ci: add build validation and fix claude-code dependency issue (#264)

* ci: add build validation and improve workflow structure

- Add backend build step and CLI execution test to catch runtime errors
- Use working-directory instead of cd commands for better readability
- Detect issues like missing exports (e.g., AbortError) early in CI

🤖 Generated with [Claude Code](https://claude.ai/code)

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

* ci: fix build failure by creating dummy frontend dist

- Add dummy frontend/dist creation before backend build
- Resolves copy-frontend.js existsSync check failure in CI
- Maintains build validation functionality without requiring full frontend build

🤖 Generated with [Claude Code](https://claude.ai/code)

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

* fix: downgrade @anthropic-ai/claude-code to 1.0.90 to resolve AbortError export issue

- Downgrade from 1.0.98 to 1.0.90 (last version with working AbortError export)
- Update all dependency declarations: backend/package.json, frontend/package.json, backend/deno.json
- Regenerate lock files for consistency
- Resolves "does not provide an export named AbortError" runtime error

🤖 Generated with [Claude Code](https://claude.ai/code)

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

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: sugyan

.github/workflows/ci.yml

@@ -10,6 +10,9 @@ jobs:
   backend:
     name: Backend
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: backend
     strategy:
       matrix:
         node-version: [20, 22, 24]
@@ -25,43 +28,55 @@ jobs:
           cache-dependency-path: backend/package-lock.json
 
       - name: Install backend dependencies
-        run: cd backend && npm ci
+        run: npm ci
 
       - name: Generate version.ts
-        run: cd backend && node scripts/generate-version.js
+        run: node scripts/generate-version.js
 
       - name: Setup Deno
         uses: denoland/setup-deno@v2
         with:
           deno-version: v2.x
 
       - name: Install and cache Deno dependencies
-        run: cd backend && deno install && deno cache cli/deno.ts
+        run: deno install && deno cache cli/deno.ts
 
       - name: Format check (Deno)
-        run: cd backend && deno task format:check
+        run: deno task format:check
 
       - name: Format check (Prettier)
-        run: cd backend && npm run format:check
+        run: npm run format:check
 
       - name: Lint (Deno)
-        run: cd backend && deno task lint
+        run: deno task lint
 
       - name: Lint (ESLint)
-        run: cd backend && npm run lint
+        run: npm run lint
 
       - name: Type check (Deno)
-        run: cd backend && deno task check
+        run: deno task check
 
       - name: Type check (TypeScript)
-        run: cd backend && npm run typecheck
+        run: npm run typecheck
 
       - name: Test
-        run: cd backend && npm run test
+        run: npm run test
+
+      - name: Create dummy frontend dist for build
+        run: mkdir -p ../frontend/dist && touch ../frontend/dist/dummy
+
+      - name: Build backend
+        run: npm run build
+
+      - name: Test built CLI
+        run: node dist/cli/node.js -h
 
   frontend:
     name: Frontend
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend
     strategy:
       matrix:
         node-version: [20, 22, 24]
@@ -77,22 +92,22 @@ jobs:
           cache-dependency-path: frontend/package-lock.json
 
       - name: Install dependencies
-        run: cd frontend && npm ci
+        run: npm ci
 
       - name: Format check
-        run: cd frontend && npm run format:check
+        run: npm run format:check
 
       - name: Lint
-        run: cd frontend && npm run lint
+        run: npm run lint
 
       - name: Type check
-        run: cd frontend && npm run typecheck
+        run: npm run typecheck
 
       - name: Test
-        run: cd frontend && npm test
+        run: npm test
 
       - name: Build
-        run: cd frontend && npm run build
+        run: npm run build
 
   # Summary job for branch protection rules
   ci-success:

backend/deno.json

@@ -24,7 +24,7 @@
     "node:process": "node:process",
     "commander": "npm:commander@^14.0.0",
     "hono": "jsr:@hono/hono@^4.8.5",
-    "@anthropic-ai/claude-code": "npm:@anthropic-ai/claude-code@1.0.98",
+    "@anthropic-ai/claude-code": "npm:@anthropic-ai/claude-code@1.0.90",
     "@logtape/logtape": "jsr:@logtape/logtape@^1.0.0",
     "@logtape/pretty": "jsr:@logtape/pretty@^1.0.0"
   }

backend/deno.lock

@@ -54,7 +54,7 @@
     "prepublishOnly": "npm run build && npm run test"
   },
   "dependencies": {
-    "@anthropic-ai/claude-code": "1.0.98",
+    "@anthropic-ai/claude-code": "1.0.90",
     "@hono/node-server": "^1.0.0",
     "@logtape/logtape": "^1.0.0",
     "@logtape/pretty": "^1.0.0",
@@ -74,6 +74,6 @@
     "vitest": "^2.0.0"
   },
   "peerDependencies": {
-    "@anthropic-ai/claude-code": "1.0.98"
+    "@anthropic-ai/claude-code": "1.0.90"
   }
 }

backend/package-lock.json

@@ -28,7 +28,7 @@
     "react-router-dom": "^7.6.2"
   },
   "devDependencies": {
-    "@anthropic-ai/claude-code": "1.0.98",
+    "@anthropic-ai/claude-code": "1.0.90",
     "@eslint/js": "^9.25.0",
     "@playwright/test": "^1.48.2",
     "@tailwindcss/vite": "^4.1.8",