refactor: migrate to Turborepo 2.6.1 monorepo structure

- Restructure project: frontend/ → apps/web/, backend/ → apps/api/
- Remove unused shared packages (eslint-config, typescript-config, ui, shared)
- Each app now has self-contained ESLint and TypeScript configs
- Update all paths in CI workflows, Docker, Vercel, and Playwright configs
- Update pnpm-workspace.yaml to only include apps/*
- Keep api/ folder at root for Vercel serverless deployment
- All 386 tests passing, builds successful

Author: PhuocHoan

.github/workflows/ci.yml

@@ -10,8 +10,9 @@ on:
   push:
     branches: [main]
     paths:
-      - 'frontend/**'
-      - 'backend/**'
+      - 'apps/web/**'
+      - 'apps/api/**'
+      - 'packages/**'
       - 'e2e/**'
       - 'playwright.config.ts'
       - '.github/workflows/ci.yml'
@@ -20,8 +21,9 @@ on:
   pull_request:
     branches: [main]
     paths:
-      - 'frontend/**'
-      - 'backend/**'
+      - 'apps/web/**'
+      - 'apps/api/**'
+      - 'packages/**'
       - 'e2e/**'
       - 'playwright.config.ts'
       - '.github/workflows/ci.yml'
@@ -59,7 +61,8 @@ jobs:
     name: Backend
     uses: ./.github/workflows/reusable-ci.yml
     with:
-      project: backend
+      project: apps/api
+      filter: '@repo/api'
       test-command: pnpm test
 
   # ==========================
@@ -69,7 +72,8 @@ jobs:
     name: Frontend
     uses: ./.github/workflows/reusable-ci.yml
     with:
-      project: frontend
+      project: apps/web
+      filter: '@repo/web'
       test-command: pnpm test
 
   # ==========================
@@ -107,11 +111,11 @@ jobs:
         run: pnpm exec playwright install-deps chromium
 
       - name: Build frontend
-        run: pnpm --filter frontend build
+        run: pnpm --filter @repo/web build
 
       - name: Start frontend preview server
         run: |
-          cd frontend
+          cd apps/web
           pnpm preview --port 5173 &
           # Wait for server to be ready
           npx wait-on http://localhost:5173 --timeout 30000

.github/workflows/reusable-ci.yml

@@ -9,7 +9,11 @@ on:
   workflow_call:
     inputs:
       project:
-        description: Project name (backend or frontend)
+        description: Project directory path (e.g., apps/api or apps/web)
+        required: true
+        type: string
+      filter:
+        description: pnpm filter name (e.g., @repo/api or @repo/web)
         required: true
         type: string
       node-version:
@@ -46,12 +50,7 @@ jobs:
           node-version: ${{ inputs.node-version }}
 
       - name: Run TypeScript typecheck
-        run: |
-          if [ "${{ inputs.project }}" = "frontend" ]; then
-            pnpm exec tsc -p tsconfig.app.json --noEmit
-          else
-            pnpm exec tsc -p tsconfig.json --noEmit
-          fi
+        run: pnpm --filter ${{ inputs.filter }} typecheck
 
   lint:
     name: Lint
@@ -70,7 +69,7 @@ jobs:
           node-version: ${{ inputs.node-version }}
 
       - name: Run ESLint
-        run: pnpm lint
+        run: pnpm --filter ${{ inputs.filter }} lint
 
   test:
     name: Test
@@ -90,13 +89,13 @@ jobs:
           node-version: ${{ inputs.node-version }}
 
       - name: Run tests
-        run: ${{ inputs.test-command }}
+        run: pnpm --filter ${{ inputs.filter }} test
 
       - name: Upload coverage
         if: always()
         uses: actions/upload-artifact@v5
         with:
-          name: ${{ inputs.project }}-coverage
+          name: ${{ inputs.filter }}-coverage
           path: ${{ inputs.project }}/coverage
           retention-days: 7
           if-no-files-found: ignore
@@ -120,4 +119,4 @@ jobs:
           node-version: ${{ inputs.node-version }}
 
       - name: Build
-        run: pnpm build
+        run: pnpm --filter ${{ inputs.filter }} build

.gitignore

@@ -1,53 +1,46 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
 # Dependencies
-node_modules/
+node_modules
+.pnp
+.pnp.js
+
+# Local env files
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+*.env
+
+# Testing
+coverage
+test-results/
+playwright-report/
+
+# Turbo
+.turbo
 
-# Build outputs
-dist/
-build/
-coverage/
+# Vercel
+.vercel
 
-# Turborepo
-.turbo/
+# Build Outputs
+.next/
+out/
+build
+dist
 
-# Logs
-logs/
-*.log
+# Debug
 npm-debug.log*
-pnpm-debug.log*
 yarn-debug.log*
 yarn-error.log*
-lerna-debug.log*
 
-# Environment files
-.env
-.env.*
-!.env.example
-
-# OS
+# Misc
 .DS_Store
-Thumbs.db
+*.pem
 
 # IDE
 .idea/
-*.suo
-*.ntvs*
-*.njsproj
-*.sln
-*.sw?
-
-# Testing
-/.nyc_output
 
-# Uploaded files
+# Uploads (development)
 uploads/
-
-# Vercel
-.vercel/
-
-# Temporary
-.temp/
-.tmp/
-*.local
-
-# SSL certs
-ca.pem

.npmrc

@@ -0,0 +1 @@
+auto-install-peers=true

.vscode/settings.json

@@ -1,4 +1,7 @@
 {
-  "files.autoSave": "afterDelay",
-  "editor.fontFamily": "'JetBrainsMono Nerd Font', 'monospace', monospace"
+  "eslint.workingDirectories": [
+    {
+      "mode": "auto"
+    }
+  ]
 }

Makefile

@@ -1,11 +1,12 @@
-.PHONY: help up down db logs clean pre e2e
+.PHONY: help up down db logs clean build pre e2e
 
 help:
 	@echo "make up    - Start all services"
 	@echo "make down  - Stop all services"
 	@echo "make db    - Start PostgreSQL only"
 	@echo "make logs  - View logs"
 	@echo "make clean - Stop and remove volumes"
+	@echo "make build - Build all services"
 	@echo "make pre   - Run pre-commit checks"
 	@echo "make e2e   - Run end-to-end tests"
 
@@ -24,6 +25,9 @@ logs:
 clean:
 	docker compose down -v
 
+build:
+	pnpm build
+
 pre:
 	pnpm precommit