fix: CognitiveMemory sql.js Docker compatibility

- Add getSqlJsDatabase() to export raw sql.js database with exec() method
- Update index.ts to use getSqlJsDatabase() for memory systems
- Memory systems (Pattern, Failure, Cognitive) need direct exec() access

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/backend/src/database/index.ts

@@ -511,6 +511,14 @@ export function getDatabase(): Database {
   };
 }
 
+/**
+ * Get raw sql.js Database for memory systems that need direct exec() access
+ * This is needed for CognitiveMemory, PatternMemory, FailureMemory
+ */
+export function getSqlJsDatabase(): SqliteDatabase | null {
+  return sqliteDb;
+}
+
 export async function closeDatabase(): Promise<void> {
   if (sqliteDb) {
     sqliteDb.close();

apps/backend/src/index.ts

@@ -392,14 +392,20 @@ async function startServer() {
     const { getSourceRegistry } = await import('./mcp/SourceRegistry.js');
     const { initAutonomousAgent, startAutonomousLearning } = await import('./mcp/autonomousRouter.js');
     const { autonomousRouter } = await import('./mcp/autonomousRouter.js');
-    const { getDatabase } = await import('./database/index.js');
+    const { getSqlJsDatabase } = await import('./database/index.js');
     const { existsSync } = await import('fs');
     const { readFileSync } = await import('fs');
     const yaml = (await import('js-yaml')).default;
 
-    const db = getDatabase();
-    initCognitiveMemory(db);
-    console.log('🧠 Cognitive Memory initialized');
+    // Use raw sql.js database for memory systems (they need exec() method)
+    const sqlJsDb = getSqlJsDatabase();
+    if (sqlJsDb) {
+      initCognitiveMemory(sqlJsDb);
+      console.log('🧠 Cognitive Memory initialized');
+    } else {
+      console.warn('⚠️ Cognitive Memory running in degraded mode (no sql.js database)');
+      initCognitiveMemory();
+    }
 
     // Initialize Unified Memory System
     const { unifiedMemorySystem } = await import('./mcp/cognitive/UnifiedMemorySystem.js');