Add REST API endpoints for submitting visual verification tasks,
tracking progress via SSE, and retrieving screenshot/video artifacts.
Changes:
- Add ScopeVerifyRead/ScopeVerifyWrite auth scopes
- Create VerifyService for task submission and lifecycle management
- Create VerifyHandler with POST/GET/DELETE/SSE endpoints:
- POST /verify - Submit capture task
- GET /verify/{taskId} - Get task status and artifacts
- GET /verify/{taskId}/stream - SSE progress stream
- DELETE /verify/{taskId} - Cancel pending task
- GET /projects/{id}/verify - List verify tasks
- Wire VerifyExecutor in main.go for Playwright pod execution
- Fix work.go validation to include "verify" task type
- Add comprehensive handler tests
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
