refactor: remove hostname port extraction, only use Advanced section

- Remove extractPortFromHostname function entirely
- Update getPortFromAdvanced to only check profile.Advanced for port
- Fallback to default port from database type dropdown if no Advanced port found
- Ensure graceful handling when port information is not available

Co-authored-by: modelorona <modelorona@users.noreply.github.com>

Author: claude[bot]

frontend/src/components/profile-info-tooltip.tsx

@@ -19,28 +19,6 @@ function isValidProfileId(profileId: string): boolean {
          /^[a-zA-Z0-9_-]+$/.test(profileId);
 }
 
-// IPv6-safe hostname/port extraction
-function extractPortFromHostname(hostname: string): string {
-  if (!hostname || typeof hostname !== 'string') {
-    return 'Default';
-  }
-  
-  // Handle IPv6 addresses by checking for square brackets
-  if (hostname.includes('[')) {
-    const match = hostname.match(/\]:(\d+)$/);
-    return match ? match[1] : 'Default';
-  }
-  
-  const parts = hostname.split(':');
-  if (parts.length > 1) {
-    const port = parts[parts.length - 1];
-    // Check if the last part is numeric (a port)
-    if (/^\d+$/.test(port)) {
-      return port;
-    }
-  }
-  return 'Default';
-}
 
 function getPortFromAdvanced(profile: LocalLoginProfile): string | null {
   const dbType = profile.Type;
@@ -57,14 +35,6 @@ function getPortFromAdvanced(profile: LocalLoginProfile): string | null {
     return portObj?.Value || defaultPort;
   }
 
-  // Check if hostname contains port info
-  if (profile.Host) {
-    const extractedPort = extractPortFromHostname(profile.Host);
-    if (extractedPort !== 'Default') {
-      return extractedPort;
-    }
-  }
-
   return defaultPort;
 }