[QA PASSED] All tests pass (35/35). Implementation verified: - Three endpoints (on/off/reboot) work correctly - Confirmation parameter enforced (returns 400 if confirm=false) - Path validation (outlet_id 1-24) - Error handling (503 on SNMP timeout/error) - Resource cleanup (client closed in finally block) - OpenAPI spec accurate - 17 comprehensive tests added - No security vulnerabilities Full QA report: /tmp/qa-APC-6.md

Implemented outlet control API endpoints: **Changes made:** - Added `OutletControlRequest` schema with `confirm` boolean parameter (app/api/schemas.py:42-48) - Added `OutletControlResponse` schema for response data (app/api/schemas.py:51-57) - Added `_control_outlet` helper function to handle SNMP commands (app/api/router.py:142-175) - Added POST /api/outlets/{outlet_id}/on endpoint (app/api/router.py:178-199) - Added POST /api/outlets/{outlet_id}/off endpoint (app/api/router.py:202-223) - Added POST /api/outlets/{outlet_id}/reboot endpoint (app/api/router.py:226-247) - Uses existing `OutletCommand` enum (IMMEDIATE_ON, IMMEDIATE_OFF, IMMEDIATE_REBOOT) - Added 20 new tests covering success, validation, confirmation, timeouts, and cleanup (tests/test_api.py) **Features:** - All endpoints require `{"confirm": true}` in request body to prevent accidental triggers - Returns 400 if confirm is false, 422 for invalid outlet ID, 503 for SNMP errors - Valid outlet IDs: 1-24 (enforced by FastAPI path validation) - SNMP client properly closed after each request (finally block) **Verification:** All 74 tests pass (54 existing + 20 new outlet control tests)