feat: integrate all 10 skills into homelab-topology

- Added api-security-hardening (helmet, rate limits)
- Added nodejs-backend-patterns (error handling)
- Added observability-monitoring (pino logging)
- Added websocket-engineer (socket.io real-time updates)
- Added docker (Multi-stage build, compose)
- Added vitest (testing configuration and store tests)
- Added data-visualizer (MetricsBar and HostChart)
- Added infrastructure-monitoring/proxmox-admin/network-engineer types
- Fixed UI accessibility and styling
- Cleaned up node_modules tracking

server/config.ts

@@ -1,8 +1,12 @@
 import fs from 'fs';
 import path from 'path';
+import { fileURLToPath } from 'url';
+import { homedir } from 'os';
 import { HostConfig } from './types';
 
-const CONFIG_FILE = path.join(__dirname, 'config.json');
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const CONFIG_FILE = path.join(__dirname, 'hosts.json');
 
 function parseEnvHosts(): HostConfig[] {
   const hostsEnv = process.env.SSH_HOSTS;
@@ -28,24 +32,32 @@ function parseEnvHosts(): HostConfig[] {
 }
 
 function parseJsonConfig(): HostConfig[] {
-  if (!fs.existsSync(CONFIG_FILE)) return [];
+  if (!fs.existsSync(CONFIG_FILE)) {
+    console.error('Config file not found:', CONFIG_FILE);
+    return [];
+  }
 
   try {
     const content = fs.readFileSync(CONFIG_FILE, 'utf-8');
     const data = JSON.parse(content);
 
     if (!data.hosts || !Array.isArray(data.hosts)) {
+      console.error('No hosts array in config');
       return [];
     }
 
-    return data.hosts.map((h: Partial<HostConfig>) => ({
+    const hosts = data.hosts.map((h: Partial<HostConfig>) => ({
       name: h.name || '',
       ip: h.ip || '',
       sshUser: h.sshUser || 'bear',
-      sshKeyPath: h.sshKeyPath,
+      sshKeyPath: h.sshKeyPath?.replace(/^~/, homedir()),
       sshPort: h.sshPort || 22,
     })).filter((h: HostConfig) => h.name && h.ip);
-  } catch {
+    
+    console.error('Loaded hosts:', JSON.stringify(hosts));
+    return hosts;
+  } catch (e: any) {
+    console.error('Config parse error:', e.message);
     return [];
   }
 }