feat: add runner conversion scripts and strengthen cutover automation

runners-conversion/periodVault/init-audit.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+# init-audit.sh
+# Initializes local audit scaffolding used by process gates.
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+AUDIT_DIR="$PROJECT_ROOT/audit"
+
+mkdir -p "$AUDIT_DIR"
+
+if [[ ! -f "$AUDIT_DIR/requirements.json" ]]; then
+  cat >"$AUDIT_DIR/requirements.json" <<'JSON'
+{
+  "version": 1,
+  "lastUpdated": "2026-02-21",
+  "requirements": [
+    {
+      "id": "R-CI-SELF-HOSTED",
+      "description": "CI jobs run on self-hosted runner labels with documented fallback."
+    },
+    {
+      "id": "R-DEV-SETUP",
+      "description": "Repository provides idempotent bootstrap script and verification commands."
+    },
+    {
+      "id": "R-DEV-GUIDE",
+      "description": "Developer guide is aligned with README, scripts, and local workflow."
+    }
+  ]
+}
+JSON
+  echo "[init-audit] Created audit/requirements.json"
+else
+  echo "[init-audit] Found audit/requirements.json"
+fi
+
+if [[ ! -f "$AUDIT_DIR/test-runs.json" ]]; then
+  cat >"$AUDIT_DIR/test-runs.json" <<'JSON'
+{
+  "version": 1,
+  "runs": []
+}
+JSON
+  echo "[init-audit] Created audit/test-runs.json"
+else
+  echo "[init-audit] Found audit/test-runs.json"
+fi
+
+if [[ ! -f "$PROJECT_ROOT/CODEX-REPORT.md" ]]; then
+  cat >"$PROJECT_ROOT/CODEX-REPORT.md" <<'MD'
+# CODEX Report
+
+## Requirements Mapping
+- R-CI-SELF-HOSTED: pending
+- R-DEV-SETUP: pending
+- R-DEV-GUIDE: pending
+
+## Constitution Compliance Matrix
+| Principle | Status | Notes |
+|-----------|--------|-------|
+| I | pending | |
+| X | pending | |
+| XX | pending | |
+
+## Evidence
+- Add command outputs and CI links.
+
+## Risks
+- Add known risks and mitigations.
+MD
+  echo "[init-audit] Created CODEX-REPORT.md template"
+else
+  echo "[init-audit] Found CODEX-REPORT.md"
+fi
+
+echo "[init-audit] Audit scaffolding ready."