diff --git a/.jules/bolt.md b/.jules/bolt.md
index 92ad5715b76..e9b6abcf006 100644
--- a/.jules/bolt.md
+++ b/.jules/bolt.md
@@ -42,3 +42,7 @@
 ## 2026-06-21 - [Avoid Unnecessary Redis pings]
 **Learning:** Repeatedly calling `redis_client.ping()` as a precondition check before actually executing redis commands creates an unnecessary N+1 round-trip performance bottleneck. If a command fails due to connection issues, the underlying library will raise an exception (like `redis.exceptions.ConnectionError`) regardless.
 **Action:** Avoid explicit `ping()` calls for connection validation before issuing commands. Rely on exception handling blocks around the actual commands.
+
+## 2026-03-31 - [Promise-based Repository Initialization Guard]
+**Learning:** Calling schema setup functions like `ensureTable` (containing `CREATE TABLE/INDEX IF NOT EXISTS`) on every database operation creates a redundant round-trip bottleneck. Using a promise-based singleton guard ensures this logic runs only once per application lifecycle while safely handling concurrent calls.
+**Action:** Always implement a module-level `initializationPromise` to guard repository schema setup logic.
diff --git a/server/src/db/repositories/uat.ts b/server/src/db/repositories/uat.ts
index 6e81fd318cf..c58156e5ead 100644
--- a/server/src/db/repositories/uat.ts
+++ b/server/src/db/repositories/uat.ts
@@ -3,6 +3,11 @@ import baseLogger from '../../config/logger.js';
 
 const logger = baseLogger.child({ name: 'uat-repo' });
 
+// BOLT OPTIMIZATION: Guard initialization to prevent redundant schema checks on every operation.
+// This reduces database round-trips for high-frequency UAT event logging.
+// Pattern also used in high-throughput tickets repository.
+let initializationPromise: Promise<void> | null = null;
+
 export type UATCheckpoint = {
   run_id: string;
   checkpoint: string;
@@ -13,26 +18,33 @@ export type UATCheckpoint = {
 };
 
 async function ensureTable() {
-  const pool = getPostgresPool();
-  try {
-    await pool.query(`
-      CREATE TABLE IF NOT EXISTS maestro_uat_checkpoints (
-        id SERIAL PRIMARY KEY,
-        run_id TEXT NOT NULL,
-        checkpoint TEXT NOT NULL,
-        verdict TEXT NOT NULL,
-        evidence_uris JSONB,
-        actor TEXT,
-        created_at TIMESTAMPTZ DEFAULT NOW()
+  if (initializationPromise) return initializationPromise;
+
+  initializationPromise = (async () => {
+    const pool = getPostgresPool();
+    try {
+      await pool.query(`
+        CREATE TABLE IF NOT EXISTS maestro_uat_checkpoints (
+          id SERIAL PRIMARY KEY,
+          run_id TEXT NOT NULL,
+          checkpoint TEXT NOT NULL,
+          verdict TEXT NOT NULL,
+          evidence_uris JSONB,
+          actor TEXT,
+          created_at TIMESTAMPTZ DEFAULT NOW()
+        );
+        CREATE INDEX IF NOT EXISTS idx_uat_run ON maestro_uat_checkpoints(run_id);
+      `);
+    } catch (e: any) {
+      logger.warn(
+        { err: e },
+        'ensureTable maestro_uat_checkpoints failed (mock mode?)',
       );
-      CREATE INDEX IF NOT EXISTS idx_uat_run ON maestro_uat_checkpoints(run_id);
-    console.log(`);
-  } catch (e: any) {
-    logger.warn(
-      { err: e },
-      'ensureTable maestro_uat_checkpoints failed (mock mode?)',
-    );
-  }
+      initializationPromise = null;
+    }
+  })();
+
+  return initializationPromise;
 }
 
 export async function addUATCheckpoint(c: UATCheckpoint) {