fix: make a nested story spec's no-artifact timeout self-explaining (#780) - #856
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resultless-stops.jsonl has no reader, so a spec nested out of the flat unpinned read-back rode to timeout with no visible reason. The dev mixin now remembers each task's last resultless-stop crumb and run() folds it onto a non-completed SessionResult (new appended fields resultless_verdict / resultless_detail), after _post_kill_reconcile so a rescued result stays unannotated. The engine journals both present-only on session-end. Diagnostic only: no routing or completion path changes.
…780) devcontract.find_nested_result_hints probes the immediate, non-symlinked subdirectories of an artifacts dir with the existing result/frontmatter finders (launch floor kept, capped, deduped) and reports a listing fault instead of an empty answer. The unpinned no-artifact crumb appends the qualifying nested paths ("never read back") or the probe fault; the pinned path and wait=False reads never probe. Diagnosis only: nothing nested is harvested and the result scans stay flat. The stories pending crumb now names its glob and says it is flat: "no <id>-*.md directly under <base>/stories (subdirectories are not searched)". #820's nested-spec test now asserts the nested path, so it fails without its fixture.
…diagnosis Sprint mode's dev read-back reads only specs directly under the artifacts dir, so a spec kept in implementation-artifacts/stories/ rides to timeout. `validate` now warns `queue.nested-specs` in sprint mode on any *.md with a non-empty frontmatter `status:` one level down (non-symlinked subdirs only; unreadable files skipped; a listing fault is reported as a warning, never silence). Stories mode never runs it. Warning severity only: rc unchanged. Document the non-recursive scan, the nested-spec crumb, and the session-end resultless_verdict/resultless_detail fields in FEATURES.md and tui-guide.md, and add the #780 CHANGELOG entry.
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Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 0 remain after this review. WalkthroughNested specs remain outside artifact read-back, but unpinned scan diagnostics can identify qualifying nested specs and probe faults. Sprint-mode validation warns about qualifying nested specs. Non-completed session-end entries can include the latest resultless-stop verdict and detail. ChangesNested Spec Diagnostics
Run Removal Test Isolation
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant DevSynthesisMixin
participant SessionResult
participant Engine
participant Journal
DevSynthesisMixin->>DevSynthesisMixin: Retain latest resultless-stop verdict and detail
DevSynthesisMixin->>SessionResult: Add diagnostics to non-completed result
SessionResult->>Engine: Return session result
Engine->>Journal: Add truthy diagnostics to session-end fields
Suggested reviewers: Merge Risk: 🔵 Low · up to The change adds diagnostics for nested specs and is generally safe to merge. One minor gap remains: a nested spec file that is not valid UTF-8 may not trigger the validation warning. This only affects a diagnostic hint and can be followed up. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The reporting changes preserve completion and retry rules, but the new diagnostic scan can block or exhaust the local process when project-controlled files are adversarial. Exposure is limited to validation and affected development sessions; no additional execution privilege is established. Retained concerns
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The DW-519 tests patch the process-wide time.sleep and assert no backoff ran. delete_run/archive_run first run the live-session guard, whose tmux probe waits under a timeout; on a slow host Popen.wait polls with time.sleep and those sleeps land in the recorder (py3.14 CI on #856). Reproduced with a fake tmux that closes its pipes then lingers: all four rows fail without the stub.
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When a nested *.md exists but read_frontmatter() raises, for example because of EACCES or a transient I/O error, this preflight silently continues; if it is the only candidate, _validate_nested_specs receives [] and emits no queue.nested-specs finding. This makes a failed scan indistinguishable from a clean layout and can leave the same opaque timeout the check is intended to prevent, so preserve and report the read fault rather than dropping it.
AGENTS.md reference: AGENTS.md:L82-L83
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Valid — fixed in 76e7468. _nested_spec_files now returns (spec_like, unreadable), keeping each read fault instead of dropping it, and _validate_nested_specs emits its own queue.nested-specs warning that names the unreadable files and their errors (capped at 3 examples; detail.count is the total). A sole unreadable candidate now warns instead of reading as a clean layout. New test test_validate_nested_specs_reports_an_unreadable_sole_candidate was ablation-checked: it fails with the warning removed.
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A nested *.md whose frontmatter read raised was dropped, so a sole unreadable candidate left queue.nested-specs silent — a clean-layout answer the scan never earned. _nested_spec_files now returns the read faults beside the hits and validate warns on them.
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| marker = find_result_artifact(child, since_ns=since_ns) | ||
| found = [marker] if marker is not None else [] | ||
| found += find_frontmatter_candidates(child, since_ns=since_ns) |
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When a nested *.md is unreadable because of EACCES or a transient I/O error, both delegated finders silently convert their per-file OSError into no match, so this function returns ([], None) and _nested_spec_hint emits no probe fault. Although the follow-up fixed this behavior in the validate scan, this separate runtime path still leaves the resulting timeout indistinguishable from a genuinely empty nested layout; propagate or separately collect these read failures so the no-artifact detail reports them.
AGENTS.md reference: AGENTS.md:L82-L83
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Valid — fixed in 0bbafe9. The shared finders keep their documented degrade-to-no-match contract (they sit on the harvest path), so the fix stays inside find_nested_result_hints: each nested *.md the finders passed over is stat-ed and opened once more (only at/after the launch floor; a file deleted mid-probe is not a fault), and a failure is returned in the fault string as could not read <path>: <Error>. The crumb surfaces it through the existing subdirectory probe failed: suffix, and readable hits beside it are still named. New test test_nested_hints_report_an_unreadable_file_beside_a_hit was ablation-checked: it fails with the probe removed.
The finders degrade an unreadable file to no match by contract, so a nested spec that could not be opened left the #780 hint empty — the same clean-layout answer as no nested spec at all. The probe now opens each nested *.md the finders passed over (at/after the launch floor) and reports a read fault in the crumb's probe-failed suffix.
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| except OSError as e: | ||
| return [], f"{type(e).__name__}: {e}" |
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When an earlier subdirectory contains a qualifying nested spec but probing a later child raises OSError, this handler discards the accumulated hits and returns only the fault. Consequently, _nested_spec_hint omits the exact nested file and its move/use-stories-mode remedy from the session-end diagnostic, even though that evidence was successfully collected; return the accumulated hits together with the fault instead.
AGENTS.md reference: AGENTS.md:L82-L83
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Fixed in f35757d. Probing now catches OSError per subdirectory: the fault is recorded as could not probe <dir>: ... and the loop moves on, so hits already found in other subdirectories are kept. A failure listing impl_artifacts itself still returns ([], fault), because there are no hits yet at that point. Regression test: test_nested_hints_keep_earlier_hits_when_a_later_subdir_faults (ablated: fails when the per-child handler is removed).
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Review comments at @src/bmad_loop/cli.py:
- Around line 1886-1887: Update the nested Markdown diagnostic that calls
frontmatter.read_frontmatter to use strict UTF-8 decoding, or enable a parser
option that exposes decoding failures, so invalid UTF-8 reaches the
OSError-style fault collection and triggers the queue.nested-specs warning even
when it is the only unreadable file.
Review comments at @src/bmad_loop/devcontract.py:
- Around line 736-737: Update _unreadable to read the candidate file as UTF-8
instead of merely opening it, so read-time OSError exceptions are detected.
Preserve its existing FileNotFoundError and OSError handling, and treat
UnicodeDecodeError as no fault.
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…pen, in the probe A fault probing one subdirectory no longer discards the nested specs already found in others (Codex P2), and the unreadable probe reads the file the way the finders do, so a read-time OSError after a successful open is reported (CodeRabbit).
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| # 3.11 floor: Path.is_dir has no follow_symlinks=, so test the link first. | ||
| if child.is_symlink() or not child.is_dir(): | ||
| continue | ||
| marker = find_result_artifact(child, since_ns=since_ns) |
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If an immediate subdirectory contains a reader-less FIFO such as stories/result.md, find_result_artifact reaches read_text() on it and blocks indefinitely; _unreadable later has the same problem with its unbounded binary read. Because this probe runs synchronously while handling a resultless Stop, the adapter never returns to its session deadline, so one nested special file can hang the entire control loop. Check that candidates are regular files without following symlinks before invoking the existing finders or opening them.
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Not changing this one. The hazard is not new with this probe. The flat harvest scan already does the same read: find_result_artifact and find_frontmatter_candidates call read_text() on every *.md directly under impl_artifacts, with no regular-file check, on every resultless Stop. A FIFO there blocks the same synchronous path today. The nested probe reuses those finders on purpose, so it adds no qualification logic of its own. Guarding only the nested diagnosis would leave the harvest path, which runs far more often, exposed. A *.md FIFO in a spec directory is not a layout anyone produces, so a non-regular-file guard belongs in the shared finders as its own change, not in this diagnosis PR.
| hits.append(path) | ||
| if len(hits) >= limit: | ||
| return hits, "; ".join(faults) or None | ||
| for path in sorted(child.glob("*.md")): |
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When an immediate subdirectory can be statted but not enumerated, Python's Path.glob() suppresses the PermissionError and yields no paths, including in both delegated finders, so the surrounding except OSError is never reached and this function returns ([], None). Fresh evidence beyond the prior per-child exception fix is this Path.glob behavior: the resulting no-artifact detail still treats an uninspected directory as genuinely empty. Enumerate each child through an operation whose listing error can be captured and returned as a probe fault.
AGENTS.md reference: AGENTS.md:L82-L83
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Valid, fixed in 8ae7fb1. Path.glob does swallow EACCES on an unlistable directory and yield nothing (checked locally on 3.13). Each immediate subdirectory is now listed explicitly with os.listdir(child) before the finders run, so a listing fault reaches the existing per-child handler and is reported as could not probe <dir>: PermissionError: .... Hits from other subdirectories are still named. Regression test: test_nested_hints_report_an_unlistable_subdir, a real chmod 000 test skipped on Windows and as root. Ablated: it fails without the explicit listing.
| for child in sorted(impl.iterdir()): | ||
| if child.is_symlink() or not child.is_dir(): | ||
| continue | ||
| for path in sorted(child.glob("*.md")): |
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If impl/stories exists but the validating user lacks permission to enumerate it, child.is_dir() can still return true while child.glob("*.md") silently produces an empty iterator. Thus _nested_spec_files returns a clean empty result and _validate_nested_specs emits no warning, despite never checking the directory. Fresh evidence beyond the prior unreadable-file fix is that the real listing failure is swallowed inside Path.glob, so the outer except OSError cannot report it; use an explicit listing operation that preserves this fault.
AGENTS.md reference: AGENTS.md:L82-L83
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Valid, fixed in 8ae7fb1. _nested_spec_files now lists each subdirectory explicitly before globbing it. A listing fault is returned in unreadable as (dir, error), and queue.nested-specs warns on it like any other unreadable path (the message now says "path(s)" rather than "*.md file(s)"). A failure listing impl itself still propagates to the existing listing-fault warning. Regression test: test_validate_nested_specs_reports_an_unlistable_subdir, a real chmod 000 test skipped on Windows and as root. Ablated: it emits no finding without the explicit listing.
…ng it as empty Path.glob swallows a listing fault and yields nothing, so a nested subdirectory that could not be listed passed as "nothing nested" in both the no-artifact probe and validate's queue.nested-specs scan (Codex P2 x2). Each subdirectory is now listed explicitly first, and the fault is reported: as a probe fault in the crumb, and as an unreadable path in validate.
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What
A sprint-mode dev session whose spec sits one level down (for example
implementation-artifacts/stories/) used to ride to timeout with no visible reason. Now the reason shows up in three places:session-endcarries the verdict. A non-completed dev session'sSessionResultgets the last resultless-stop verdict asresultless_verdict/resultless_detail. These fields are appended afterparked_evidence. The engine journals them onsession-endonly when they are set.no-artifactcrumb names the nested file. The unpinned crumb inresultless-stops.jsonlnow lists any qualifying spec one level down: "qualifying spec(s) found in subdirectories, which are never read back: … — move the spec directly under the artifacts dir, or use stories mode ([stories] source) for a stories/ layout". The storiespendingcrumb now names its glob and says it is flat.validatewarns before any tokens are spent. In sprint mode,bmad-loop validatewarnsqueue.nested-specswhen an immediate non-symlinked subdirectory holds a*.mdwith a non-empty frontmatterstatus:. The warning gives a count and up to 3 examples. Severity is warning, so rc is unchanged. Stories mode never runs this check.Why
#780: the read-back's
*.mdglob is non-recursive. Theno-artifactcrumb has named the searched directory since v0.11.1, but nothing readstasks/<id>/resultless-stops.jsonl. It does not reach the journal, the TUI,status,diagnoseor--json. So the reporter never saw the explanation. The gap was visibility, not wording.The scan stays flat on purpose. Everything here is diagnostic. A nested hit is named and never read back as a result:
{implementation_artifacts}/spec-*.md.stories/is the stories-mode layout, which is read directly through the spec folder.rglobwould widen the Session read-back adopts another story's spec: a review that produced nothing is scored done #261 shared-dir hazard, the ambiguity refusals, and the DW-96 launch snapshot.Nothing here adds a completion path or changes routing. The new fields are forensics on an already non-completed result.
_post_kill_reconcileruns first, so a rescuedcompletedresult is never annotated.How
adapters/base.py:SessionResultgains the appended fieldsresultless_verdict/resultless_detail. Inadapters/generic.py,_DevSynthesisMixinrecords every_note_resultless_stopin_last_resultless, which is the fifth store_evict_task_stateevicts.run()folds it onto a non-completed result.engine._session_end_extrasjournals the fields only when present.devcontract.find_nested_result_hints: probes one level down, in sorted order, skipping symlinked dirs. It applies the launch floor, caps results at 3, and reuses the existing finders. A listing fault comes back as a fault string and is never treated as an empty answer. The probe runs only where the unpinnedwait=Truecrumb is written.cli._nested_spec_files/_validate_nested_specs: the sprint-branch preflight, with the new id registered inchecks.VALIDATE_CHECKS. The validate--jsonschema is unchanged, because a new finding id is additive.docs/FEATURES.md(failure-handling bullet) anddocs/tui-guide.md(thesession-endfields).Testing
New tests:
tests/test_generic_tmux.py: timeout, completed, rescued and eviction rows for the verdict fold; nested-hint rows for the marker spec, the frontmatter-only spec, a stale spec, a symlinked subdir, the pinned path, a probe fault, and a "never harvested" guard. fix(adapter): explain non-recursive artifact scan #820's nested test now asserts the nested path, so deleting its fixture makes it fail.tests/test_devcontract.py: unit tests for the hint finder.tests/test_engine.py: rows for the present-only extras.tests/test_cli.py: validate rows for the warning (rc 0), the stock project (no finding), the examples cap, plain.mdfiles and a blankstatus:, a symlinked subdir, stories mode, a listing fault, and an unreadable file.Each new gate was ablated, and its test fails without it.
Local results:
test_verify.py::test_path_clean_leaves_a_broken_gitfile_untyped, which also fails onmainwith local git 2.56 and is unrelated.uv run pyright: 0 errors.trunk check: clean.Closes #780
Changelog
### Fixed: "Surface why a sprint-mode dev session found no result:session-endcarries the last resultless verdict, theno-artifactcrumb names specs found one level down, andvalidatewarnsqueue.nested-specson a nested spec layout (#780)." #820's own #780 entry stays as it is.Summary by CodeRabbit