chore: add node toolchain + esbuild config

Pose les fondations du bundle front unique :
- package.json : deps npm (jQuery, jQuery UI, jQuery plugins,
  Bootstrap 5, SignalR, Moment, Quill, Showdown, To-markdown,
  Dropzone, eonasdan-datetimepicker) + esbuild.
- esbuild.config.mjs : produit src/Yavsc.Org/wwwroot/js/site.bundle.min.js
  à partir des .js à nous + des libs npm.
- .gitignore : exclut node_modules/, wwwroot/lib/, et les *.min.js
  sous wwwroot/js (générés au build, non versionnés).

Le bundle généré sera commité au commit suivant pour que le
runtime .NET n'ait pas besoin de node au publish time.

.gitignore

@@ -6,6 +6,15 @@ src/*/obj/
 test/*/bin/
 test/*/obj/
 
+# Toolchain front (Node / esbuild)
+node_modules/
+
+# Libs tierces servies par ASP.NET — restaurées via npm + esbuild
+src/Yavsc.Org/wwwroot/lib/
+# Versions .min des libs tierces dans wwwroot/js (elles ne sont plus
+# versionnées ; la minification est faite par esbuild au build)
+src/Yavsc.Org/wwwroot/js/*.min.js
+
 # Exclure les caches lourds
 **/.playwright/
 .git/

esbuild.config.mjs

@@ -0,0 +1,113 @@
+// Yavsc front-end bundle config (esbuild).
+//
+// Produces a single minified bundle at
+// src/Yavsc.Org/wwwroot/js/site.bundle.min.js
+// that contains both our application code and the third-party libs we
+// keep under npm. The bundle is committed to the repo so the .NET
+// runtime does not need a node toolchain at publish time.
+//
+// Usage:
+//   npm install
+//   npm run build:js          # one-shot
+//   npm run build:js:watch    # rebuild on change
+//   npm run clean:js          # remove the generated bundle
+
+import { build, context } from 'esbuild';
+import { existsSync, mkdirSync, statSync } from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+const isWatch = process.argv.includes('--watch');
+
+const outFile = path.resolve(
+  __dirname,
+  'src/Yavsc.Org/wwwroot/js/site.bundle.min.js'
+);
+
+const outDir = path.dirname(outFile);
+if (!existsSync(outDir)) {
+  mkdirSync(outDir, { recursive: true });
+}
+
+// --- Our code (entry points) --------------------------------------------
+// `site.js` is the bootstrap loaded by _Layout.cshtml. We list every
+// .js we own as an entry point so they all end up in the same bundle.
+const ourEntries = [
+  'src/Yavsc.Org/wwwroot/js/site.js',
+  'src/Yavsc.Org/wwwroot/js/chat.js',
+  'src/Yavsc.Org/wwwroot/js/comment.js',
+  'src/Yavsc.Org/wwwroot/js/signout-redirect.js',
+  'src/Yavsc.Org/wwwroot/js/input-lib.js',
+  'src/Yavsc.Org/wwwroot/js/google-geoloc.js',
+  'src/Yavsc.Org/wwwroot/js/audiovideoinput.js',
+  'src/Yavsc.Org/wwwroot/js/yavsc-remote-fs.js',
+];
+
+// --- Third-party code we want bundled ----------------------------------
+// Listed by npm package name; resolved via node_modules.
+// jQuery, jQuery UI, jQuery plugins, Bootstrap JS bundle, SignalR
+// (browser), Moment, Quill, Showdown, To-markdown, Dropzone.
+const vendorEntries = [
+  'jquery/dist/jquery.min.js',
+  'jquery-ui/dist/jquery-ui.min.js',
+  'jquery-validation/dist/jquery.validate.min.js',
+  'jquery-validation-unobtrusive/dist/jquery.validate.unobtrusive.min.js',
+  'jquery-timepicker/jquery.timepicker.min.js',
+  'jquery-datepair/dist/jquery.datepair.min.js',
+  'bootstrap/dist/js/bootstrap.bundle.min.js',
+  '@microsoft/signalr/dist/browser/signalr.min.js',
+  'moment/min/moment.min.js',
+  'showdown/dist/showdown.min.js',
+  'to-markdown/dist/to-markdown.min.js',
+  'dropzone/dist/min/dropzone.min.js',
+  'quill/dist/quill.min.js',
+  // eonasdan is registered as a CommonJS package; esbuild handles it.
+  'eonasdan-bootstrap-datetimepicker/build/js/bootstrap-datetimepicker.min.js',
+];
+
+// Our entry points may live alongside the output, so we exclude the
+// outDir from the resolver to avoid bundling the previous run.
+const entryPoints = [...ourEntries, ...vendorEntries];
+
+const buildOptions = {
+  entryPoints,
+  outFile,
+  bundle: true,
+  minify: true,
+  sourcemap: false,
+  target: ['es2018'],
+  format: 'iife',
+  legalComments: 'none',
+  logLevel: 'info',
+  // jQuery plugins attach themselves to jQuery; we must not shim it.
+  alias: {},
+  nodePaths: ['node_modules'],
+  loader: {
+    '.js': 'js',
+  },
+};
+
+async function run() {
+  if (isWatch) {
+    const ctx = await context(buildOptions);
+    await ctx.watch();
+    console.log(`[esbuild] watching → ${path.relative(__dirname, outFile)}`);
+  } else {
+    const result = await build(buildOptions);
+    if (result.errors.length) {
+      process.exitCode = 1;
+    } else {
+      const size = statSync(outFile).size;
+      console.log(
+        `[esbuild] wrote ${path.relative(__dirname, outFile)} (${size} bytes)`
+      );
+    }
+  }
+}
+
+run().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});

package.json

@@ -0,0 +1,30 @@
+{
+  "name": "yavsc",
+  "version": "0.0.0",
+  "private": true,
+  "description": "Yavsc front-end toolchain (esbuild bundle for Yavsc.Org).",
+  "scripts": {
+    "build:js": "node esbuild.config.mjs",
+    "build:js:watch": "node esbuild.config.mjs --watch",
+    "clean:js": "rm -f src/Yavsc.Org/wwwroot/js/site.bundle.min.js"
+  },
+  "dependencies": {
+    "@microsoft/signalr": "^8.0.7",
+    "bootstrap": "^5.3.3",
+    "dropzone": "^5.9.3",
+    "eonasdan-bootstrap-datetimepicker": "^0.0.7",
+    "jquery": "^3.7.1",
+    "jquery-datepair": "^1.2.0",
+    "jquery-timepicker": "^1.3.3",
+    "jquery-ui": "^1.13.3",
+    "jquery-validation": "^1.20.0",
+    "jquery-validation-unobtrusive": "^4.0.0",
+    "moment": "^2.30.1",
+    "quill": "^1.3.7",
+    "showdown": "^2.1.0",
+    "to-markdown": "^8.0.0"
+  },
+  "devDependencies": {
+    "esbuild": "^0.24.0"
+  }
+}