ci: add GitHub Actions deploy workflow for 3 Workers

Auto-deploys on push to main when files in cypher-executor/, registry/,
or credentials/ change. Manual dispatch deploys all three.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -0,0 +1,67 @@
+name: Deploy Workers
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'cypher-executor/**'
+      - 'registry/**'
+      - 'credentials/**'
+
+jobs:
+  deploy-cypher-executor:
+    name: Deploy cypher-executor
+    runs-on: ubuntu-latest
+    if: contains(toJson(github.event.commits), 'cypher-executor') || github.event_name == 'workflow_dispatch'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Deploy
+        working-directory: cypher-executor
+        run: npx wrangler deploy
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+
+  deploy-registry:
+    name: Deploy registry
+    runs-on: ubuntu-latest
+    if: contains(toJson(github.event.commits), 'registry') || github.event_name == 'workflow_dispatch'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Deploy
+        working-directory: registry
+        run: npx wrangler deploy
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+
+  deploy-credentials:
+    name: Deploy credentials
+    runs-on: ubuntu-latest
+    if: contains(toJson(github.event.commits), 'credentials') || github.event_name == 'workflow_dispatch'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Deploy
+        working-directory: credentials
+        run: npx wrangler deploy
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+
+  # 手動觸發：部署全部三個 Worker
+  deploy-all:
+    name: Deploy all (manual)
+    runs-on: ubuntu-latest
+    if: github.event_name == 'workflow_dispatch'
+    needs: [deploy-cypher-executor, deploy-registry, deploy-credentials]
+    steps:
+      - run: echo "All workers deployed"