Add biome + rolldown + lightningcss build pipeline for JS/CSS bundling & minification

- package.json with biome, rolldown, lightningcss devDependencies  
- biome.json: add CSS formatter support
- scripts/build-css.mjs: lightningcss resolves @import chain, bundles/minifies CSS  
- scripts/build-js.mjs: rolldown per-entry JS bundling (no code splitting)
- scripts/build.mjs: orchestrator for both CSS + JS
- scripts/check-build.mjs: staleness checker for CI/deploy guard
- justfile: add build, build-css, build-js, build-install, build-check recipes
- justfile: deploy recipe now runs build before deploy-code
- head.php + form-page.php: use dist/base.min.css instead of style.css
- All controllers + FormBootstrap: reference dist/*.min.{css,js}
- admin footer: load admin.min.js for all admin pages
- repertoire: use public.min.js instead of individual app JS files
- Fix stray '}' syntax error in admin.css line 305
- .gitignore: add app/public/assets/dist/

scripts/build-js.mjs

@@ -0,0 +1,64 @@
+#!/usr/bin/env node
+/**
+ * Build JS bundles: one self-contained file per entry point.
+ *
+ * Each bundle includes all its dependencies inline (no code splitting).
+ * Output: app/public/assets/dist/{admin,public,form,partage}.min.js
+ */
+
+import { rolldown } from "rolldown";
+import { resolve, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+import { writeFileSync, mkdirSync } from "node:fs";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const root = resolve(__dirname, "..");
+const jsDir = resolve(root, "app/public/assets/js/app");
+const distDir = resolve(root, "app/public/assets/dist");
+
+mkdirSync(distDir, { recursive: true });
+
+const entries = {
+  admin: resolve(jsDir, "admin-entry.js"),
+  public: resolve(jsDir, "public-entry.js"),
+  form: resolve(jsDir, "form-entry.js"),
+  partage: resolve(jsDir, "partage-entry.js"),
+};
+
+async function buildEntry(name, input) {
+  const bundle = await rolldown({
+    input,
+    resolve: { extensions: [".js"] },
+    output: {
+      format: "esm",
+      minify: true,
+    },
+  });
+
+  const { output } = await bundle.generate();
+  // output is an array of OutputChunks; we want the entry chunk
+  const entryChunk = output.find((c) => c.isEntry);
+  if (!entryChunk) {
+    console.error(`  ✗ ${name}.min.js — no entry chunk`);
+    return;
+  }
+
+  const outPath = resolve(distDir, `${name}.min.js`);
+  writeFileSync(outPath, entryChunk.code);
+
+  const size = Buffer.byteLength(entryChunk.code, "utf8");
+  console.log(`  ✓ ${name}.min.js (${size.toLocaleString()} bytes)`);
+}
+
+async function main() {
+  console.log("📦 Building JS bundles…\n");
+  for (const [name, input] of Object.entries(entries)) {
+    await buildEntry(name, input);
+  }
+  console.log("\n✅ JS bundles done\n");
+}
+
+main().catch((err) => {
+  console.error("❌ JS build failed:", err);
+  process.exit(1);
+});