diff --git a/.serena/cache/typescript/document_symbols_cache_v20-05-25.pkl b/.serena/cache/typescript/document_symbols_cache_v20-05-25.pkl
index 3e4099f..93ce2e3 100644
Binary files a/.serena/cache/typescript/document_symbols_cache_v20-05-25.pkl and b/.serena/cache/typescript/document_symbols_cache_v20-05-25.pkl differ
diff --git a/libs/core/di/src/awilix-container.ts b/libs/core/di/src/awilix-container.ts
index ca1318b..168f00c 100644
--- a/libs/core/di/src/awilix-container.ts
+++ b/libs/core/di/src/awilix-container.ts
@@ -3,72 +3,21 @@
  * Creates a decoupled, reusable dependency injection container
  */
 
-import { Browser } from '@stock-bot/browser';
-import { type CacheProvider } from '@stock-bot/cache';
+import type { Browser } from '@stock-bot/browser';
+import type { CacheProvider } from '@stock-bot/cache';
 import type { AppConfig as StockBotAppConfig } from '@stock-bot/config';
 import type { IServiceContainer } from '@stock-bot/handlers';
-import { type Logger } from '@stock-bot/logger';
-import { MongoDBClient } from '@stock-bot/mongodb';
-import { PostgreSQLClient } from '@stock-bot/postgres';
-import { ProxyManager } from '@stock-bot/proxy';
-import { QuestDBClient } from '@stock-bot/questdb';
-import { type QueueManager } from '@stock-bot/queue';
+import type { Logger } from '@stock-bot/logger';
+import type { MongoDBClient } from '@stock-bot/mongodb';
+import type { PostgreSQLClient } from '@stock-bot/postgres';
+import type { ProxyManager } from '@stock-bot/proxy';
+import type { QuestDBClient } from '@stock-bot/questdb';
+import type { QueueManager } from '@stock-bot/queue';
 import { type AwilixContainer } from 'awilix';
-import { z } from 'zod';
+import type { AppConfig } from './config/schemas';
 
-// Configuration schema with validation
-const appConfigSchema = z.object({
-  redis: z.object({
-    enabled: z.boolean().optional(),
-    host: z.string(),
-    port: z.number(),
-    password: z.string().optional(),
-    username: z.string().optional(),
-    db: z.number().optional(),
-  }),
-  mongodb: z.object({
-    enabled: z.boolean().optional(),
-    uri: z.string(),
-    database: z.string(),
-  }),
-  postgres: z.object({
-    enabled: z.boolean().optional(),
-    host: z.string(),
-    port: z.number(),
-    database: z.string(),
-    user: z.string(),
-    password: z.string(),
-  }),
-  questdb: z
-    .object({
-      enabled: z.boolean().optional(),
-      host: z.string(),
-      httpPort: z.number().optional(),
-      pgPort: z.number().optional(),
-      influxPort: z.number().optional(),
-      database: z.string().optional(),
-    })
-    .optional(),
-  proxy: z
-    .object({
-      cachePrefix: z.string().optional(),
-      ttl: z.number().optional(),
-    })
-    .optional(),
-  browser: z
-    .object({
-      headless: z.boolean().optional(),
-      timeout: z.number().optional(),
-    })
-    .optional(),
-  queue: z
-    .object({
-      enabled: z.boolean().optional(),
-    })
-    .optional(),
-});
-
-export type AppConfig = z.infer<typeof appConfigSchema>;
+// Re-export for backward compatibility
+export type { AppConfig };
 
 /**
  * Service type definitions for type-safe resolution
diff --git a/libs/core/di/src/container/builder.ts b/libs/core/di/src/container/builder.ts
index c086f97..8376979 100644
--- a/libs/core/di/src/container/builder.ts
+++ b/libs/core/di/src/container/builder.ts
@@ -94,9 +94,16 @@ export class ServiceContainerBuilder {
         user: config.postgres?.user || '',
         password: config.postgres?.password || '',
       },
-      questdb: this.options.enableQuestDB ? config.questdb : undefined,
+      questdb: this.options.enableQuestDB ? (config.questdb || {
+        enabled: true,
+        host: 'localhost',
+        httpPort: 9000,
+        pgPort: 8812,
+        influxPort: 9009,
+        database: 'questdb',
+      }) : undefined,
       proxy: this.options.enableProxy ? (config.proxy || { cachePrefix: 'proxy:', ttl: 3600 }) : undefined,
-      browser: this.options.enableBrowser ? config.browser : undefined,
+      browser: this.options.enableBrowser ? (config.browser || { headless: true, timeout: 30000 }) : undefined,
       queue: this.options.enableQueue ? { enabled: this.options.enableQueue } : undefined,
     };
   }
diff --git a/libs/core/di/src/registrations/database.registration.ts b/libs/core/di/src/registrations/database.registration.ts
index 68386cd..5e900ab 100644
--- a/libs/core/di/src/registrations/database.registration.ts
+++ b/libs/core/di/src/registrations/database.registration.ts
@@ -14,7 +14,7 @@ export function registerDatabaseServices(
     container.register({
       mongoClient: asFunction(({ logger }) => {
         // Parse MongoDB URI to extract components
-        const uriMatch = config.mongodb.uri.match(/mongodb:\/\/(?:([^:]+):([^@]+)@)?([^:\/]+):(\d+)\/([^?]+)(?:\?authSource=(.+))?/);
+        const uriMatch = config.mongodb.uri.match(/mongodb:\/\/(?:([^:]+):([^@]+)@)?([^:/]+):(\d+)\/([^?]+)(?:\?authSource=(.+))?/);
         const mongoConfig = {
           host: uriMatch?.[3] || 'localhost',
           port: parseInt(uriMatch?.[4] || '27017'),