Merge feature/ticket74-web-transport-bundle into develop

Intègre les tickets #68 (packaging des assets web en ressource Tauri) et
#74 (le serveur embarqué servait le bundle desktop au navigateur).

Le frontend produit désormais deux artefacts Vite distincts : dist
(transport tauri, build.frontendDist) et dist-web (transport http,
packagé en ressource « web/ »). Le garde-fou de build échoue si un
bundle résout le mauvais transport.

Les deux tickets ferment ensemble : le packaging #68 servait le bundle
cassé, il ne pouvait pas être déclaré vert sans le fix #74. Validation
live utilisateur verte derrière reverse proxy.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.ideai/memory/MEMORY.md

@@ -64,3 +64,4 @@
 - [idea-distribution-strategy-desktop-vs-docker](idea-distribution-strategy-desktop-vs-docker.md) — memory note idea-distribution-strategy-desktop-vs-docker
 - [web-client-is-single-column-no-desktop-shell](web-client-is-single-column-no-desktop-shell.md) — memory note web-client-is-single-column-no-desktop-shell
 - [sandbox-eperm-bind-false-green-web-server](sandbox-eperm-bind-false-green-web-server.md) — memory note sandbox-eperm-bind-false-green-web-server
+- [ticket74-f1-web-bundle-transport-seam](ticket74-f1-web-bundle-transport-seam.md) — Deux artefacts Vite (dist/dist-web), mode `web` portable Windows, et le câblage anti-divergence de la constante de transport.

.ideai/memory/ticket74-f1-web-bundle-transport-seam.md

@@ -0,0 +1,18 @@
+---
+name: ticket74-f1-web-bundle-transport-seam
+description: Deux artefacts Vite (dist/dist-web), mode `web` portable Windows, et le câblage anti-divergence de la constante de transport.
+metadata:
+  type: reference
+---
+Le frontend produit **deux** artefacts Vite depuis les mêmes sources :
+- `frontend/dist` → transport `tauri` (desktop, `build.frontendDist`) — `npm run build`.
+- `frontend/dist-web` → transport `http` (packagé en ressource Tauri `web/`) — `npm run build:web`.
+- `npm run build:bundle` produit les deux : c'est le point d'entrée du packaging Tauri.
+
+**Le mode web passe par `--mode web` + `frontend/.env.web` (`VITE_TRANSPORT=http`), jamais par un préfixe inline `VITE_TRANSPORT=http vite build`** : non portable Windows/NSIS, cible active du bundle. `.env.web` est versionné (non gitignoré) ; `dist-web/` est ignoré.
+
+**Anti-divergence de `__IDEA_TRANSPORT__`** : `frontend/src/app/transport.ts` expose `transportFromEnv(value)`, importé à la fois par `di.tsx` (`resolveTransport`/`shouldUseHttp`) et par `vite.config.ts`, qui lui passe `VITE_TRANSPORT` via `loadEnv(mode)`. Même variable + même prédicat = une seule source. Modifier le prédicat déplace constante et runtime ensemble. `vitest.config.ts` réplique le `define` via le même helper.
+
+La constante est **publiée sur `window` dans `main.tsx`** : `define` ne remplace que les occurrences existantes et une constante non référencée serait tree-shakée ; l'affectation est un effet de bord qui survit à la minification. Elle reporte le transport hors mock (`VITE_USE_MOCK` reste un switch distinct).
+
+Pour identifier le transport d'un bundle bâti : `grep -o '__IDEA_TRANSPORT__="[a-z]*"' dist*/assets/*.js`. **Ne pas se fier à la présence de `__TAURI_INTERNALS__` ni à un nom de symbole minifié** : les deux jeux d'adapters sont présents dans les deux bundles, un grep ne les discrimine pas.

.ideai/tickets/74/carnet.md

@@ -0,0 +1,6 @@
+---
+issueRef: "#74"
+version: 2
+updatedBy: {"kind":"agent","agent_id":"a6ced819-b893-4213-b003-9e9dc79b9641"}
+updatedAt: 1784272247901
+---

.ideai/tickets/74/issue.md

@@ -0,0 +1,67 @@
+---
+id: "249bb0de-118f-4d6f-b0c4-1d4e2aadd83f"
+number: 74
+title: "Le serveur embarqué sert le bundle desktop (Tauri) au navigateur — __TAURI_INTERNALS__ undefined"
+status: "qa"
+priority: "high"
+sprint: null
+links: [{"target":"#68","kind":"relatesTo"},{"target":"#66","kind":"relatesTo"},{"target":"#13","kind":"relatesTo"}]
+agentRefs: []
+createdBy: {"kind":"agent","agent_id":"a6ced819-b893-4213-b003-9e9dc79b9641"}
+updatedBy: {"kind":"agent","agent_id":"a6ced819-b893-4213-b003-9e9dc79b9641"}
+createdAt: 1784271086298
+updatedAt: 1784272247901
+version: 2
+---
+## Symptôme (constaté live, exposition derrière reverse proxy)
+
+UI chargée dans le navigateur via `https://idea.anthonybouteiller.ovh` (nginx → 192.168.1.75:17373, serveur embarqué desktop, mode `remoteProxyOtherMachine`) :
+
+- `Error: can't access property "invoke", window.__TAURI_INTERNALS__ is undefined` (x2)
+- Aucun projet affiché.
+
+## Cause racine (confirmée)
+
+`crates/app-tauri/tauri.conf.json` utilise **un seul** `frontend/dist` pour deux besoins incompatibles :
+
+- `build.frontendDist: "../../frontend/dist"` + `beforeBuildCommand: "npm --prefix ../frontend run build"` → `vite build` **sans** `VITE_TRANSPORT` → bundle **desktop** (transport `tauri`).
+- `bundle.resources: { "../../frontend/dist": "web" }` → ce **même** bundle desktop est packagé en ressource `web/`.
+
+Or `resolve_web_root()` (`crates/app-tauri/src/embedded_server.rs:498-517`) sert `resource_dir.join("web")`. Le serveur embarqué sert donc le bundle desktop au navigateur.
+
+Le transport est figé **au build** par Vite : `resolveTransport()` (`frontend/src/app/di.tsx:39-46`) lit `import.meta.env.VITE_TRANSPORT`, constant-folded à la compilation.
+
+**Preuve** dans `frontend/dist/assets/index-nl-2Eu6U.js` (build du 2026-07-17 08:00) :
+
+```js
+function Cb(){return"tauri"}   // resolveTransport() figé sur tauri
+```
+
+Les deux jeux d'adapters sont bien présents dans le bundle, mais le sélecteur ne pointera jamais sur `createHttpWsGateways()`.
+
+## Attendu
+
+L'AppImage doit packager en ressource `web/` un bundle construit avec `VITE_TRANSPORT=http`, distinct du `frontendDist` desktop. Un seul `dist` ne peut pas servir les deux transports.
+
+## Contexte
+
+- `docs/server-client-mode-remote.md` documente déjà que le build web **doit** être produit en `VITE_TRANSPORT=http`, sinon exactement ce symptôme.
+- Le carnet de #13 avait classé ce symptôme en « erreur de commande de test, pas un bug de code » — vrai à l'époque de `idea --serve --web-root`, mais le packaging AppImage de #66/#68 réintroduit le problème par défaut.
+- #66 L4 anticipait le besoin (« produire les assets client Vite en `VITE_TRANSPORT=http` … packager dans `/usr/share/idea/web` ») ; la conf actuelle ne le fait pas.
+- npm, jamais pnpm (mémoire `frontend-uses-npm-not-pnpm`).
+
+## Workaround live
+
+Build séparé + `IDEA_WEB_ROOT` (premier candidat de `resolve_web_root`, court-circuite la ressource packagée) :
+
+```bash
+cd frontend && VITE_TRANSPORT=http npx vite build --outDir dist-web --emptyOutDir
+IDEA_WEB_ROOT=…/frontend/dist-web ./IdeA.AppImage
+```
+
+## DoD
+
+- Build AppImage produit une ressource `web/` en transport http, `frontendDist` desktop inchangé.
+- Vérif automatisable : le bundle servi ne doit pas résoudre le transport sur `tauri`.
+- Validation live navigateur derrière reverse proxy : UI + projets listés, aucune erreur `__TAURI_INTERNALS__`.
+- Rebuild AppImage livrable pour test utilisateur.

.ideai/tickets/counter.json

@@ -1,3 +1,3 @@
 {
-  "nextNumber": 74
+  "nextNumber": 75
 }

.ideai/tickets/index.json

@@ -768,6 +768,16 @@
       "sprint": null,
       "assignedAgentIds": [],
       "updatedAt": 1784223044517
+    },
+    {
+      "issueRef": "#74",
+      "path": "74",
+      "title": "Le serveur embarqué sert le bundle desktop (Tauri) au navigateur — __TAURI_INTERNALS__ undefined",
+      "status": "qa",
+      "priority": "high",
+      "sprint": null,
+      "assignedAgentIds": [],
+      "updatedAt": 1784272247901
     }
   ]
 }

crates/app-tauri/src/embedded_server.rs

@@ -162,6 +162,7 @@ impl FsServerExposureSettingsStore {
 /// Desktop-owned embedded server manager.
 pub struct EmbeddedServerController {
     app_data_dir: PathBuf,
+    resource_dir: Option<PathBuf>,
     store: FsServerExposureSettingsStore,
     inner: Mutex<EmbeddedServerInner>,
 }
@@ -170,9 +171,16 @@ impl EmbeddedServerController {
     /// Creates the controller.
     #[must_use]
     pub fn new(app_data_dir: PathBuf) -> Self {
+        Self::with_resource_dir(app_data_dir, None)
+    }
+
+    /// Creates the controller with the Tauri bundle resource directory.
+    #[must_use]
+    pub fn with_resource_dir(app_data_dir: PathBuf, resource_dir: Option<PathBuf>) -> Self {
         Self {
             store: FsServerExposureSettingsStore::new(app_data_dir.clone()),
             app_data_dir,
+            resource_dir,
             inner: Mutex::new(EmbeddedServerInner::default()),
         }
     }
@@ -237,7 +245,7 @@ impl EmbeddedServerController {
         let config = match server_config_from_settings(
             &settings,
             self.app_data_dir.clone(),
-            resolve_web_root()?,
+            resolve_web_root(self.resource_dir.as_deref())?,
         ) {
             Ok(config) => config,
             Err(err) => {
@@ -487,11 +495,25 @@ fn parse_ip(value: &str, field: &str) -> Result<IpAddr, ErrorDto> {
         .map_err(|_| invalid_error(format!("{field} must be an IP address")))
 }
 
-fn resolve_web_root() -> Result<PathBuf, ErrorDto> {
+fn resolve_web_root(resource_dir: Option<&Path>) -> Result<PathBuf, ErrorDto> {
+    let explicit_web_root = std::env::var_os("IDEA_WEB_ROOT").map(PathBuf::from);
+    let candidates = web_root_candidates(explicit_web_root, resource_dir);
+    first_web_root(candidates).ok_or_else(|| {
+        invalid_error("web assets not found: build frontend/dist or set IDEA_WEB_ROOT")
+    })
+}
+
+fn web_root_candidates(
+    explicit_web_root: Option<PathBuf>,
+    resource_dir: Option<&Path>,
+) -> Vec<PathBuf> {
     let mut candidates = Vec::new();
-    if let Some(path) = std::env::var_os("IDEA_WEB_ROOT").map(PathBuf::from) {
+    if let Some(path) = explicit_web_root {
         candidates.push(path);
     }
+    if let Some(resource_dir) = resource_dir {
+        candidates.push(resource_dir.join("web"));
+    }
     if let Ok(exe) = std::env::current_exe() {
         if let Some(dir) = exe.parent() {
             candidates.push(dir.join("web"));
@@ -501,12 +523,13 @@ fn resolve_web_root() -> Result<PathBuf, ErrorDto> {
     if let Ok(cwd) = std::env::current_dir() {
         candidates.push(cwd.join("frontend").join("dist"));
     }
+    candidates
+}
+
+fn first_web_root(candidates: impl IntoIterator<Item = PathBuf>) -> Option<PathBuf> {
     candidates
         .into_iter()
         .find(|candidate| candidate.join("index.html").is_file())
-        .ok_or_else(|| {
-            invalid_error("web assets not found: build frontend/dist or set IDEA_WEB_ROOT")
-        })
 }
 
 fn write_atomic_user_only(path: &Path, bytes: &[u8]) -> std::io::Result<()> {
@@ -588,6 +611,36 @@ mod tests {
         web_root
     }
 
+    #[test]
+    fn web_root_candidates_keep_packaged_resource_before_exe_fallbacks() {
+        let explicit = tmp_app_data().join("explicit-web-root");
+        let resource_dir = tmp_app_data().join("resources");
+
+        let candidates = web_root_candidates(Some(explicit.clone()), Some(&resource_dir));
+
+        assert_eq!(candidates[0], explicit);
+        assert_eq!(candidates[1], resource_dir.join("web"));
+    }
+
+    #[test]
+    fn first_web_root_uses_first_candidate_with_index_html() {
+        let missing = tmp_app_data().join("missing-web-root");
+        let resource_dir = tmp_app_data().join("resources");
+        let resource_web = resource_dir.join("web");
+        std::fs::create_dir_all(&resource_web).unwrap();
+        std::fs::write(
+            resource_web.join("index.html"),
+            "<!doctype html><title>Packaged</title>",
+        )
+        .unwrap();
+        let later = tmp_web_root();
+
+        let resolved = first_web_root([missing, resource_web.clone(), later])
+            .expect("web root should resolve");
+
+        assert_eq!(resolved, resource_web);
+    }
+
     #[test]
     fn non_loopback_remote_requires_trusted_proxy() {
         let settings = ServerExposureSettingsDto {

crates/app-tauri/src/lib.rs

@@ -96,13 +96,14 @@ pub fn run() {
                 .path()
                 .app_data_dir()
                 .expect("failed to resolve the app data directory");
+            let resource_dir = app.path().resource_dir().ok();
             // Point the orchestrator's best-effort diagnostics at a persistent file
             // (`<app-data>/logs/idea.log`) so inter-agent rendezvous beacons survive a
             // click-launched AppImage (whose stderr is otherwise discarded). Best-effort:
             // if the file can't be opened the beacons simply stay on stderr.
             application::diag::set_log_path(app_data_dir.join("logs").join("idea.log"));
             application::diag!("[startup] IdeA launched; diagnostics log armed");
-            let app_state = AppState::build(app_data_dir);
+            let app_state = AppState::build_with_resource_dir(app_data_dir, resource_dir);
 
             // Wire the domain event bus → Tauri events relay.
             events::spawn_relay(app.handle().clone(), &app_state.event_bus);

crates/app-tauri/src/state.rs

@@ -51,6 +51,13 @@ impl AppState {
     /// into the backend core.
     #[must_use]
     pub fn build(app_data_dir: PathBuf) -> Self {
+        Self::build_with_resource_dir(app_data_dir, None)
+    }
+
+    /// Builds the shared backend core with the Tauri bundle resource directory
+    /// available to desktop-only adapters.
+    #[must_use]
+    pub fn build_with_resource_dir(app_data_dir: PathBuf, resource_dir: Option<PathBuf>) -> Self {
         let core = Arc::new(BackendCore::build(app_data_dir.clone()));
         core.ticket_tool_binder
             .bind(Arc::new(AppTicketToolProvider {
@@ -69,7 +76,10 @@ impl AppState {
             core,
             pty_bridge: Arc::new(PtyBridge::new()),
             chat_bridge: Arc::new(ChatBridge::new()),
-            embedded_server: Arc::new(EmbeddedServerController::new(app_data_dir)),
+            embedded_server: Arc::new(EmbeddedServerController::with_resource_dir(
+                app_data_dir,
+                resource_dir,
+            )),
             focused_project: Mutex::new(None),
         }
     }

crates/app-tauri/tauri.conf.json

@@ -6,7 +6,8 @@
   "build": {
     "frontendDist": "../../frontend/dist",
     "devUrl": "http://localhost:5173",
-    "beforeDevCommand": "npm --prefix ../frontend run dev"
+    "beforeDevCommand": "npm --prefix ../frontend run dev",
+    "beforeBuildCommand": "npm --prefix ../frontend run build:bundle"
   },
   "app": {
     "windows": [
@@ -24,6 +25,9 @@
   "bundle": {
     "active": true,
     "targets": ["appimage", "nsis"],
-    "icon": ["icons/icon.png"]
+    "icon": ["icons/icon.png"],
+    "resources": {
+      "../../frontend/dist-web": "web"
+    }
   }
 }

frontend/.env.web

@@ -0,0 +1,7 @@
+# Vite mode `web` (`vite build --mode web`, ticket #74 lot F1): the bundle the
+# embedded server serves to a browser talks HTTP+WS instead of Tauri IPC.
+#
+# This lives in a mode env file rather than an inline `VITE_TRANSPORT=http vite
+# build` prefix because the npm scripts must also run on Windows (NSIS bundle),
+# where that shell syntax does not exist.
+VITE_TRANSPORT=http

frontend/package.json

@@ -6,6 +6,9 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc --noEmit && vite build",
+    "build:web": "tsc --noEmit && vite build --mode web --outDir dist-web --emptyOutDir",
+    "build:bundle": "npm run typecheck && vite build --outDir dist --emptyOutDir && vite build --mode web --outDir dist-web --emptyOutDir",
+    "test:bundle-transport": "node scripts/assert-bundle-transport.mjs",
     "typecheck": "tsc --noEmit",
     "preview": "vite preview",
     "test": "vitest run",

frontend/scripts/assert-bundle-transport.mjs

@@ -0,0 +1,78 @@
+import { readdir, readFile } from "node:fs/promises";
+import { join } from "node:path";
+
+const EXPECTED_TRANSPORT_BY_DIR = new Map([
+  ["dist", "tauri"],
+  ["dist-web", "http"],
+]);
+
+async function readJavaScriptAssets(buildDir) {
+  const assetsDir = join(process.cwd(), buildDir, "assets");
+  let entries;
+  try {
+    entries = await readdir(assetsDir, { withFileTypes: true });
+  } catch (error) {
+    throw new Error(
+      `Cannot read ${assetsDir}. Run npm run build:bundle before this check. ${error.message}`,
+    );
+  }
+
+  const files = entries
+    .filter((entry) => entry.isFile() && entry.name.endsWith(".js"))
+    .map((entry) => join(assetsDir, entry.name));
+
+  if (files.length === 0) {
+    throw new Error(`No JavaScript assets found in ${assetsDir}.`);
+  }
+
+  return Promise.all(
+    files.map(async (file) => ({
+      file,
+      source: await readFile(file, "utf8"),
+    })),
+  );
+}
+
+function transportMarkers(source) {
+  return [...source.matchAll(/__IDEA_TRANSPORT__="([a-z]+)"/g)].map(
+    (match) => match[1],
+  );
+}
+
+async function assertBundleTransport(buildDir, expectedTransport) {
+  const assets = await readJavaScriptAssets(buildDir);
+  const markers = assets.flatMap(({ file, source }) =>
+    transportMarkers(source).map((transport) => ({ file, transport })),
+  );
+
+  if (markers.length === 0) {
+    throw new Error(
+      `${buildDir} does not publish a __IDEA_TRANSPORT__ marker in its built JavaScript assets.`,
+    );
+  }
+
+  const unexpected = markers.filter(
+    ({ transport }) => transport !== expectedTransport,
+  );
+  if (unexpected.length > 0) {
+    const details = unexpected
+      .map(({ file, transport }) => `${file}: ${transport}`)
+      .join("\n");
+    throw new Error(
+      `${buildDir} resolves the wrong transport; expected ${expectedTransport}.\n${details}`,
+    );
+  }
+
+  console.log(
+    `${buildDir}: __IDEA_TRANSPORT__="${expectedTransport}" (${markers.length} marker${markers.length === 1 ? "" : "s"})`,
+  );
+}
+
+try {
+  for (const [buildDir, expectedTransport] of EXPECTED_TRANSPORT_BY_DIR) {
+    await assertBundleTransport(buildDir, expectedTransport);
+  }
+} catch (error) {
+  console.error(error instanceof Error ? error.message : error);
+  process.exitCode = 1;
+}

frontend/src/app/di.test.tsx

@@ -16,6 +16,7 @@ import {
   shouldUseMock,
   shouldUseHttp,
 } from "./di";
+import { transportFromEnv } from "./transport";
 
 afterEach(() => {
   vi.unstubAllEnvs();
@@ -66,6 +67,28 @@ describe("resolveTransport / web (HTTP+WS) selection (ticket #13, F1)", () => {
   });
 });
 
+describe("transportFromEnv (ticket #74, F1)", () => {
+  // The build config derives `__IDEA_TRANSPORT__` from this same predicate, so
+  // pinning it here pins both the runtime transport and the build constant.
+  it("selects http only for the exact opt-in value", () => {
+    expect(transportFromEnv("http")).toBe("http");
+  });
+
+  it.each([undefined, "", "tauri", "HTTP", "http ", "web"])(
+    "falls back to tauri for %o",
+    (value) => {
+      expect(transportFromEnv(value)).toBe("tauri");
+    },
+  );
+
+  it("agrees with shouldUseHttp for the value the build reads", () => {
+    vi.stubEnv("VITE_TRANSPORT", "http");
+    expect(shouldUseHttp()).toBe(transportFromEnv("http") === "http");
+    vi.stubEnv("VITE_TRANSPORT", "");
+    expect(shouldUseHttp()).toBe(transportFromEnv("") === "http");
+  });
+});
+
 describe("DIProvider / useGateways", () => {
   it("provides explicit gateways to consumers", () => {
     const gateways = resolveGatewaysMock();

frontend/src/app/di.tsx

@@ -18,11 +18,11 @@ import type { Gateways } from "@/ports";
 import { createTauriGateways } from "@/adapters";
 import { createMockGateways } from "@/adapters/mock";
 import { createHttpWsGateways } from "@/adapters/http";
+import { transportFromEnv, type Transport } from "./transport";
 
 const GatewaysContext = createContext<Gateways | null>(null);
 
-/** The selected transport backing the gateways. */
+export type { Transport };
-export type Transport = "mock" | "http" | "tauri";
 
 /** Whether the mock adapters should be used (env-driven, overridable in tests). */
 export function shouldUseMock(): boolean {
@@ -36,14 +36,13 @@ export function shouldUseMock(): boolean {
  * and is never affected (ticket #13, lot F1).
  */
 export function shouldUseHttp(): boolean {
-  return import.meta.env.VITE_TRANSPORT === "http";
+  return transportFromEnv(import.meta.env.VITE_TRANSPORT) === "http";
 }
 
 /** Resolves which transport to use. Mock wins, then explicit web, else Tauri. */
 export function resolveTransport(): Transport {
   if (shouldUseMock()) return "mock";
-  if (shouldUseHttp()) return "http";
+  return transportFromEnv(import.meta.env.VITE_TRANSPORT);
-  return "tauri";
 }
 
 /** Resolves the gateway set for the current environment. */

frontend/src/app/main.tsx

@@ -19,6 +19,14 @@ if (!root) {
 // follows the main window's focused project; otherwise the full app.
 const viewParams = parseViewWindowParams(window.location.search);
 
+// Ticket #74, F1: publish the transport this bundle was built for. `define`
+// inlines it as a literal, and assigning it is a side effect, so it survives
+// minification and tree-shaking — a built bundle can be identified (by QA, or
+// from devtools) without grepping for a minified symbol. Both adapter sets ship
+// in either bundle, so their mere presence proves nothing.
+(window as unknown as { __IDEA_TRANSPORT__?: string }).__IDEA_TRANSPORT__ =
+  __IDEA_TRANSPORT__;
+
 // Ticket #13, F2: in web (HTTP) transport mode the browser client renders the
 // pairing-gated, read-only `WebApp`. Desktop (Tauri) is unchanged — it renders
 // the full `App` (or a detached view window). Detached windows are desktop-only.

frontend/src/app/transport.ts

@@ -0,0 +1,19 @@
+/**
+ * The transport signal, shared by the app and the Vite build config.
+ *
+ * `vite.config.ts` imports {@link transportFromEnv} to compute the
+ * `__IDEA_TRANSPORT__` build constant from the very same `VITE_TRANSPORT`
+ * variable that {@link shouldUseHttp} reads (ticket #74, F1). One predicate,
+ * one variable: the greppable constant and the resolved transport cannot drift.
+ */
+
+/** The selected transport backing the gateways. */
+export type Transport = "mock" | "http" | "tauri";
+
+/**
+ * The transport a raw `VITE_TRANSPORT` value selects, mock aside. Web is opt-in
+ * (`"http"`) so the desktop path stays the default and is never affected.
+ */
+export function transportFromEnv(value: string | undefined): "http" | "tauri" {
+  return value === "http" ? "http" : "tauri";
+}

frontend/src/vite-env.d.ts

@@ -9,3 +9,15 @@ interface ImportMetaEnv {
 interface ImportMeta {
   readonly env: ImportMetaEnv;
 }
+
+/**
+ * The transport this bundle was built for, inlined as a literal by Vite
+ * `define` (ticket #74, F1). It is derived in `vite.config.ts` from the same
+ * `VITE_TRANSPORT` variable and the same `transportFromEnv()` predicate that
+ * `resolveTransport()` uses, so it always agrees with the adapters actually
+ * wired in — mock aside, which is a separate `VITE_USE_MOCK` switch.
+ *
+ * `main.tsx` publishes it on `window`, which makes it survive minification and
+ * lets a built bundle be identified without grepping for a minified symbol.
+ */
+declare const __IDEA_TRANSPORT__: "http" | "tauri";

frontend/vite.config.ts

@@ -1,16 +1,33 @@
-import { defineConfig } from "vite";
+import { defineConfig, loadEnv } from "vite";
 import react from "@vitejs/plugin-react";
 import tailwindcss from "@tailwindcss/vite";
 import { fileURLToPath, URL } from "node:url";
 
+import { transportFromEnv } from "./src/app/transport";
+
+const root = fileURLToPath(new URL(".", import.meta.url));
+
 // Vite config tuned for Tauri v2 (fixed dev port, no clearing the terminal).
-export default defineConfig({
+//
+// Two build artefacts (ticket #74): the default mode emits the desktop bundle
+// (`dist`, Tauri IPC transport), and `--mode web` reads `.env.web` to emit the
+// browser bundle served by the embedded server (`dist-web`, HTTP+WS transport).
+export default defineConfig(({ mode }) => {
+  // Same env file resolution Vite applies to `import.meta.env`, so the
+  // `__IDEA_TRANSPORT__` constant below is computed from the exact variable
+  // `resolveTransport()` reads, through the exact same predicate (#74, F1).
+  const env = loadEnv(mode, root);
+
+  return {
     plugins: [react(), tailwindcss()],
     resolve: {
       alias: {
         "@": fileURLToPath(new URL("./src", import.meta.url)),
       },
     },
+    define: {
+      __IDEA_TRANSPORT__: JSON.stringify(transportFromEnv(env.VITE_TRANSPORT)),
+    },
     clearScreen: false,
     server: {
       port: 5173,
@@ -20,4 +37,5 @@ export default defineConfig({
       target: "es2021",
       outDir: "dist",
     },
+  };
 });

frontend/vitest.config.ts

@@ -3,6 +3,8 @@ import { defineConfig } from "vitest/config";
 import react from "@vitejs/plugin-react";
 import { fileURLToPath, URL } from "node:url";
 
+import { transportFromEnv } from "./src/app/transport";
+
 // Vitest config for the frontend hexagonal layers (domain/ports/adapters/app).
 // jsdom is used so React-Testing-Library can render the DI provider.
 export default defineConfig({
@@ -12,6 +14,13 @@ export default defineConfig({
       "@": fileURLToPath(new URL("./src", import.meta.url)),
     },
   },
+  // Mirrors the build constant (#74, F1) through the same predicate, so code
+  // reading `__IDEA_TRANSPORT__` stays testable.
+  define: {
+    __IDEA_TRANSPORT__: JSON.stringify(
+      transportFromEnv(process.env.VITE_TRANSPORT),
+    ),
+  },
   test: {
     environment: "jsdom",
     globals: true,