Merge branch 'feature/contract-verifier' into feature/verify-loops

# Conflicts:
#	.claude/memory/decisions.md
#	.claude/memory/journal.md
#	.claude/memory/learnings.md

.claude/memory/decisions.md

@@ -70,6 +70,7 @@ rules:
 | BDR-046 | 2026-07-01 | Claude Code installs via official native installer (curl claude.ai/install.sh), drop npm from install.sh | accepted |
 | BDR-047 | 2026-07-01 | ECC audit → zero import; local config ahead of reference | accepted |
 | BDR-048 | 2026-07-03 | semgrep security gate: engine version + rulesets PINNED, never --config auto; upgrade = deliberate visible human jump | accepted |
+| BDR-049 | 2026-07-03 | verifier = fresh + blind (no iteration history) + disk-contract + PROOF-or-fail; mute ≠ PASS; scope enrichment via human micro-gate | accepted |
 
 ---
 
@@ -797,3 +798,12 @@ rules:
 - **Rationale**: gate blocks HIGH/CRITICAL only ([[LRN-047]]); silent engine/rule upgrade = new BLOCKs on unchanged code w/o human decision → gate crying false → ignored. Version jump must be deliberate + visible (bump pin, then `make update` shows the jump).
 - **Alternatives rejected**: `latest` (pipx house default, graphifyy-style) — fine for comfort tools, wrong for a blocking gate; `--config auto` — telemetry + non-determinism.
 - **Reference**: plugins.lock.json `semgrep` entry, install-plugins.sh STEP 7.5, update-all.sh step 6.2 — branch feature/semgrep-install `ccfecc9`. Conditions [[LRN-047]], [[LRN-085]]. Coverage caveat of the community rulesets: [[LRN-092]].
+- **Addendum 2026-07-03** (lot 3, measured): rulesets = `p/security-audit` + `p/secrets` + **`p/owasp-top-ten`**. owasp-top-ten is REQUIRED not optional — measured on realistic Flask code, the 2-ruleset baseline missed SQL injection + path traversal ENTIRELY (0 findings); owasp's taint rules catch them. Severity map: secrets ERROR→CRITICAL, other ERROR→HIGH (block), WARNING/INFO→reported. Blocking threshold = ERROR (per-RULE, not per-vuln — same class can straddle ERROR/WARNING; blocking WARNING too floods FP). FP measured shell/md only (faunosteo, game: sole added blocking ERROR = Dockerfile `missing-user` hygiene, contained by gate-mode diff-scoping). **Re-evaluate owasp FP at the first real web/python app project** (shell/md repos don't represent where the gate runs). See [[LRN-094]], agents/security-auditor.md branch feature/security-auditor `2b297bd`.
+
+## BDR-049 — Verifier doctrine: fresh + blind + disk-contract + proof-or-fail
+
+- **Date**: 2026-07-03
+- **Decision**: conformity verdict comes ONLY from a FRESH verifier subagent per iteration. Input = contract PATH (read from disk — dev restatement structurally unable to interpose) + diff range + optional test cmd. NEVER iteration history: blind, complete verification every time (cost bounded by the main-loop max-3 cap, [[LRN-083]]: loops decided in main loop). CONFORME ⇔ all criteria MET + zero out-of-scope. PROOF line mandatory ([[LRN-048]]). Mute/unparsable verifier NEVER a PASS: 1 fresh retry, 2nd structural failure = human escalation. Dev-justified out-of-scope enters FILE SCOPE only via a human micro-gate (`[gated]` marker) — else the dev justifies everything and scope constrains nothing. Contract on DISK at creation (`.claude/tasks/contracts/<date>-<slug>-<HHMM>.md`, committed; aborted run → deleted or `status: aborted`, never left dirty).
+- **Rationale**: dev self-score is always confident → not a gate. Verifier fed history anchors on prior verdicts → telescopic drift. Context-only contract dies at compaction, the verbatim with it.
+- **Alternatives rejected**: dev self-assessment as gate; cumulative verifier context ("cheaper" but anchored); gitignored run files (lose escalation reference + session-death survival).
+- **Reference**: lib/contract-interview.md + agents/verifier.md + lib/tests/contract-verifier.test.sh (31 locks) — branch feature/contract-verifier `6aed5ee`. Behavioral GREEN: planted-gap → ECARTS(2) exact; conform-under-injected-history → CONFORME (blindness held). Twin of [[BDR-048]] (security gate). Conditions [[LRN-048]], [[LRN-083]].