Thomas Kosiewski 8c0fe6d5f2 feat(site): add chat debug API layer and panel utilities (#23919)
## Summary

Add API client methods, React Query builders, and unit tests for the chat debug endpoints. Add `debugPanelUtils` with coercion helpers that transform raw debug step data into structured display models for the Debug panel, and wire debug run streaming into the chat store.

This is PR 7/9 in the chat debug logging stack.

### Changes

- **API client** (`site/src/api/api.ts`): typed methods for all debug endpoints — list runs, list steps, get/set deployment logging, get/set user logging, set per-chat override.
- **React Query builders** (`site/src/api/queries/chats.ts`): `chatDebugRuns`, `chatDebugSteps`, `chatDebugLoggingConfig`, `userDebugLoggingConfig` query/mutation factories with `refetchInterval: 5000` for live polling.
- **Debug panel utilities** (`site/src/pages/AgentsPage/components/RightPanel/DebugPanel/debugPanelUtils.ts`): `coerceStepRequest` / `coerceStepResponse` that recursively parse nested JSONB into `StepRequestViewModel` / `StepResponseViewModel` with `MessagePart`, `ToolDef`, and `ToolCallPart` types. Includes `formatTokenSummary` (compact `3→5 tok` notation) and `compactDuration` helpers.
- **Unit tests**: coverage for coercion edge cases and formatting utilities.

### Stack overview

1. Database schema & SDK types
2. Types, context, and model normalization
3. Recorder, transport, and redaction
4. Service and summary aggregation
5. Chat lifecycle wiring
6. HTTP handlers and API docs
7. **→ Frontend API layer and panel utilities** (this PR)
8. Debug panel components and settings
9. Storybook stories

---
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2026-04-22 15:24:32 +02:00
2022-04-04 11:55:06 -05:00

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