Two cleanups in one pass for the v1.14.0 'works on any platform' theme:
1. Response helpers — merged src/utils/responses.js and the root-level
response-helpers.js into a single module at src/utils/responses.js.
The old module had a richer set (created, noContent, validationError,
unauthorized, forbidden, notFound, conflict) and is now re-exported
from the new location. Updated 15 routes to import from
src/utils/responses and deleted the root response-helpers.js.
2. Error logger — error-handler.js now uses the unified
src/utils/logging.js#logError (same one src/app.js uses), so all errors
go to one log file with one rotation policy. Removed the dead
asyncHandler export (the real one is in src/utils/async-handler.js
and is used everywhere). Deleted the legacy error-logger.js.
Both are invisible to users — same HTTP response shapes, same log file
path, same error format. Internal-only refactor.
- Consolidated all error classes into single errors.js
- Removed duplicate error definitions (NotFoundError, etc.)
- Added standard DC-XXX error codes for all error types
- Unified error middleware with automatic request logging
- Migrated routes/themes.js to throw-based error pattern
- Updated routes/services.js to use ConflictError
- Cleaner server.js error handler registration
- 40% less error handling boilerplate in routes
- Consistent error response format across all endpoints