ci: cache turbo, npx and Metro; install web deps before copying code

- ci-ts restores the local turbo cache, so unchanged packages skip
  typecheck, test and build
- ci-mobile caches the npx copy of expo-doctor and Metro's transform cache
- the web image copies only workspace manifests before pnpm install, so the
  dependency layer survives code changes (CI docker job and update.sh)
- docs: table of what is cached where

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitea/workflows/ci-ts.yml

@@ -40,6 +40,12 @@ jobs:
       - uses: actions/setup-node@v4
         with: { node-version: "22", cache: pnpm }
       - run: pnpm install --frozen-lockfile
+      # Локальный кэш turbo: typecheck/test/build пропускаются для пакетов, чьи входы не менялись
+      - uses: actions/cache@v4
+        with:
+          path: .turbo/cache
+          key: turbo-ts-${{ github.sha }}
+          restore-keys: turbo-ts-
       - run: pnpm i18n:check
       - run: pnpm test:scripts
       - run: pnpm typecheck