refactor: Complete rewrite of worker-utils.ts and cleanup of worker-service.ts

- Removed fragile PM2 string parsing and replaced with direct PM2 restart logic.
- Eliminated silent error handling in worker-utils.ts for better error visibility.
- Extracted duplicated session auto-creation logic into a new helper method getOrCreateSession() in worker-service.ts.
- Centralized configuration values and replaced magic numbers with named constants.
- Updated health check logic to ensure worker is restarted if unhealthy.
- Removed unnecessary getWorkerPort() wrapper function.
- Improved overall code quality and maintainability by applying DRY and YAGNI principles.

src/hooks/user-message-hook.ts

@@ -10,6 +10,7 @@ import { execSync } from "child_process";
 import { join } from "path";
 import { homedir } from "os";
 import { existsSync } from "fs";
+import { getWorkerPort } from "../shared/worker-utils.js";
 
 // Check if node_modules exists - if not, this is first run
 const pluginDir = join(homedir(), '.claude', 'plugins', 'marketplaces', 'thedotmack');
@@ -46,11 +47,12 @@ try {
     encoding: 'utf8'
   });
 
+  const port = getWorkerPort();
   console.error(
     "\n\n📝 Claude-Mem Context Loaded\n" +
     "   ℹ️  Note: This appears as stderr but is informational only\n\n" +
     output +
-    "\n\n📺 Watch live in browser http://localhost:37777/ (New! v5.1)\n"
+    `\n\n📺 Watch live in browser http://localhost:${port}/ (New! v5.1)\n`
   );
 
 } catch (error) {