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* feat(daemon): add pi coding agent adapter Add pi (https://pi.dev) as a supported coding agent, using its --mode rpc JSON-RPC protocol over stdio for structured event streaming. Changes: - apps/daemon/pi-rpc.js: new RPC session handler that drives pi's --mode rpc protocol, translating typed agent events (text_delta, thinking_delta, tool_use, tool_result, usage, status) into the daemon's UI event format. Auto-resolves extension UI requests (fire-and-forget consumed, dialogs auto-approved) so pi stays unblocked in the headless web UI. Kills the process after agent_end since pi's RPC process is designed for multi-prompt sessions. - apps/daemon/agents.js: add pi agent definition with custom fetchModels (pi --list-models outputs to stderr, not stdout), 575+ models from 20+ providers, reasoning/thinking level support via --thinking flag, and streamFormat 'pi-rpc'. - apps/daemon/server.js: wire pi-rpc stream format to attachPiRpcSession; skip stdin.end() for pi-rpc since the RPC session manages stdin bidirectionally. - apps/daemon/acp.js: export createJsonLineStream for reuse by pi-rpc.js. - apps/daemon/pi-rpc.test.mjs: 19 unit tests covering model list parsing (TSV, dedup, edge cases), RPC event translation (text, thinking, tools, usage, compaction, retry), sendCommand wire format, extension UI auto-resolution. - e2e/tests/structured-streams.test.ts: add pi RPC tool_use/tool_result event mapping test alongside existing Claude/Copilot fixtures. Verified end-to-end: daemon /api/chat → pi RPC → SSE stream with status, text_delta, usage, and tool events. Live E2E test passes (OD_E2E_RUNTIMES=pi). All 59 project tests green. * refactor(daemon): migrate pi-rpc to TypeScript Follow upstream #118 TypeScript migration convention: rename pi-rpc.js → pi-rpc.ts and pi-rpc.test.mjs → pi-rpc.test.ts with @ts-nocheck header (same as all other daemon modules). Import paths remain ./pi-rpc.js per NodeNext module resolution. * fix(daemon): avoid duplicate usage events in pi-rpc handler Pi emits both message_end and turn_end per turn, both carrying usage data. Emitting from both handlers caused double-counting in the UI and any consumer that aggregates usage. Remove usage emission from the message_end branch since turn_end is the canonical per-turn usage source. Keep tool call extraction in message_end (unique data not available in turn_end). Add regression test confirming exactly one usage event is emitted when both message_end and turn_end carry usage for the same turn. Addresses Copilot P2 review on PR #117. * fix(daemon): scope pi RPC id counter per session, bump graceful shutdown Move nextRpcId and sendCommand inside attachPiRpcSession as local state, matching the pattern in acp.ts where nextId is scoped per session. Prevents RPC id collisions across concurrent /api/chat requests. Bump post-agent_end SIGTERM grace period from 2s to 5s and make it configurable via PI_GRACEFUL_SHUTDOWN_MS env var for resource- constrained machines. Add test confirming concurrent sessions get independent id sequences. * fix(daemon): wrap parser.feed in try-catch in pi-rpc Catch errors from parser.feed and route them through the existing fail() handler instead of letting them propagate as unhandled exceptions. |
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