job2: capitalize execution — LRN-104 (oracle contract + no-runner) + journal

.claude/memory/journal.md

@@ -338,3 +338,4 @@ rules:
 - job2 config-smell audit shipped read-only: `.audit/job2-report.md` — surface skills/agents/hooks/plugins/settings(.local), 17 findings (3 RISK perms, 6 DRIFT, 2 BLOAT, 3 OVERLAP, 2 DEAD, 1 struct), 26 diffs base c6d5e03, 0 decision-conflicts, all fresh-context verified [[EVAL-017]]. Live catch: design hook fired on audit's own task-notifications (14/20 recent fires).
 - Brief premise corrected: Edit/Bash(hooks/*.sh) permission rule NEVER existed — was config-protection case arm (:37) + job1 sentinel bypasses. Phase-0 UNREFERENCED metrics 100% broken (grep -q kills -l).
 - User GO full execution incl. 3 RISK: cp/mv→ask, find -exec deny mirror, settings.local prune (python3 -, rtk git *). F9 fable default committed (user re-chose via /model), F16 gitflow-migrate.sh removed (git-recoverable), F8/find-docs skip (generator-owned). Executor = Sonnet subagent on chore/job2-fixes, NO finish.
+- job2 EXECUTED: 15 commits chore/job2-fixes, all diffs first-try, `make test` wired + first-ever full run ALL GREEN (gitflow 71/0). Measured −309 tok/session (agents 4840→3609 chars); design hook no longer fires on task-notifications. Executor STOP exercised for real: F4 gate red → root-caused to job1 oracle regression (3f639b3), fixed as [[LRN-104]]; 2nd YAML error/file unmasked (onboard/plugin-check) → closed 6a3b197. Skips: F8 (npx skills has no re-pin verb), find-docs (ctx7). Open: F8 route, find-docs/ctx7 (couple job1-F10), merged on user GO.

.claude/memory/learnings.md

@@ -1058,3 +1058,11 @@ rules:
 - **context**: 2026-07-06, job1 audit follow-up (.audit/job1-report.md, finding F13). BLK-009 closed same session; workaround it forced ([[BDR-031]] unconditional + compressed global CLAUDE.md) no longer required by this bug specifically, though BDR-031 itself stands on its own merits pending separate review.
 - **future application**: before acting on ANY open upstream/tool blocker cited to justify a fix, a caveat, or a design constraint — re-probe it live if cheap, don't just trust the registry's last-recorded status.
 - **cousin**: [[BLK-009]] closed this session; [[BDR-031]] (the workaround this bug forced).
+
+## LRN-104 — a hook's output message is part of its test contract; no runner = regression invisible
+
+- **pattern**: job1 F14 (`3f639b3`) changed design-hook stdout to pointer-only; test oracle grepped old literal `design-toolchain` → 9 fire-checks silently red 3 days. Hook itself fine — broken oracle, not broken behavior. Caught ONLY when job2 executor ran the suite as its F4 gate; zero runner existed before (job2 F10). Fix: oracle synced to durable fragment `full toolchain` (heading BDR-021 requires the hook to quote verbatim) + `make test` target wired.
+- **why**: an untested output string IS an interface — its test must anchor on the durable contract part (the mandated heading), not incidental wording. No automated runner → oracle drift accumulates unseen; "18 checks lock it" ([[LRN-091]]) protected nothing while nothing ran them.
+- **2nd facet**: audit yaml.safe_load stops at FIRST error/file — fixing error #1 unmasked pre-existing error #2 (onboard/plugin-check argument-hint). Verify errors-per-file exhaustively, not error-presence.
+- **future application**: change any hook/script output consumed by a test → run its test same commit. `make test` now the deterministic backstop (job2 F10). Audit parse-checks: iterate until file fully clean, count errors not booleans.
+- **cousin**: [[LRN-091]] (the lock that never ran), [[LRN-096]] (a guard is code, prove it can fail), [[EVAL-017]].