Narrative: the streaming-json headless contract intermittently emitted only thought events then stopReason:Cancelled with zero text, leaving Chat replies silently empty; the adapter now spawns grok with --output-format json, buffers stdout, and parses the single JSON response on process close, with streaming-json parsing kept only as a diagnostic fallback.
- Change grok CLI invocation from --output-format streaming-json to --output-format json (cli-stream.ts)
- Add GrokCliJsonResponse type ({text, stopReason, sessionId, requestId, thought}) and parseJsonOutput() to stream-parser.ts, keeping legacy NDJSON line parsing for fallback/diagnostics
- Rework runtime-adapter.ts to buffer full stdout, parse it via parsePromptOutput (JSON object first, NDJSON fallback), and surface a formatTerminalNoTextDiagnostic when a non-EndTurn stopReason yields no assistant text
- Rename first-line/inactivity timeout bookkeeping from line-based to output/chunk-based (FIRST_OUTPUT_TIMEOUT_MS, firstOutputReceived, firstStdoutChunk) since stdout is no longer consumed via readline
- Update cli-stream/runtime-adapter/stream-parser tests to cover the JSON response path and the Cancelled/no-text diagnostic
- Update docs/grok-cli-contract.md and plugin README to document the json output-format contract and diagnostics
- Add changeset fn-7796-grok-cli-reliable-headless.md (patch, fix)
Files changed:
.changeset/fn-7796-grok-cli-reliable-headless.md | 7 +
docs/grok-cli-contract.md | 108 ++++++++-----
plugins/fusion-plugin-grok-runtime/README.md | 16 +-
.../src/__tests__/cli-stream.test.ts | 4 +-
.../src/__tests__/runtime-adapter.test.ts | 73 ++++++++-
.../src/__tests__/stream-parser.test.ts | 80 +++++----
.../fusion-plugin-grok-runtime/src/cli-stream.ts | 14 +-
.../src/runtime-adapter.ts | 180 ++++++++++++---------
.../src/stream-parser.ts | 65 ++++++--
plugins/fusion-plugin-grok-runtime/src/types.ts | 13 +-
10 files changed, 373 insertions(+), 187 deletions(-)
Fusion-Task-Id: FN-7796
Fusion-Task-Lineage: c920fcf0-98f8-42ec-867a-7f76c0aca1b7
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
c258fc1590