feat: cleanup code and wrap it up

Author: KONFeature

agent/package.json

@@ -21,6 +21,7 @@
         "@elizaos/adapter-postgres": "workspace:*",
         "@elizaos/adapter-redis": "workspace:*",
         "@elizaos/adapter-sqlite": "workspace:*",
+        "@elizaos/adapter-pglite": "workspace:*",
         "@elizaos/client-auto": "workspace:*",
         "@elizaos/client-direct": "workspace:*",
         "@elizaos/client-discord": "workspace:*",
@@ -72,4 +73,4 @@
         "ts-node": "10.9.2",
         "tsup": "8.3.5"
     }
-}
+}

agent/src/index.ts

@@ -1,5 +1,6 @@
 import { PostgresDatabaseAdapter } from "@elizaos/adapter-postgres";
 import { SqliteDatabaseAdapter } from "@elizaos/adapter-sqlite";
+import { PGLiteDatabaseAdapter } from "@elizaos/adapter-pglite";
 import { AutoClientInterface } from "@elizaos/client-auto";
 import { DiscordClientInterface } from "@elizaos/client-discord";
 import { FarcasterAgentClient } from "@elizaos/client-farcaster";
@@ -375,6 +376,12 @@ function initializeDatabase(dataDir: string) {
                 elizaLogger.error("Failed to connect to PostgreSQL:", error);
             });
 
+        return db;
+    } else if (process.env.PGLITE_DATA_DIR) {
+        elizaLogger.info("Initializing PgLite adapter...");
+        const db = new PGLiteDatabaseAdapter({
+            dataDir: process.env.PGLITE_DATA_DIR,
+        });
         return db;
     } else {
         const filePath =