## Summary

Addresses the two "needs update" items from the weekly rules review in
#3238:

- **`rules/openai-reasoning-models.md`**: Replace reference to
non-existent `filterOrphanedReasoningParts()` with the actual function
`cleanMessage()` in `src/ipc/utils/ai_messages_utils.ts`.
- **`rules/chat-message-indicators.md`**: Replace `"in-progress"` with
`"pending"` to match the actual `CustomTagState` type (`"pending" |
"finished" | "aborted"`) defined in `src/components/chat/stateTypes.ts`.

Closes #3238.

## Test plan

- [x] Verified `cleanMessage()` exists at
`src/ipc/utils/ai_messages_utils.ts:67`
- [x] Verified `CustomTagState` type in
`src/components/chat/stateTypes.ts:1`
- [x] `npm run fmt && npm run lint:fix && npm run ts` passes
- [x] `npm test` passes (1139 tests)

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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---------
Co-authored-by: Will Chen <7344640+wwwillchen@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>