Requires HTTP Basic Auth. Credentials: admin / secret123.

{"message": "Basic auth successful", "user": "admin"}

Returns a JWT token. Use with /auth/protected.

{"username": "admin", "password": "secret123"}

{"token": "eyJ...", "user": "admin"}

Requires Bearer token from /auth/login.

Authorization: Bearer <token>

{"message": "Access granted", "user": "admin"}

{"error": "Missing Bearer token. Send Authorization: Bearer <token> header. Get a token from POST /api/auth/login"}

Requires X-API-Key: testkey123 header.

{"message": "Valid API key", "key": "testkey123"}