Major improvements to the Pi local adapter:
Bug Fixes (Greptile-identified):
- Fix string interpolation in models.ts error message (was showing literal ${detail})
- Fix tool matching in parse.ts to use toolCallId instead of toolName for correct
multi-call handling and result assignment
- Fix dead code in execute.ts by tracking instructionsReadFailed flag
Feature Improvements:
- Switch from print mode (-p) to RPC mode (--mode rpc) to prevent agent from
exiting prematurely and ensure proper lifecycle completion
- Add stdin command sending via JSON-RPC format for prompt delivery
- Add line buffering in execute.ts to handle partial JSON chunks correctly
- Filter RPC protocol messages (response, extension_ui_request, etc.) from transcript
Cost Tracking:
- Extract cost and usage data from turn_end assistant messages
- Support both Pi format (input/output/cacheRead/cost.total) and generic format
- Add tests for cost extraction and accumulation across multiple turns
All tests pass (12/12), typecheck clean, server builds successfully.
