Hide inserted estimates from client list; redirect anon to /signin

Estimates with status Inserted (provider hasn't worked on them yet)
were showing up in the client's "Mes devis à valider" list. The
asclient endpoint now requires ProviderValidationDate to be set, so
only estimates the provider has actually established and submitted
are visible to the client. The asprovider endpoint is unchanged
(providers still need to see incoming unprocessed requests).

Also fix the anonymous-access redirect on Yavsc.Org: the application
cookie's LoginPath defaulted to /Account/Login, which has no
controller. Anonymous hits to a restricted page now redirect to the
real /signin endpoint (with /signout and /Account/AccessDenied set
to match the existing controller routes).

Co-Authored-By: Claude Code <noreply@anthropic.com>

src/Yavsc.Api.Test/EstimateApiControllerTests.cs

@@ -209,9 +209,12 @@ public sealed class EstimateApiControllerTests : IClassFixture<ApiWebServerFixtu
 
     /// <summary>
     /// Seeds an estimate owned by alice (the provider) for the given
-    /// client, optionally already validated by the client.
+    /// client, optionally already validated by the client. By default the
+    /// estimate is also provider-validated (i.e. the provider has submitted
+    /// it); pass <paramref name="providerValidated"/> = false to seed a
+    /// freshly inserted request the provider hasn't worked on yet.
     /// </summary>
-    private long SeedEstimate(string clientId, bool clientValidated)
+    private long SeedEstimate(string clientId, bool clientValidated, bool providerValidated = true)
     {
         using var scope = _fixture.Services.CreateScope();
         var db = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
@@ -229,6 +232,7 @@ public sealed class EstimateApiControllerTests : IClassFixture<ApiWebServerFixtu
             {
                 new() { Name = "Prestation", Description = "Prestation de base", Count = 1, UnitaryCost = 120m, Currency = "EUR" },
             },
+            ProviderValidationDate = providerValidated ? DateTime.UtcNow : default,
             ClientValidationDate = clientValidated ? DateTime.UtcNow : default,
         };
         db.Estimates.Add(estimate);
@@ -259,6 +263,26 @@ public sealed class EstimateApiControllerTests : IClassFixture<ApiWebServerFixtu
         Assert.Equal("alice", item.GetProperty("ownerId").GetString());
     }
 
+    [Fact]
+    public async Task GetOngoingEstimatesAsClient_excludes_inserted_requests_not_yet_provider_validated()
+    {
+        _fixture.ResetAndSeedActivityGraph();
+        var submittedId = SeedEstimate(clientId: "bob", clientValidated: false);                  // provider submitted: visible
+        SeedEstimate(clientId: "bob", clientValidated: false, providerValidated: false);          // inserted, not worked on: excluded
+
+        using var http = NewClient("bob");
+
+        var response = await http.GetAsync("/api/v1/estimate/asclient", TestContext.Current.CancellationToken);
+        var body = await response.Content.ReadAsStringAsync(TestContext.Current.CancellationToken);
+
+        Assert.True(response.StatusCode == HttpStatusCode.OK, $"Unexpected status {(int)response.StatusCode} ({response.StatusCode}): {body}");
+
+        using var doc = JsonDocument.Parse(body);
+        var items = doc.RootElement.EnumerateArray().ToArray();
+        var item = Assert.Single(items);
+        Assert.Equal(submittedId, item.GetProperty("id").GetInt64());
+    }
+
     [Fact]
     public async Task GetOngoingEstimatesAsProvider_returns_only_ongoing_estimates_established_by_the_provider()
     {

src/Yavsc.Api/Controllers/Business/EstimateApiController.cs

@@ -201,12 +201,18 @@ namespace Yavsc.Controllers
         // GET: api/estimate/asclient
         // Ongoing estimates (not yet validated by the client) where the
         // current user is the client who initiated the request.
+        // An estimate only becomes visible to the client once the provider
+        // has actually established and submitted it (ProviderValidationDate);
+        // a freshly inserted request the provider hasn't worked on yet is
+        // not something the client can validate, so it's excluded.
         [HttpGet("asclient")]
         public IActionResult GetOngoingEstimatesAsClient()
         {
             var uid = User.GetUserId();
             return Ok(_context.Estimates.Include(e => e.Bill)
-                .Where(e => e.ClientId == uid && e.ClientValidationDate == default));
+                .Where(e => e.ClientId == uid
+                    && e.ProviderValidationDate != default
+                    && e.ClientValidationDate == default));
         }
 
         // GET: api/estimate/asprovider

src/Yavsc.Org.Tests/Smoke/AccountSmokeTests.cs

@@ -1,4 +1,7 @@
+using System.Net;
+using System.Net.Http;
 using IdentityServer8.Stores;
+using Microsoft.AspNetCore.Mvc.Testing;
 using Microsoft.Extensions.DependencyInjection;
 using Xunit;
 
@@ -40,4 +43,26 @@ public class AccountSmokeTests : IClassFixture<TestWebApplicationFactory>
 
         Assert.Null(exception);
     }
+
+    // Regression: anonymous access to a restricted page used to redirect to
+    // the ASP.NET Identity default LoginPath "/Account/Login", which has no
+    // controller here. The application cookie must redirect to the real
+    // sign-in endpoint at /signin instead.
+    [Fact]
+    public async Task Anonymous_access_to_protected_page_redirects_to_signin()
+    {
+        var client = _factory.CreateClient(new WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false,
+        });
+
+        // EstimateController is [Authorize]; GET /Estimate hits Index().
+        var response = await client.GetAsync("/Estimate", TestContext.Current.CancellationToken);
+
+        Assert.Equal(HttpStatusCode.Redirect, response.StatusCode);
+        var location = response.Headers.Location;
+        Assert.NotNull(location);
+        Assert.Equal("/signin", location.AbsolutePath);
+        Assert.Contains("ReturnUrl=%2FEstimate", location.Query);
+    }
 }

src/Yavsc.Org/Extensions/HostingExtensions.cs

@@ -215,6 +215,18 @@ public static class HostingExtensions
 
         services.AddScoped<IUserClaimsPrincipalFactory<ApplicationUser>, UserClaimsPrincipalFactory<ApplicationUser, IdentityRole>>();
 
+        // The default application cookie LoginPath is "/Account/Login", which
+        // has no controller here — anonymous access to a restricted page must
+        // redirect to the actual sign-in endpoint instead. The paths mirror
+        // the route attributes on AccountController (Constants.SigninPath etc.,
+        // which carry a "~/" prefix that the cookie middleware does not want).
+        services.ConfigureApplicationCookie(options =>
+        {
+            options.LoginPath = "/signin";
+            options.LogoutPath = "/signout";
+            options.AccessDeniedPath = "/Account/AccessDenied";
+        });
+
         // Dev-only: Chromium rejects SameSite=None without Secure on http://
         // (e.g. http://localhost:5000). The default Identity cookie policy
         // sets SameSite=None, which is invalid without Secure. Force Lax in