Move unit tests from tests/unit/ to internal/ following Go conventions:
- tests/unit/api/* -> internal/api/* (WebSocket handlers, helpers, duplicate detection)
- tests/unit/audit/* -> internal/audit/* (alert, sealed, verifier tests)
- tests/unit/auth/* -> internal/auth/* (API key, keychain, user manager)
- tests/unit/crypto/kms/* -> internal/auth/kms/* (cache, protocol tests)
Update import paths in test files to reflect new locations.
Benefits:
- Tests live alongside the code they test
- Easier navigation and maintenance
- Clearer package boundaries
- Follows standard Go project layout
Update comprehensive test coverage:
- E2E tests with scheduler integration
- Integration tests with tenant isolation
- Unit tests with security assertions
- Security tests with audit validation
- Audit verification tests
- Auth tests with tenant scoping
- Config validation tests
- Container security tests
- Worker tests with scheduler mock
- Environment pool tests
- Load tests with distributed patterns
- Test fixtures with scheduler support
- Update go.mod/go.sum with new dependencies