fix(settings, yjs, ux, ci): default settings, y-leveldb restart resilience, dashboard one-click open, delete error handling, Playwright CI

backend/src/websocket/yjsServer.ts

@@ -28,25 +28,54 @@ let persistence: LeveldbPersistence | null = null;
 let persistenceReady: Promise<void> | null = null;
 
 export async function initYjsPersistence(): Promise<void> {
-  try {
-    persistence = new LeveldbPersistence(PERSISTENCE_DIR);
-    // Set persistenceReady so getOrCreateDoc can await it
-    persistenceReady = (async () => {
-      // Wait for LevelDB to be ready
-      await (persistence as any).getAllDocNames();
-    })();
-    await persistenceReady;
-    console.log(`Yjs persistence initialized at ${PERSISTENCE_DIR}`);
-  } catch (err) {
-    console.warn('Yjs persistence failed to init (non-fatal):', err);
-  }
+  const tryInit = async (allowReset: boolean): Promise<void> => {
+    try {
+      persistence = new LeveldbPersistence(PERSISTENCE_DIR);
+      persistenceReady = (async () => {
+        // Wait for LevelDB to be ready
+        await (persistence as any).getAllDocNames();
+      })();
+      await persistenceReady;
+      console.log(`Yjs persistence initialized at ${PERSISTENCE_DIR}`);
+    } catch (err) {
+      // In dev mode the persistence dir lives under /tmp. If the previous process
+      // did not shut down cleanly, LevelDB can be left in a locked/corrupted state.
+      // Resetting the directory is acceptable because collaboration history is ephemeral.
+      if (allowReset && PERSISTENCE_DIR.startsWith('/tmp/')) {
+        console.warn(`Yjs persistence init failed, resetting ${PERSISTENCE_DIR} and retrying...`);
+        try {
+          if (persistence) {
+            await persistence.destroy().catch(() => {});
+            persistence = null;
+            persistenceReady = null;
+          }
+          const fs = await import('fs');
+          fs.rmSync(PERSISTENCE_DIR, { recursive: true, force: true });
+          fs.mkdirSync(PERSISTENCE_DIR, { recursive: true });
+        } catch (cleanupErr) {
+          console.warn('Yjs persistence cleanup failed:', cleanupErr);
+        }
+        return tryInit(false);
+      }
+      console.warn('Yjs persistence failed to init (running without disk persistence):', err);
+      persistence = null;
+      persistenceReady = null;
+    }
+  };
+
+  await tryInit(true);
 }
 
 export async function closeYjsPersistence(): Promise<void> {
   if (persistence) {
-    await persistence.destroy();
+    try {
+      await persistence.destroy();
+    } catch (err) {
+      console.warn('Yjs persistence close failed (non-fatal):', err);
+    }
     persistence = null;
   }
+  persistenceReady = null;
 }
 
 async function getOrCreateDoc(docName: string): Promise<Y.Doc> {