# Stage 10: Feature Application Service Layout

Date: 2026-07-29

## Result

- Created the governed `backend/features/<feature>` source boundary.
- Moved alert behavior into the alerts feature.
- Moved trade-journal behavior into the review feature.
- Moved strategy-tracking behavior into the screener feature.
- Changed the application container to import feature-owned services directly.
- Reduced the former top-level service modules to compatibility exports, preserving existing
  imports without maintaining duplicate implementations.
- Added dependency tests that prevent feature services from importing HTTP delivery code or
  concrete market-provider adapters.

## Template

Each migrated feature owns its application behavior and depends on repository or gateway
ports. HTTP delivery and background jobs may invoke the service, but neither may become the
owner of its rules. The same layout is now available for the remaining market, account,
Mentor, Wentian, and screener services.

## Compatibility

No route, response shape, persisted data, service method, or top-level import path changes in
this stage. Compatibility exports are removed only after all internal and external callers
use the feature packages.