chore: initialize monorepo with Turborepo and pnpm

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,48 @@
+# Dependencies
+node_modules
+.pnpm-store
+
+# Build outputs
+.next
+dist
+build
+out
+
+# Turborepo
+.turbo
+
+# Environment files
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+.env*.local
+
+# IDE
+.idea
+.vscode
+*.swp
+*.swo
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Debug logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# Testing
+coverage
+.nyc_output
+
+# TypeScript
+*.tsbuildinfo
+
+# Misc
+*.log
+*.pid
+*.seed