Hook never fired in production despite passing unit tests. Diagnosed
via debug-log + payload dump: real Claude Code PostToolUse:Agent sends
`tool_response` as an OBJECT (not string, not array), with the agent's
reply at `tool_response.content[0].text` — keys: agentId / agentType /
content / prompt / status / toolStats / totalDurationMs / totalTokens
/ totalToolUseCount / usage.
Original jq filter handled string + object (`$r.content // $r.text`)
but `$r.content` returns the array verbatim; `jq -r` then dumps the
JSON literal which has `\n` as escape sequences, defeating the
`grep -m1 '^shipped:'` line-anchor.
Fix: recursive `flatten` jq function:
string → as-is
array of any → recurse, join "\n"
object with .text → return .text
object with .content → recurse into content
anything else → ""
Verified end-to-end: latest 4 code-implementer spawns now write
outcome=functional to ledger correctly. Beta posterior in
kei-model-router begins receiving signal.
Production cleanup:
- Removed verbose debug-log + payload-dump diagnostic. Toggle via
`AGENT_OUTCOME_DEBUG=1` env if hook stops firing in some future
Claude Code version.
- Hook source committed to `hooks/agent-outcome-backfill.sh` so
`install.sh` deploys it on fresh installs (was only in user-home
previously — gap from `feat/substrate-path-atoms` agent run).
=== STATUS-TRUTH MARKER ===
shipped: functional
stubs: 0
cargo-check: NOT-RUN
behaviour-verified: yes
follow-up-required:
- none
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
