ci: add Cloudflare remote cache for Turborepo

Configure turborepo-remote-cache-cloudflare as the remote cache backend.
This commit can be reverted independently to disable remote caching.

.env.example

@@ -41,6 +41,14 @@ DB_URL='FULL_PATH_TO_YOUR_SQLITE_DB_FILE'
 
 TURBO_TELEMETRY_DISABLED=1
 
+# Turborepo remote cache (optional, for faster CI/local builds)
+# Uncomment and fill in to enable remote caching locally.
+# CI uses GitHub secrets for these values automatically.
+# TURBO_API=https://your-cache-worker.workers.dev
+# TURBO_TEAM=team_your_team
+# TURBO_TOKEN=your-turbo-token
+# TURBO_REMOTE_CACHE_SIGNATURE_KEY=your-signature-key
+
 # Comma-separated paths to Docker-compatible Unix sockets.
 # Useful for connecting to multiple runtimes (Docker + Podman) simultaneously.
 # When unset and no TCP hosts configured, defaults to /var/run/docker.sock.

.github/workflows/code-quality.yml

@@ -16,6 +16,10 @@ concurrency:
 env:
   FORCE_COLOR: 3
   SKIP_ENV_VALIDATION: true
+  TURBO_API: ${{ secrets.TURBO_API }}
+  TURBO_TEAM: ${{ secrets.TURBO_TEAM }}
+  TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
+  TURBO_REMOTE_CACHE_SIGNATURE_KEY: ${{ secrets.TURBO_REMOTE_CACHE_SIGNATURE_KEY }}
 
 jobs:
   lint:

turbo.json

@@ -1,5 +1,6 @@
 {
   "$schema": "https://turborepo.org/schema.json",
+  "remoteCache": { "signature": true },
   "globalEnv": ["CI", "NODE_ENV", "SKIP_ENV_VALIDATION"],
   "ui": "stream",
   "futureFlags": {