Document why /tasks JSON errors need one stdout contract

Constraint: ROADMAP-only dogfood follow-up for 16:00 nudge on rebuilt claw git_sha 58569131
Rejected: code change in the command dispatcher | request was specifically to add one ROADMAP.md-only item
Confidence: high
Scope-risk: narrow
Directive: Keep /tasks distinct from #340; this is unsupported command stub JSON, not session help
Tested: git diff --check; scripts/fmt.sh --check
Not-tested: runtime behavior change, because this commit only documents the gap
This commit is contained in:
Yeachan-Heo 2026-04-29 16:02:10 +00:00
parent 5856913104
commit f4b74e89dd

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@ -6279,3 +6279,5 @@ Original filing (2026-04-18): the session emitted `SessionStart hook (completed)
339. **`/session delete` is not resume-safe while `/session list` is, making session GC impossible from `--resume` mode automation** — dogfooded 2026-04-30 by Jobdori on `24ccb59`. Running `claw --output-format json --resume latest /session list` succeeds and returns the full session list (10 sessions, all `workspace_dirty: true, abandoned: true`). Running `claw --output-format json --resume latest /session delete <id>` returns `{"command":"...","error":"unsupported resumed slash command","type":"error"}` — again using `"type"` not `"kind"` (#336 vocab violation). An automation lane that discovers abandoned sessions via `--resume` cannot delete any of them via the same path; it must spawn an interactive REPL session just to issue delete, breaking the machine-readable JSON surface contract. **Required fix shape:** (a) mark `/session delete` as resume-safe; (b) return `{"kind":"session_deleted","session_id":"<id>","path":"<deleted_path>"}` on success; (c) require `--force` only for dirty/active sessions; (d) add regression coverage. Source: Jobdori live dogfood, mengmotaHost, `24ccb59`, 2026-04-30.
340. **Resume-safe `/session help --output-format json` writes its primary JSON error envelope to stderr and uses `type` instead of the session JSON `kind` vocabulary** — dogfooded 2026-04-29 on current `origin/main` / rebuilt `./rust/target/debug/claw` with embedded `git_sha` `dc47482e`. Running `./rust/target/debug/claw --resume latest /session help --output-format json` wrote no stdout bytes, but wrote a JSON error object to stderr: `{"command":"/session help","error":"Unknown /session action ...","type":"error"}`. Meanwhile `/session list --output-format json` wrote valid stdout JSON with `kind=session_list`. The JSON output contract is therefore split across stderr for an error/help-ish action and switches vocabulary from `kind` to `type`; automation that reads stdout sees empty/non-JSON output and cannot handle errors consistently with successful session JSON responses. **Required fix shape:** (a) all `--output-format json` command responses, including resumed slash errors, should emit the primary JSON envelope on stdout; (b) use `kind:"error"` or a documented error schema consistently instead of an ad hoc `type` field; (c) reserve stderr prose for text mode or optional non-primary diagnostics, not the machine-readable envelope; (d) add a regression for `/session help` or an unsupported `/session` action under `--resume` proving stdout contains the structured JSON error envelope and stderr does not carry the only parseable payload. **Why this matters:** claws need one stdout JSON contract for both success and failure. If a help-ish session error is silently moved to stderr and shaped differently from `session_list`, orchestration lanes cannot distinguish an unsupported action from transport corruption or an empty response without bespoke stderr parsing. Source: gaebal-gajae dogfood follow-up for the 15:30 nudge on rebuilt `./rust/target/debug/claw` `dc47482e`.
341. **Resume-safe `/tasks --output-format json` emits an unsupported-command JSON error only on stderr and mixes `kind` with `type` classification vocabularies** — dogfooded 2026-04-29 for the 16:00 nudge on current `origin/main` / rebuilt `./rust/target/debug/claw` with embedded `git_sha` `58569131`. Running `./rust/target/debug/claw --resume latest /tasks --output-format json` wrote no stdout bytes, but wrote a JSON error object to stderr: `{"command":"/tasks","error":"/tasks is not yet implemented in this build","kind":"unsupported_command","type":"error"}`. The unsupported command envelope therefore has two separate top-level classification vocabularies (`kind=unsupported_command` and `type=error`) and places the only parseable payload on stderr, while successful JSON commands use stdout and a `kind`-only classification. This is distinct from #340 because it is not session help; it shows implemented-but-unsupported command stubs can emit a dual-vocabulary error envelope. **Required fix shape:** (a) in `--output-format json` mode, emit the primary JSON envelope on stdout for unsupported resumed slash commands such as `/tasks`; (b) document and use one error discriminator, preferably `kind:"error"` plus `code:"unsupported_command"`, or `kind:"unsupported_command"` plus `status:"error"`, but not `type`; (c) reserve stderr for non-primary diagnostics or text-mode prose, never as the sole JSON payload; (d) add regression coverage for `/tasks` under `--resume` with JSON output proving stdout contains the structured error envelope, stderr is not the only parseable stream, and the envelope uses the documented single-vocabulary discriminator. **Why this matters:** claws need the same stdout JSON contract for implemented successes and implemented-but-unsupported stubs. If `/tasks` errors can silently move to stderr and advertise both `kind` and `type`, automation must special-case command stubs instead of applying one JSON error parser. Source: gaebal-gajae dogfood follow-up for the 16:00 nudge on rebuilt `./rust/target/debug/claw` `58569131`.