chore(memory): LRN-097 blog-pattern-vs-real-feature + journal 2026-07-04

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XpphkdTosUzokBDNG7PToS

.claude/memory/journal.md

@@ -320,3 +320,8 @@ rules:
 - Integration: feature/verify-loops = develop + merge lots 1-3 (local, develop/main intact, nothing pushed) so lots 4-5 wiring is dogfoodable against present agents. Memory stack-conflicts resolved (BDR-048/049, LRN-092/093/094 stacked ID-order; BDR-048 addendum applied; LRN-090/091 index rows backfilled).
 - Chantier verify-loops LOT 4 (feature/verify-loops `0f0162d`): lib/verify-secure-loop.md shared include + wired feater (0.7 contract, 3 verify+secure), bugfixer (3.5 contract from diagnosis, 5 gates), hotfixer (1.7 silent contract, 3 security gate FAILURE=REVERT not loop, +Agent tool). 27 structure locks + full pipeline dogfood: feat fixture w/ SQLi → GATE1 CONFORME → GATE2 BLOCK(1) (checklist caught what semgrep taint missed) → fix → re-verify CONFORME (order invariant) → re-scan PASS. [[BDR-050]] [[LRN-095]]. Weighting held: feat/bugfix nominal 2 dispatches, hotfix 1 + revert-on-fail. INCIDENT: re-committed [[LRN-093]] (2nd recurrence, 4 locks w/ \n) — caught at first run; user flagged advisory-insufficient → build deterministic backstop in lot 5. Next: lot 5 heavy flows (ship-feature enrich-at-gate, init-project +security, onboard no-loop) + escalation dogfood (max-3 STOP) + LRN-093 meta-test guard.
 - Chantier verify-loops LOT 5 (feature/verify-loops `1c69de2`, FINAL): ship-feature (0e contract, enrich-at-gate STEP 3 [gated], 5 verify+secure vs ENRICHED) + init-project (contract from BRIEF, enrich GATE#1, 9 verify+secure — adds the security gate it lacked) + onboard (explicit NO-loop, audit≠dev, documented vs symmetry) + lib/tests/no-vacuous-locks.test.sh (LRN-093 deterministic backstop w/ inline flip-test) + loops-heavy 18 locks. Dogfood BOTH vigilance points real: (1) enrich — fresh verifier reads+judges a [gated] design criterion (ECARTS names it); (2) escalation — 3 consecutive ECARTS → orchestrator STOP at max-3 + CONTRACT-vs-REALIZED table, no 4th loop, no commit (first real exercise of the infinite-loop guard). [[BDR-051]] [[LRN-096]]. INCIDENT closed: the backstop's OWN flip-test RED'd (regex missed line-start tf) → fixed → [[LRN-096]] (a guard is code, prove it can fail). Chantier complete: 5 lots on feature/verify-loops, develop+main intact, nothing pushed.
+
+## 2026-07-04
+
+- Merged verify-loops chantier + default-model chore into develop (user pushed). Cut release/4.1.0 (prep + RC gate 8/8 green) — awaiting GO.
+- rules/ dir built + symlinked via link.sh (feature/rules-dir `06391a6`): real feature verified (paths-scoped lazy rules); context7.md machine-owned → gitignored (find-docs pattern). "contexts dir" request REFUSED — feature doesn't exist (official docs via claude-code-guide); intent already covered by agents/skills. [[LRN-097]].

.claude/memory/learnings.md

@@ -116,6 +116,7 @@ rules:
 | LRN-094 | 2026-07-03 | SAST severity ≠ exploitability — semgrep ERROR conflates real vulns + hardening recos; metadata does NOT cleanly separate them (measured) → metadata refinement = noisy gate; ERROR-threshold + diff-scoping is the containment | mapping a SAST tool's output to a blocking gate |
 | LRN-095 | 2026-07-03 | orthogonal gates don't contaminate — a conformity verifier must PASS correct-but-insecure code (security is a separate gate's job); proven live (CONFORME on a feature carrying a SQLi); fusing the two degrades each | designing multi-dimension review/verify/audit gates |
 | LRN-096 | 2026-07-04 | a backstop/guard is code — reliable ONLY after a flip-test proves it CAN fail; an unproven guard replacing an advisory = a vacuous guard (LRN-048 applied to guards); flip-test mandatory at guard creation | building any deterministic guard/lint/backstop |
+| LRN-097 | 2026-07-04 | community blog pattern ≠ official feature — "contexts dir" doesn't exist in Claude Code; verify feature against official docs (claude-code-guide) BEFORE building infra; the intent was already covered by real mechanisms (agents/skills/rules) | any "add support for X" request naming a Claude Code feature |
 
 ---
 
@@ -1015,3 +1016,10 @@ rules:
 - **context**: lot 5 `lib/tests/no-vacuous-locks.test.sh` 2026-07-04. Built the guard, its flip-test RED'd (regex too weak, missed line-start `tf`), fixed the regex, flip-test green. The guard now ships WITH the flip-test inline so it self-proves on every run.
 - **future application**: building any guard/lint/census/backstop — bundle a flip-test (a synthetic offender the guard must catch) in the same file; a guard whose failure path was never exercised is untrusted. Corroborates [[LRN-047]]/[[LRN-091]] (advisory→deterministic) — this is the *quality bar* on the deterministic replacement.
 - **cousin**: [[LRN-048]] prove it looked; [[LRN-093]] the class this guards; [[LRN-046]] deterministic-oracle discipline.
+
+## LRN-097 — Community blog pattern ≠ official feature: verify against docs before building infra
+- **pattern**: user requested a `~/.claude/contexts/` dir + symlink, with 3 example "context mode" files (review/research/dev) from a community pattern. Official docs check (claude-code-guide agent): NO contexts feature exists in Claude Code — no loader, no `/context <name>`, nothing reads that dir. Building it = dead infra. The underlying intent (modal postures) was ALREADY covered by real mechanisms: review → verifier/security-auditor/review skills; research → analyzer/Explore; dev norms → CLAUDE.md always-on. One proposed "context" even CONTRADICTED standing doctrine ("get it working first" vs "root causes only").
+- **why it matters**: plausible-looking blog patterns import silently as "features"; the cost is not just dead files — norms moved into a nonexistent loader silently STOP applying. Gate: any request naming a Claude Code capability → verify against official docs BEFORE writing files; then map the intent onto the real mechanism.
+- **context**: 2026-07-04 rules-dir chantier. `rules/` (real feature, verified: paths-scoped lazy loading) was built; `contexts/` (nonexistent) was refused with the doc citation.
+- **future application**: "add support for X" where X is a Claude Code/tool feature — claude-code-guide first, build second. Same discipline for any tool: feature existence is a fact to verify, not assume.
+- **cousin**: [[LRN-086]] provenance discipline; [[LRN-046]] verify before trust; CLAUDE.md "Never assume — verify".