## Summary
- route main-process `$exception` telemetry through
`posthog.captureException()` in the renderer
- normalize exception fields in IPC telemetry payloads and strip them
from extra context before capture
- add focused unit coverage for exception reconstruction and context
extraction

## Test plan
- npm run fmt && npm run lint:fix && npm run ts
- npm test

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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