feat(ctx7): coverage extension — fast-libs single source + reminder hook + executor briefs (BDR-078)

- lib/fast-libs.sh: detect/cache-status verbs, JS+Python manifests,
  7-day cache freshness, LC_ALL=C sort — replaces 3 hardcoded lists
  (ship-feature 0c, init-project 5c, onboard 3.5)
- hooks/ctx7-reminder.sh: once-per-session UserPromptSubmit nudge when
  the project carries fast-libs and .ctx7-cache/ is missing/stale
- find-docs: before-writing-code trigger + cache-first rule; dist is
  machine-owned (gitignored) so the durable patch lives in
  install-plugins.sh STEP ctx7 (idempotent, grep-guarded)
- feater/bugfixer briefs: fast-lib docs rule (fresh cache read, else
  2-topic ctx7 fetch, else NOTES cache miss + proceed)
- tests: lib/tests/fast-libs.test.sh (11 checks); shellcheck + full
  make test green (review-guards 5/0)

.claude/memory/journal.md

@@ -413,3 +413,6 @@ rules:
 ## 2026-07-19
 - BDR-076: dispatched judgment agents pinned opus (analyzer, plan-challenger, seo/geo/validator-analyzer + 6 onboard general-purpose dispatches); Fable now = inline orchestration/reflection only. interviewer + client-handover-writer left unpinned (inline-load, pin inert). Local opus-4-8 session pin dropped from settings.local.json. Census §11 added (61 pass), loops-light 35, make test green. feature/opus-pin-audit-agents, UNMERGED.
 - BDR-077 model-tiering v2 SHIPPED: 6 waves (W0 baseline merge → W1 no-inherit+fable skill-runners → W2 plugin split + doc two-mode + inert-pin conversions → W3 tier moves → W4 handover two-mode → W5 seo/geo 3-mode pipelines → W6 doctrine sweep). Plan challenged 4 passes (1 BLOCKER closed by fable spike). Per-wave planted-input smokes disk-verified. Census 125/0, make test green throughout. [[BDR-077]] [[LRN-137]].
+
+## 2026-07-20
+- ctx7 coverage audit (user ask "ctx7 appelé à chaque techno ?") → verdict PARTIAL. 4 gaps: find-docs question-only, /feat //bugfix executors blind, ad-hoc coding uncovered, fast-libs hardcoded 3×. All 4 closed → BDR-078 (fast-libs.sh single source + ctx7-reminder hook + description trigger + executor-brief rule). fast-libs test 11/0, make test + review-guards green. feature/ctx7-coverage, UNMERGED.