findings: F31-F40 Cobrust v0.3.0 empirical corroboration batch#1
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10 failure-mode findings from Cobrust Phase F.3 → Phase I (2026-05-16 to
2026-05-19). Each entry includes Cobrust commit SHAs as ground-truth anchors
and satisfies the second-corroborator requirement.
Slot mapping note: upstream F27-F30 are already in use (persona-testing
and doc-authority sub-forms). Cobrust's local F27-F34 + F35 + F35-sibling
+ P7-stream-watchdog-false-stall map to upstream F31-F40.
Finding summaries:
- F31: ADR batch frame over-scopes without pre-dispatch source verification
- F32: PAIR ceremony unimplementable on single-layer agent platforms (Claude Code)
- F33: Predicate-flip F29 enumeration misses latent consumers (26% miss rate)
- F34: Bidirectional Ref(T)↔T unify produces 142-failure AmbiguousType cascade
- F35: Third corroboration — ADR forward-looking claim ≠ current source state
- F36: Agent skips self-disciplinary rules on first application ("low-risk" rationalization)
- F37: file:NNN anchors drift >100 lines in 14 days on high-churn compiler files
- F38: TEST corpus exit-0 claim invalid on post-merge crate-graph at DEV dispatch time
- F39: DEV commit message preserves original-spec scope after mid-sprint reduction
- F40: 600s stream-watchdog stall signal is false-positive; agent completes post-hoc
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
plugins/adsd/skills/agent-driven-development/reference/cobrust-f31-f39/with a README SHA indexFindings
891d235,30cf2b2,1998dbe,909811faca5d87Ref(T)↔Tunify produces 142-failure AmbiguousType cascade in legacy code23cadf6(trigger),bcf9c7d(fix),6843a33(0 regressions)1643776929cd4ahonesty addendumfile:NNNanchors drift >100 lines in 14 days on high-churn compiler files (24 stale anchors in 2 ADRs)ab88ae5a4ec1ab490Tier-2 sweep0f42be2,2e7ccb2,84e1286,0cfeb3fc89d540(drifted),49ec536(Tier-1 catch)8e28b7fthrough2ae8c52; merge663cd56Test plan
## Catalogue maintenanceinstructionsgithub.com/Cobrust-lang/Cobrustmain branch.mdfiles) — no Rust impl — matchesdocs/findingsprefix ✓🤖 Generated with Claude Code