Apple Events MCP Server

# Task 005: Production Error Handling Implementation ## Feature Production Error Handling - Add explicit development mode check with production-safe defaults. ## BDD Scenario ```gherkin Feature: Production Error Handling Scenario: Production mode sanitizes errors Given NODE_ENV="production" And DEBUG is not set And an internal error occurs When createErrorMessage generates the response Then "System error occurred" is returned Scenario: Undefined NODE_ENV defaults to production-safe Given NODE_ENV is undefined And DEBUG is not set And an internal error occurs When createErrorMessage generates the response Then "System error occurred" is returned ``` ## Files to Modify | File | Action | |------|--------| | `src/utils/errorHandling.ts` | Add `isDevelopmentMode()` helper function | ## Implementation Notes 1. Extract an `isDevelopmentMode()` helper function: - Check `NODE_ENV` for: `development`, `dev` - Check `DEBUG` for: `true`, `1` - Default to `false` (production-safe) if neither is set 2. Update `createErrorMessage()` to use the new helper: - Replace inline check with `isDevelopmentMode()` call - Ensure undefined `NODE_ENV` defaults to production-safe behavior 3. Export the helper function for testability ## Verification ```bash # Run the error handling tests pnpm test -- src/utils/errorHandling.test.ts # Expected: All environment mode tests pass ``` ## Dependencies - **depends-on**: Task 005 Test (task-005-error-handling-test.md) ## Commit ``` fix(errorHandling): add explicit development mode check ```