Add bootstrap v2, preflight readiness and migration tooling

scripts/migrate-health-db.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+DB_FILE="/opt/appfactory/data/appfactory/appfactory.db"
+
+python3 - "$DB_FILE" <<'PY'
+import sqlite3
+import sys
+
+db = sqlite3.connect(sys.argv[1])
+
+db.execute("""
+CREATE TABLE IF NOT EXISTS service_health (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    service_id TEXT NOT NULL,
+    status TEXT NOT NULL,
+    http_status INTEGER,
+    response_time_ms INTEGER,
+    error_text TEXT,
+    checked_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+)
+""")
+
+db.execute("""
+CREATE INDEX IF NOT EXISTS idx_service_health_service
+ON service_health(service_id, checked_at DESC)
+""")
+
+db.commit()
+db.close()
+
+print("Health migration completed")
+PY