chore: prepare the 2.2.0 release (#660)

Bumps every version surface to 2.2.0, fixes a latent version-coupling bug in the
OCR runtime tests, and stops an absent GPU runner from silently stalling a
release.

Version surfaces: scripts/sync-version.sh covers the 11 workspaces, APP_VERSION,
and the docs release commands across all locales. Root package.json plus the
three surfaces the script never reaches are done by hand: the DOCKERHUB.md banner
and tag table, the docker-tags.md pinning table in 21 locales, and the example
runtimeVersion in tools/image/ocr.md in 21 locales. The release-notes archive step
is deliberately not pre-run, so the notes text stays editable until the release.

Latent bug: runtime-state rejects any runtime whose compatibility.snapotterVersion
is not exactly APP_VERSION, and five fixtures pinned the literal 2.1.0. Since
semantic-release rewrites APP_VERSION on every release, the first PR after any
bump would have gone red for a reason nobody would trace to the release. The
fixtures now derive from APP_VERSION.

GPU runner: sign-ocr-index needs verify-ocr-nvidia on self-hosted hardware, and
the gated manifest job needs ai-bundles, so a missing runner queued instead of
failing and produced no image tags. preflight-gpu-runner claims the same labels
with no dependencies, so it is scheduled first and validates the GPU before the
90-minute build. An API preflight is impossible because listing self-hosted
runners needs Administration:read, which GITHUB_TOKEN cannot hold, so RELEASE.md
carries the maintainer-side check.

apps/docs/ko/guide/getting-started.md

@@ -59,7 +59,7 @@ docker run -d --name SnapOtter -p 1349:1349 -v SnapOtter-data:/data ghcr.io/snap
 ```bash
 install -d -m 700 snapotter && cd snapotter
 curl --proto '=https' --tlsv1.2 -fsSLo docker-compose.yml \
-  https://raw.githubusercontent.com/snapotter-hq/SnapOtter/v2.1.0/docker/docker-compose.yml
+  https://raw.githubusercontent.com/snapotter-hq/SnapOtter/v2.2.0/docker/docker-compose.yml
 
 # Keep generated service credentials out of shell history and world-readable files.
 umask 077
@@ -72,7 +72,7 @@ docker compose -f docker-compose.yml pull
 docker compose -f docker-compose.yml up -d --no-build
 ```
 
-표준 [`docker/docker-compose.yml`](https://github.com/snapotter-hq/SnapOtter/blob/v2.1.0/docker/docker-compose.yml)에는 4개의 런타임 볼륨, 상태 확인, 리소스 제한, 내구성 있는 Redis 구성, 고정된 데이터베이스/캐시 이미지 및 현재 컨테이너 강화가 모두 포함됩니다. 처음 로그인한 후 즉시 기본 관리자 비밀번호를 변경하세요. 재현 가능한 배포를 위해 `latest`를 따르는 대신 SnapOtter 애플리케이션 이미지를 확인한 릴리스 태그 또는 다이제스트에 고정하세요.
+표준 [`docker/docker-compose.yml`](https://github.com/snapotter-hq/SnapOtter/blob/v2.2.0/docker/docker-compose.yml)에는 4개의 런타임 볼륨, 상태 확인, 리소스 제한, 내구성 있는 Redis 구성, 고정된 데이터베이스/캐시 이미지 및 현재 컨테이너 강화가 모두 포함됩니다. 처음 로그인한 후 즉시 기본 관리자 비밀번호를 변경하세요. 재현 가능한 배포를 위해 `latest`를 따르는 대신 SnapOtter 애플리케이션 이미지를 확인한 릴리스 태그 또는 다이제스트에 고정하세요.
 
 모든 환경 변수는 [구성](/ko/guide/configuration)을 참조하고 비밀, 네트워크 정책 및 백업 지침은 [보안 및 강화](/ko/guide/security)를 참조하세요.