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]>

.taskfiles/desktop.yml

@@ -32,51 +32,51 @@ tasks:
     desc: "Build installer provisioner"
     platforms: [windows]
     cmds:
-      - node scripts/build-provisioner.mjs
+      - node editor/scripts/build-provisioner.mjs
 
   dev:
     desc: "Start Tauri desktop dev mode"
     deps: [prepare]
     ignore_error: true
     cmds:
-      - npx tauri dev --no-watch
+      - cd editor && npx tauri dev --no-watch
 
   build:
     desc: "Build Tauri desktop app (production)"
     deps: [prepare]
     cmds:
-      - npx tauri build
+      - cd editor && npx tauri build
 
   build:dev:
     desc: "Build Tauri desktop app (dev, no bundling)"
     deps: [prepare]
     cmds:
-      - npx tauri build --no-bundle
+      - cd editor && npx tauri build --no-bundle
 
   build:dev:mac:
     desc: "Build Tauri desktop .app bundle (macOS)"
     deps: [prepare]
     cmds:
-      - npx tauri build --bundles app
+      - cd editor && npx tauri build --bundles app
 
   build:dev:windows:
     desc: "Build Tauri desktop NSIS installer (Windows)"
     deps: [prepare]
     cmds:
-      - npx tauri build --bundles nsis
+      - cd editor && npx tauri build --bundles nsis
 
   build:dev:linux:
     desc: "Build Tauri desktop AppImage (Linux)"
     deps: [prepare]
     cmds:
-      - npx tauri build --bundles appimage
+      - cd editor && npx tauri build --bundles appimage
 
   clean:
     desc: "Clean Tauri/Cargo build artifacts"
     cmds:
       - task: jlink:clean
-      - cd src-tauri && cargo clean
-      - rm -rf dist build
+      - cd editor/src-tauri && cargo clean
+      - rm -rf editor/dist editor/build
 
   # ============================================================
   # JLink — Build bundled Java runtime for Tauri
@@ -98,17 +98,17 @@ tasks:
         platforms: [windows]
       - cmd: ./gradlew bootJar --no-daemon -PjpdfiumPlatforms={{.JPDFIUM_PLATFORMS}}
         platforms: [linux, darwin]
-      - mkdir -p frontend/src-tauri/libs
-      - cp app/core/build/libs/stirling-pdf-*.jar frontend/src-tauri/libs/
+      - mkdir -p frontend/editor/src-tauri/libs
+      - cp app/core/build/libs/stirling-pdf-*.jar frontend/editor/src-tauri/libs/
     status:
-      - test -f frontend/src-tauri/libs/stirling-pdf-*.jar
+      - test -f frontend/editor/src-tauri/libs/stirling-pdf-*.jar
 
   jlink:runtime:
     desc: "Create custom JRE with jlink"
     deps: [jlink:jar]
     cmds:
-      - rm -rf src-tauri/runtime/jre
-      - mkdir -p src-tauri/runtime
+      - rm -rf editor/src-tauri/runtime/jre
+      - mkdir -p editor/src-tauri/runtime
       - >-
         jlink
         --add-modules {{.JLINK_MODULES}}
@@ -116,14 +116,14 @@ tasks:
         --compress=zip-6
         --no-header-files
         --no-man-pages
-        --output src-tauri/runtime/jre
+        --output editor/src-tauri/runtime/jre
     status:
-      - test -d src-tauri/runtime/jre
+      - test -d editor/src-tauri/runtime/jre
 
   jlink:clean:
     desc: "Remove JLink runtime and bundled JARs"
     cmds:
-      - rm -rf src-tauri/libs src-tauri/runtime
+      - rm -rf editor/src-tauri/libs editor/src-tauri/runtime
 
   # macOS-only. Replaces jlink:runtime's single-arch JRE with a universal
   # (arm64 + x86_64) one for the universal Tauri shell. Runs the x86_64
@@ -136,6 +136,6 @@ tasks:
     platforms: [darwin]
     env:
       JLINK_MODULES: "{{.JLINK_MODULES}}"
-      OUTPUT_DIR: src-tauri/runtime/jre
+      OUTPUT_DIR: editor/src-tauri/runtime/jre
     cmds:
-      - scripts/build-universal-mac-jre.sh
+      - editor/scripts/build-universal-mac-jre.sh