Refactor hooks and worker service for improved error handling and initialization

- Removed try-catch blocks in new-hook, save-hook, and summary-hook for cleaner flow.
- Enhanced error handling in save and summary hooks to throw errors instead of logging and returning.
- Introduced ensureWorkerRunning utility to manage worker service lifecycle and health checks.
- Replaced dynamic port allocation with a fixed port for the worker service.
- Simplified path management and removed unused port allocator utility.
- Added database schema initialization for fresh installations and improved migration handling.

src/utils/port-allocator.ts

@@ -1,63 +0,0 @@
-import net from 'net';
-
-/**
- * Port Allocator Utility
- * Finds available ports dynamically for worker service
- */
-
-const PORT_RANGE_START = 37000;
-const PORT_RANGE_END = 37999;
-
-/**
- * Check if a port is available
- */
-function isPortAvailable(port: number): Promise<boolean> {
-  return new Promise((resolve) => {
-    const server = net.createServer();
-
-    server.once('error', (err: any) => {
-      if (err.code === 'EADDRINUSE') {
-        resolve(false);
-      } else {
-        resolve(false);
-      }
-    });
-
-    server.once('listening', () => {
-      server.close();
-      resolve(true);
-    });
-
-    server.listen(port, '127.0.0.1');
-  });
-}
-
-/**
- * Find an available port in the configured range
- * Returns a port number or null if none available
- */
-export async function findAvailablePort(): Promise<number | null> {
-  // Try random ports first (faster for sparse allocation)
-  for (let i = 0; i < 10; i++) {
-    const randomPort = Math.floor(Math.random() * (PORT_RANGE_END - PORT_RANGE_START + 1)) + PORT_RANGE_START;
-    if (await isPortAvailable(randomPort)) {
-      return randomPort;
-    }
-  }
-
-  // Fall back to sequential search
-  for (let port = PORT_RANGE_START; port <= PORT_RANGE_END; port++) {
-    if (await isPortAvailable(port)) {
-      return port;
-    }
-  }
-
-  return null;
-}
-
-/**
- * Check if a specific port is available
- */
-export async function checkPort(port: number): Promise<boolean> {
-  return isPortAvailable(port);
-}