fix(release): restore automatic updates by shipping the speech engine on demand

Auto-update could not work at all: the installer was 189 MB because it carried
the local speech engine and ffmpeg, and the download feed rejects uploads over
about 100 MiB, so update metadata could never be published.

The installer now leaves those components out and the app fetches them the first
time they are needed, verifying every part and the joined archive before
installing. The installer is 90.6 MiB, the update feed is published again, and
updates stay small because the engine is not re-sent on every release.

The fetch is visible and recoverable: the download runs with progress, a failed
install cleans up after itself, and Settings > STT shows the runtime status with
a manual download action for when the automatic one cannot run.

docs/map/10-feature-catalog.md

@@ -194,6 +194,7 @@ Status quick-reference: `[x]` done+verified · `[~]` partial/unverified · `[ ]`
 | INFRA-15 | Update & release system | [x] | Canonical Forgejo feed + channels/policy (`release/update-policy.json`, `src/main/update-policy.ts`), canonical publisher `scripts/ci/publish-forgejo-release.mjs`, legacy GitLab mirror; `npm run release:metadata:test`. v1.1.0 was published to Forgejo on 2026-09-15; product version moved to `1.2.0` as a forward-fix with CI-only publication, a same-version re-release guard, and download centers that link the feed instead of repository paths. `1.3.0` (2026-09-18) carries the local-STT fixes; Windows publication still needs the CI signing secrets (`11` GAP-REL-02). |
 | INFRA-16 | Desktop STT engine packaging | [x] | `apps/desktop/scripts/setup-sidecar.mjs` + `build-sidecar.mjs`, `electron-builder.yml` `extraResources` (`sidecar-dist/sidecar` → `resources/sidecar`, `resources/ffmpeg`), and `scripts/ci/verify-sidecar-bundle.mjs` run in `package-windows`/`package-macos` before electron-builder. Verified on the real bundle: `sidecar.exe` + `_internal` including `faster_whisper/assets/silero_vad_v6.onnx`, plus a packaged-engine transcription round-trip on GPU. |
 | INFRA-17 | 서명 없는 배포 채널 (portable + Scoop) | [x] | `scripts/ci/build-portable.mjs` (95MiB 7z 분할 볼륨 + Scoop 매니페스트), `scripts/ci/publish-portable-release.mjs`, `scripts/local/install-d3ro-voice.ps1`, `bucket/` 버킷, `.forgejo/workflows/portable.yml`; 7z 분할 볼륨(Scoop, 162MiB) + zip 분할 부품(수동 설치, 243MiB, 7-Zip 불필요); updater feed와 분리. 2026-09-18 `portable-1.3.1` 게시 + 실제 설치 검증. |
+| INFRA-18 | 로컬 런타임 온디맨드 설치 | [x] | `RuntimeProvisioner`(부품 다운로드 + SHA-256 검증 + tar 해제, `%APPDATA%/d3ro-voice/runtime`), `POST runtime:ensure` / `runtime:progress` IPC, 설정 > STT 상태/내려받기 UI. 설치본에서 엔진/ffmpeg를 분리해 189MB → 90.6MiB, 업데이트 피드 게시 복구. 2026-09-18 실제 feed 통합 검증(엔진 94.4MiB/17초, ffmpeg 21.7MiB/5초). |
 
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