# AGENTS.md

## Repo layout
- `pipeline-runner/` — C++ application built with PIP (Platform Independent Primitives).
- `pipeline-runner/src/main.cpp` — entry point, config loading, server start.
- `pipeline-runner/src/server.h/.cpp` — PIHTTPServer routes, all API endpoints.
- `pipeline-runner/src/pipeline.h/.cpp` — Pipeline/Prompt structs, JSON file I/O, log functions.
- `pipeline-runner/src/runner.h/.cpp` — async pipeline execution (PIThread + PIProcess per step).
- `pipeline-runner/src/messageutils.h/.cpp` — HTTP response helpers (JSON, error, success).
- `pipeline-runner/pipeline-runner.conf` — JSON config file (port, directories).
- `pipeline-runner/tests/` — gtest tests for pipeline storage and runner.
- `pipeline-runner/CMakeLists.txt` — CMake build config with PIP + gtest (FetchContent).
- `pipeline-runner/storage/pipelines/` — JSON files for persisted pipelines.
- `pipeline-runner/storage/logs/` — execution logs (one file per run).

## Dev commands
- Build: `cd pipeline-runner/build && cmake .. && make`
- Run: `cd pipeline-runner/build && ./pipeline-runner ../pipeline-runner.conf`
- Run tests: `cd pipeline-runner/build && ./test-pipeline-runner`
- Clean build: `rm -rf pipeline-runner/build && mkdir pipeline-runner/build && cd pipeline-runner/build && cmake .. && make`

## API endpoints
| Method | Path | Description |
|--------|------|-------------|
| GET | `/api/pipelines` | List all pipelines |
| POST | `/api/pipelines` | Create pipeline (JSON body) |
| GET | `/api/pipelines/{id}` | Get single pipeline |
| DELETE | `/api/pipelines/{id}` | Delete pipeline |
| POST | `/api/runs` | Start execution (`{"pipeline_id": "..."}`) |
| GET | `/api/runs/{run_id}/status` | Poll run status + step results |
| GET | `/api/runs/{run_id}/log` | Get log file contents |

## Key behaviors
- Pipeline execution runs `opencode run <text> --title <title>` per step via `PIProcess`.
- Pipeline stops on first step error (non-zero return code).
- Each run executes in a separate `PIThread`.
- CORS headers are added to all responses (`Access-Control-Allow-Origin: *`).
- Config is loaded from `pipeline-runner.conf` (JSON format).