dashboard-project (PHP + MSSQL)

Implemented endpoints:
- /api/auth/seed_admin.php   (RUN ONCE, then delete)
- /api/auth/login.php
- /api/kpi/summary.php

Notes:
- index.php is intentionally NOT used (per your instruction).
- Update DB credentials in /src/config/db.php if needed.
- Auth is disabled by default for faster development: /src/config/app.php (auth_enabled=false)
- DB is set to DarianDW (with fallback to DarianDW_Dashboard) in /src/config/db.php
- All responses are JSON with {data, meta}.
