chore(6a2): update machine-readable governance to Squad Audit v1 state

STATE: phase/done/next/blockers, completion 30%; ECOSYSTEM: VerisimDB +
proven-epistemic relationships, upstream-of-listings position; META:
authoritative-spec decision record; PLAYBOOK: phantom recipes replaced with
real commands, [testing] section added.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.machine_readable/6a2/ECOSYSTEM.a2ml

@@ -1,10 +1,20 @@
 # SPDX-License-Identifier: MPL-2.0
 # ECOSYSTEM.a2ml — Ecosystem position
 # Converted from ECOSYSTEM.scm on 2026-03-15
+# Updated 2026-06-11: Squad Audit v1 (see docs/design/squad-audit-v1.adoc)
 
 [metadata]
 project = "flat-mate"
 ecosystem = "hyperpolymath"
 
 [position]
 type = "component"
+market-position = "upstream of listings markets (SpareRoom etc.) — outputs a vetted household + search brief; hosts NO listings, is NOT a SpareRoom competitor"
+
+[relationships]
+consumes = "VerisimDB (estate database — sole persistence)"
+mirrors = "proven-servers/protocols/proven-epistemic — formally verified Idris2 conceal-lattice reference for the disclosure tiers in packages/shared/src/matching/conceal.js (ADR: proven-servers/docs/decisions/0002-add-proven-epistemic-disclosure-core.md)"
+
+[documents]
+# Sibling spec docs live in docs/design/
+authoritative-spec = "docs/design/squad-audit-v1.adoc"

.machine_readable/6a2/META.a2ml

@@ -1,9 +1,19 @@
 # SPDX-License-Identifier: MPL-2.0
 # META.a2ml — Project meta-information
 # Converted from META.scm on 2026-03-15
+# Updated 2026-06-11: Squad Audit v1 (see docs/design/squad-audit-v1.adoc)
 
 [metadata]
 project = "flat-mate"
 author = "Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>"
 license = "MPL-2.0"
 standard = "RSR 2026"
+
+[architecture-decisions]
+# Decided 2026-06-11 (five-lens survey; see the design record for rationale)
+authoritative-spec = "docs/design/squad-audit-v1.adoc"
+# Where code and the spec disagree, the spec wins until amended.
+spec-precedence = "spec wins over code"
+layers = "harmony engine / feasibility engine / market mechanisms"
+field-governance = "epistemic: every stored field carries {purpose, revealingness, minTier} enforced at read time; no UK GDPR Art. 9 (special-category) fields by schema construction"
+# Never promise a "stable matching" — typically nonexistent (Chin-Michelen 2026); banded verdicts only.

.machine_readable/6a2/PLAYBOOK.a2ml

@@ -3,21 +3,29 @@
 #
 # PLAYBOOK.a2ml — Operational playbook
 # Runbooks, incident response, deployment procedures.
+# Updated 2026-06-11: Squad Audit v1 (see docs/design/squad-audit-v1.adoc)
 
 [metadata]
 version = "0.1.0"
-last-updated = "2026-03-16"
+last-updated = "2026-06-11"
 
 [deployment]
 # method = "gitops"
 # target = "container"
 
+[testing]
+# Engine v2 tests (35 tests): deno test --allow-read packages/shared/src/matching/
+#   (alias: deno task test)
+# Static checks (type-check + lint): deno task check
+# Format check: deno task fmt:check
+# Note: apps/ (api, web, mobile) have NO tests and are NOT wired to engine v2 (legacy v0).
+
 [incident-response]
-# 1. Check .machine_readable/STATE.a2ml for current status
+# 1. Check .machine_readable/6a2/STATE.a2ml for current status
 # 2. Review recent commits and CI results
-# 3. Run just validate to check compliance
+# 3. Run just doctor to check the environment, then deno task check
 
 [release-process]
-# 1. Update version in STATE.a2ml, META.a2ml
-# 2. Run just quality (format, lint, test)
+# 1. Update version in deno.json and .machine_readable/6a2/STATE.a2ml
+# 2. Run deno task fmt:check && deno task check && deno task test
 # 3. Tag and push

.machine_readable/6a2/STATE.a2ml

@@ -1,14 +1,33 @@
 # SPDX-License-Identifier: MPL-2.0
 # STATE.a2ml — Project state checkpoint
 # Converted from STATE.scm on 2026-03-15
+# Updated 2026-06-11: Squad Audit v1 (see docs/design/squad-audit-v1.adoc)
 
 [metadata]
 project = "flat-mate"
 version = "0.1.0"
-last-updated = "2026-03-15"
+last-updated = "2026-06-11"
 status = "active"
 
 [project-context]
 name = "flat-mate"
-completion-percentage = 0
-phase = "In development"
+completion-percentage = 30
+phase = "Squad Audit v1 — engine layer landed, product unwired"
+focus = "Wire apps (api/web/mobile) to engine v2 at packages/shared/src/matching/"
+target = "Jan-May 2027 London second-year wave"
+
+[done]
+# 2026-06-11: Design decision record landed — docs/design/squad-audit-v1.adoc (authoritative spec)
+# 2026-06-11: Engine v2 landed at packages/shared/src/matching/ — 10 modules + 5 test files,
+#   35 tests green, lint/fmt clean (behaviour/tolerance directional scoring, feasibility/harmony
+#   split scores, banded verdicts, auditGroup, conceal lattice T0/T1/T2 with effectiveTier = min,
+#   agreement + brief artifact generators, deterministic seeds incl. broken "Bloomsbury Three" fixture)
+
+[next]
+# - Wire apps/api, apps/web, apps/mobile to engine v2 (apps are legacy v0, NOT wired, and have NO tests)
+# - Legacy v0 (swipe+listings over VerisimDB) quarantine/removal decision pending (owner)
+
+[blockers]
+# - Privacy notice, retention schedule, and a verified VerisimDB erasure + subject-access-export
+#   story are required before launch (per docs/design/squad-audit-v1.adoc, epistemic field governance)
+# - Legacy v0 quarantine decision pending