Initialize Eigen HRIS project

- Add .gitignore, .yarnrc.yml, and initial project metadata (AGENTS.md, DESIGN.md, package.json, Yarn lock, Tailwind, PostCSS, Next.js config, TypeScript config)
- Add CSV data files (users, employees, contracts, attendances)
- Implement API routes for auth, employees, contracts, attendances, analytics, and file upload
- Add core pages (dashboard, employees, attendances, profile, login, main layout)
- Add UI components (avatar, avatar picker, badge, button, card, input, modal, select, sidebar, navigation shell, top header)
- Add attendance features (table, clock widget, unified permit modal with file upload, upload API)
- Add employee management (contract timeline with file upload, employee form modal, employee table)
- Add dashboard widgets (leaderboard, early bird, latecomer, night owl, day status feed, date filter bar)
- Add utilities (avatar generator, analytics calculations, CSV DB layer, auth context)
- Add type definitions for auth, employee, contract, attendance, dashboard

All changes are synchronized with documentation (AGENTS.md, DESIGN.md, walkthrough).

tsconfig.json

@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}