major overlay system architecture and performance improvements

- Move to service-based architecture with dedicated services directory
- Completely redesign overlay calculation, tracking, and rendering system
- Significantly optimize overlay performance and responsiveness
- Extract element-pointer logic into dedicated service
- Add new overlay-service with improved positioning algorithms
- Add style-service with optimized CSS injection and management
- Move element-sender-service to services directory for consistency
- Remove legacy overlay-manager and styles implementation
- Update all integrations to use new service architecture

Author: elieteyssedou

packages/chrome-extension/src/background.ts

@@ -1,6 +1,6 @@
 import { ConnectionStatus } from '@mcp-pointer/shared';
 import logger from './logger';
-import { ElementSenderService } from './element-sender-service';
+import { ElementSenderService } from './services/element-sender-service';
 import { ConfigStorage } from './storage';
 import { ExtensionConfig } from './config';
 

packages/chrome-extension/src/bridge.ts

@@ -42,7 +42,7 @@ function urlMatches(): boolean {
 }
 
 // Bridge script - runs in isolated world and forwards messages from main world to background
-logger.info('🌉 Bridge script loaded');
+logger.debug('🌉 Bridge script loaded');
 
 // Initialize configuration
 initializeConfig();

packages/chrome-extension/src/config.ts

@@ -20,7 +20,7 @@ const config: ExtensionConfig = {
   },
   logger: {
     enabled: IS_DEV,
-    level: LogLevel.DEBUG,
+    level: LogLevel.INFO,
   },
 };
 

packages/chrome-extension/src/content.ts

@@ -1,11 +1,11 @@
 // Main world script - has full access to React Fiber and can communicate with background
-import ElementPointer from './element-pointer';
+import ElementPointerService from './services/element-pointer-service';
 import logger from './logger';
 
-logger.info('🌍 MCP Pointer content script loaded');
+logger.debug('🌍 MCP Pointer content script loaded');
 
 // Initialize main world element pointer
-const pointer = new ElementPointer();
+const pointer = new ElementPointerService();
 
 if (IS_DEV) {
 // Export for potential debugging