Restructure/frontend editor (#6404)

## Move editor under `frontend/editor/`

Pure restructure: `frontend/` becomes the workspace, `frontend/editor/`
holds
  the PDF editor. 1775 file renames + 40 wiring edits. No logic changes.

  ### Why

`frontend/` is currently the editor — its `src/`, `public/`,
`src-tauri/`,
  config files all sit at the root. Promoting `frontend/` to a
workspace and putting the editor in a sibling folder leaves room for
future
apps to drop in alongside it, sharing one `package.json` /
`node_modules` /
  lint config / Storybook.

  ### What moves

  frontend/
  ├── editor/                ← NEW: everything editor-specific
  │   ├── src/               ← was frontend/src/
  │   ├── public/            ← was frontend/public/
  │   ├── src-tauri/         ← was frontend/src-tauri/
│ ├── index.html, vite.config.ts, vitest.config.ts, playwright.config.ts
  │   ├── tsconfig*.json, tailwind.config.js, postcss.config.js
  │   ├── scripts/
  │   ├── .env, .env.desktop, .env.saas
  │   └── DeveloperGuide.md
├── package.json, package-lock.json, node_modules/ ← workspace install
  ├── eslint.config.mjs, .prettierrc, .prettierignore ← shared tooling
  ├── .gitignore
  └── README.md

  ### Wiring edits (40 files)

  - `.taskfiles/frontend.yml`, `desktop.yml`, `e2e.yml`
  - `build.gradle`, `app/core/build.gradle`
- `eslint.config.mjs`, `frontend/package.json`, `.gitignore`,
`.prettierignore`
  - `docker/frontend/Dockerfile`
  - 8 `.github/workflows/*.yml`, plus `.github/dependabot.yml`,
    `.github/config/.files.yaml`, `.github/labeler-config-srvaroa.yml`
  - `scripts/translations/**`
- Docs: `AGENTS.md`, `CLAUDE.md`, `ADDING_TOOLS.md`,
`DeveloperGuide.md`,
`WINDOWS_SIGNING.md`, `devGuide/HowToAddNewLanguage.md`,
`frontend/README.md`,
    `frontend/editor/DeveloperGuide.md`

Plus 3 renamed + edited: `editor/vite.config.ts` (env path +
node_modules
  walk-up), `editor/scripts/setup-env.mts` (renamed from `.ts` for
`import.meta.url`), `editor/scripts/build-provisioner.mjs` (resolve
src-tauri
  relative to script).

  ### Verification

  | Check | Result |
  |---|---|
  | `task frontend:typecheck:all` (6 variants) | exit 0 |
  | `task frontend:lint` (eslint + dpdm) | exit 0 |
  | `task frontend:format:check` | exit 0 |
  | `task frontend:test` | 657 tests pass, 50 files |
| `task frontend:build:{core,proprietary,saas,desktop,prototypes}` | all
green |
| `task desktop:build` | full Tauri pipeline →
`Stirling-PDF_2.11.0_x64_en-US.msi` |
  | `playwright test --list --project=stubbed` | 172 tests discovered |

`task desktop:build` exercises the heaviest path — Rust + WiX + MSI
bundle
against the moved `editor/src-tauri/`. If anything in the restructure
was
  wrong it wouldn't have built.

  ### Test plan

  - [ ] `frontend-validation.yml` green
  - [ ] `e2e-stubbed.yml` green
  - [ ] `tauri-build.yml` green on at least one platform
  - [ ] `check_toml.yml` runs on a translation-touching PR

---------

Co-authored-by: Claude Opus 4.7 (1M context) <[email protected]>

frontend/editor/src/proprietary/App.tsx

@@ -0,0 +1,90 @@
+import { Suspense } from "react";
+import { Routes, Route, useParams } from "react-router-dom";
+import { AppProviders } from "@app/components/AppProviders";
+import { AppLayout } from "@app/components/AppLayout";
+import { LoadingFallback } from "@app/components/shared/LoadingFallback";
+import { PreferencesProvider } from "@app/contexts/PreferencesContext";
+import { RainbowThemeProvider } from "@app/components/shared/RainbowThemeProvider";
+import Landing from "@app/routes/Landing";
+import Login from "@app/routes/Login";
+import Signup from "@app/routes/Signup";
+import AuthCallback from "@app/routes/AuthCallback";
+import InviteAccept from "@app/routes/InviteAccept";
+import ShareLinkPage from "@app/routes/ShareLinkPage";
+import ParticipantView from "@app/components/workflow/ParticipantView";
+import MobileScannerPage from "@app/pages/MobileScannerPage";
+import Onboarding from "@app/components/onboarding/Onboarding";
+
+// Import global styles
+import "@app/styles/tailwind.css";
+import "@app/styles/cookieconsent.css";
+import "@app/styles/index.css";
+import "@app/styles/auth-theme.css";
+
+// Import file ID debugging helpers (development only)
+import "@app/utils/fileIdSafety";
+
+// Minimal providers for mobile scanner - no API calls, no authentication
+function MobileScannerProviders({ children }: { children: React.ReactNode }) {
+  return (
+    <PreferencesProvider>
+      <RainbowThemeProvider>{children}</RainbowThemeProvider>
+    </PreferencesProvider>
+  );
+}
+
+// Participant signing page — token-gated, no login required
+function ParticipantViewPage() {
+  const { token } = useParams<{ token: string }>();
+  if (!token) return null;
+  return <ParticipantView token={token} />;
+}
+
+export default function App() {
+  return (
+    <Suspense fallback={<LoadingFallback />}>
+      <Routes>
+        {/* Mobile scanner route - no backend needed, pure P2P WebRTC */}
+        <Route
+          path="/mobile-scanner"
+          element={
+            <MobileScannerProviders>
+              <MobileScannerPage />
+            </MobileScannerProviders>
+          }
+        />
+
+        {/* Participant signing — public, token-gated, no auth required */}
+        <Route
+          path="/workflow/sign/:token"
+          element={
+            <MobileScannerProviders>
+              <ParticipantViewPage />
+            </MobileScannerProviders>
+          }
+        />
+
+        {/* All other routes need AppProviders for backend integration */}
+        <Route
+          path="*"
+          element={
+            <AppProviders>
+              <AppLayout>
+                <Routes>
+                  <Route path="/login" element={<Login />} />
+                  <Route path="/signup" element={<Signup />} />
+                  <Route path="/auth/callback" element={<AuthCallback />} />
+                  <Route path="/invite/:token" element={<InviteAccept />} />
+                  <Route path="/share/:token" element={<ShareLinkPage />} />
+                  {/* Main app routes - Landing handles auth logic */}
+                  <Route path="/*" element={<Landing />} />
+                </Routes>
+                <Onboarding />
+              </AppLayout>
+            </AppProviders>
+          }
+        />
+      </Routes>
+    </Suspense>
+  );
+}