid.Row="8" Text="Business API URL"/>
+        <TextBlock Grid.Row="8" Text="API URL"/>
         <TextBox Grid.Row="9" x:Name="BusinessApiUrlTextBox"
-        Text="{Binding BusinessApiUrl, Mode=TwoWay}"/>
+        Text="{Binding ApiUrl, Mode=TwoWay}"/>
 
         <TextBlock Grid.Row="10" Text="Dark mode"/>
         <CheckBox Grid.Row="11" x:Name="DarkModeCheckBox" IsChecked="{Binding DarkMode, Mode=TwoWay}"/>
 
-        <!-- Sauver: bound to the Save RelayCommand on the Settings
+        <StackPanel Grid.Row="12" Spacing="8">
-             VM. The source generator emits an ICommand property whose
+            <TextBlock Text="Avatar: PNG, JPG/JPEG, WEBP, GIF. Taille max 2 MB."
-             name matches the source method exactly (no "Command"
+                   Opacity="0.8"
-             suffix is added), so we bind {Binding Save} here. See
+                   TextWrapping="Wrap" />
-             AGENTS.md "Avalonia + CommunityToolkit.Mvvm : conventions
+
-             de binding pour [RelayCommand]" for the full rationale.
+            <postitControls:StatusBar DataContext="{Binding ActionStatus}"/>
-             IsEnabled tracks IsDirty so the button auto-disables
+
-             when there's nothing to persist. -->
+            <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
-        <Button Grid.Row="12" Content="Sauver"
+            <Button x:Name="ChooseAvatarButton"
-                HorizontalAlignment="Right"
+                Content="Choisir l'avatar"
-                Command="{Binding Save}"
+                    Click="ChooseAvatar_Click"
+                    Margin="0,0,8,0"/>
+
+                <!-- Sauver: bind to the RelayCommand-generated property
+                 (SaveCommand). IsEnabled tracks IsDirty so the button
+                 auto-disables when there's nothing to persist. -->
+            <Button Content="Sauver"
+                    Command="{Binding SaveCommand}"
                     IsEnabled="{Binding IsDirty}"/>
+                </StackPanel>
+        </StackPanel>
 
     </Grid>
 </ContentPage>

src/PostIt/PostIt/Views/Layout/SettingsPage.axaml.cs

@@ -0,0 +1,116 @@
+
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using Avalonia.Platform.Storage;
+using Microsoft.Extensions.DependencyInjection;
+using PostIt.Services;
+using PostIt.ViewModels;
+
+namespace PostIt.Views;
+public partial class SettingsPage: ContentPage
+{
+    private const int MaxAvatarSizeMegabytes = 2;
+    private const string AcceptedAvatarFormats = "PNG, JPG/JPEG, WEBP, GIF";
+
+    private int _avatarStatusVersion;
+
+    public SettingsPage()
+    {
+        InitializeComponent();
+    }
+
+    private async void ChooseAvatar_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        var statusVersion = Interlocked.Increment(ref _avatarStatusVersion);
+        ChooseAvatarButton.IsEnabled = false;
+        SetAvatarStatus("Selection d'un fichier avatar...", StatusSeverity.Info);
+
+        var topLevel = TopLevel.GetTopLevel(this);
+        if (topLevel is null)
+        {
+            SetAvatarStatus("Impossible d'acceder a la fenetre active.", StatusSeverity.Error);
+            ChooseAvatarButton.IsEnabled = true;
+            return;
+        }
+
+        var files = await topLevel.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
+        {
+            Title = "Choisir un avatar",
+            AllowMultiple = false,
+            FileTypeFilter = new[]
+            {
+                new FilePickerFileType("Images")
+                {
+                    Patterns = new[] { "*.png", "*.jpg", "*.jpeg", "*.webp", "*.gif" }
+                }
+            }
+        });
+
+        var file = files.FirstOrDefault();
+        if (file is null)
+        {
+            SetAvatarStatus("Upload annule.", StatusSeverity.Warning);
+            ChooseAvatarButton.IsEnabled = true;
+            return;
+        }
+
+        try
+        {
+            SetAvatarStatus("Upload avatar en cours...", StatusSeverity.Info);
+
+            await using var stream = await file.OpenReadAsync();
+            var api = ((App)App.Current!).ServiceProvider!.GetRequiredService<YavscApiClient>();
+            var message = await api.SetAvatarAsync(stream, file.Name, GetMimeType(file.Name));
+            SetAvatarStatus(string.IsNullOrWhiteSpace(message)
+                ? "Avatar mis a jour."
+                : message,
+                StatusSeverity.Info);
+
+            _ = ClearSuccessStatusLaterAsync(statusVersion);
+        }
+        catch (Exception ex)
+        {
+            SetAvatarStatus($"Echec upload avatar: {ex.Message}", StatusSeverity.Error);
+            Console.Error.WriteLine($"🩎 Avatar upload failed: {ex.Message}");
+        }
+        finally
+        {
+            ChooseAvatarButton.IsEnabled = true;
+        }
+    }
+
+    private async Task ClearSuccessStatusLaterAsync(int statusVersion)
+    {
+        await Task.Delay(TimeSpan.FromSeconds(5)).ConfigureAwait(true);
+        if (statusVersion != _avatarStatusVersion)
+            return;
+
+        SetAvatarStatus($"Avatar pret. Formats supportes: {AcceptedAvatarFormats}. Taille max: {MaxAvatarSizeMegabytes} MB.", StatusSeverity.Info);
+    }
+
+    private void SetAvatarStatus(string message, StatusSeverity severity)
+    {
+        if (DataContext is Settings settings)
+        {
+            settings.SetActionStatus(message, severity);
+        }
+    }
+
+    private static string GetMimeType(string fileName)
+    {
+        var ext = Path.GetExtension(fileName)?.ToLowerInvariant();
+        return ext switch
+        {
+            ".png" => "image/png",
+            ".jpg" or ".jpeg" => "image/jpeg",
+            ".webp" => "image/webp",
+            ".gif" => "image/gif",
+            _ => "application/octet-stream"
+        };
+    }
+}

src/PostIt/PostIt/Views/SettingsPage.axaml.cs

@@ -1,12 +0,0 @@
-
-
-using Avalonia.Controls;
-
-namespace PostIt.Views;
-public partial class SettingsPage: ContentPage
-{
-    public SettingsPage()
-    {
-        InitializeComponent();
-    }
-}

src/PostIt/PostIt/Views/Signature/SignaturePage.axaml

@@ -3,6 +3,7 @@
              xmlns:d="http://github.com/avaloniaui/avalonia"
              xmlns:vm="using:PostIt.ViewModels"
              xmlns:controls="using:PostIt.Controls"
+             xmlns:postitControls="using:PostIt.Controls"
              x:Class="PostIt.Views.SignaturePage"
              x:DataType="vm:SignaturePageViewModel"
              HorizontalAlignment="Stretch"
@@ -59,10 +60,8 @@
             <Button Content="Capturer" Command="{Binding CaptureAsync}" />
         </StackPanel>
 
-        <TextBlock Grid.Row="3"
+        <postitControls:StatusBar Grid.Row="3"
-                   Text="{Binding StatusMessage}"
+                      DataContext="{Binding ActionStatus}" />
-                   Foreground="Gray"
-                   TextWrapping="Wrap" />
 
         <TextBlock Grid.Row="4"
                    FontSize="11"