perf: Fix all 7 code analysis issues
HIGH (Performance):
- Replace 8 sync file operations with aiofiles in async context (storage, mail,
report_generator, dms_bridge, ai_assistant)
- Frontend bundle splitting: manualChunks for react-vendor, ui-components, tanstack,
markdown, icons, utils, i18n (ui chunk 936K → ~19K)
MEDIUM (Architecture):
- Worker circular deps: Replace direct plugin imports with job_registry.py pattern
(register_job/get_all_jobs, importlib-based lazy loading)
- App-wide ErrorBoundary: New ErrorBoundary.tsx component, wrapped in AppShell
and all standalone routes
LOW (Code Quality):
- N+1 query fix: selectinload(Contact.contact_persons) in list_contacts()
- O(n²) dedup fix: SQL GROUP BY for email/phone duplicates, Dict-based name grouping
- Response format standardization: 7 routes converted from plain arrays to
{items: [...], total: N} format
Agent Zero
aaa7406929