feat(web): add OpenAPI TypeScript codegen and CI freshness check

Генерируем api.gen.ts из docs/openapi.yaml (openapi-typescript), добавляем scripts/check-openapi-gen.sh в CI. Закрываем решение по X-Tenant-Id как unimplemented; обновляем docs/README под React/ReUI и apps/web.

Co-authored-by: Cursor <[email protected]>

.gitea/workflows/ci.yaml

@@ -150,15 +150,23 @@ jobs:
   # ---------------------------------------------------------------------------
   openapi:
     needs: [changes]
-    if: needs.changes.outputs.openapi == 'true'
+    if: needs.changes.outputs.openapi == 'true' || needs.changes.outputs.web == 'true'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: "20"
+          node-version: "22"
+      - name: Enable pnpm via corepack
+        run: corepack enable
       - name: Lint OpenAPI (Redocly)
         run: npx --yes @redocly/cli@1 lint docs/openapi.yaml
+      - name: Check OpenAPI→TS codegen is fresh
+        run: |
+          set -euxo pipefail
+          pnpm install --frozen-lockfile
+          chmod +x scripts/check-openapi-gen.sh
+          sh scripts/check-openapi-gen.sh
 
   # ---------------------------------------------------------------------------
   web: