feat: Add Wild Central web app (Central-only UI)

Extract Central pages from the wild-cloud web app into a standalone
React app for Wild Central. Includes:

- Central overview, DNS, DHCP, Firewall, VPN, Ingress, CrowdSec pages
- Simplified sidebar with Central-only navigation
- Branding updated to "Wild Central"
- All Cloud-specific pages, components, hooks, and API services removed
- TypeScript type-check and production build pass

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web/src/services/api-legacy.ts

@@ -0,0 +1,132 @@
+import type {
+  Status,
+  GlobalConfig,
+  GlobalConfigResponse,
+  HealthResponse,
+  StatusResponse,
+  NetworkInfo,
+  DnsmasqStatus,
+  DnsmasqConfigResponse
+} from '../types';
+import { getApiBaseUrl } from './api/config';
+
+const API_BASE = getApiBaseUrl();
+
+class ApiService {
+  private baseUrl: string;
+
+  constructor(baseUrl: string = API_BASE) {
+    this.baseUrl = baseUrl;
+  }
+
+  private async request<T>(endpoint: string, options?: RequestInit): Promise<T> {
+    const url = `${this.baseUrl}${endpoint}`;
+    const response = await fetch(url, options);
+    
+    if (!response.ok) {
+      throw new Error(`HTTP error! status: ${response.status}`);
+    }
+    
+    return response.json();
+  }
+
+  private async requestText(endpoint: string, options?: RequestInit): Promise<string> {
+    const url = `${this.baseUrl}${endpoint}`;
+    const response = await fetch(url, options);
+    
+    if (!response.ok) {
+      throw new Error(`HTTP error! status: ${response.status}`);
+    }
+    
+    return response.text();
+  }
+
+  async getStatus(): Promise<Status> {
+    return this.request<Status>('/api/status');
+  }
+
+  async getHealth(): Promise<HealthResponse> {
+    return this.request<HealthResponse>('/api/v1/health');
+  }
+
+  // ========================================
+  // Global Config APIs (Wild Central level)
+  // Endpoint: /api/v1/config
+  // ========================================
+
+  async getConfig(): Promise<GlobalConfigResponse> {
+    return this.request<GlobalConfigResponse>('/api/v1/config');
+  }
+
+  async getConfigYaml(): Promise<string> {
+    return this.requestText('/api/v1/config/yaml');
+  }
+
+  async updateConfigYaml(yamlContent: string): Promise<StatusResponse> {
+    return this.request<StatusResponse>('/api/v1/config/yaml', {
+      method: 'PUT',
+      headers: { 'Content-Type': 'text/plain' },
+      body: yamlContent
+    });
+  }
+
+  async createConfig(config: GlobalConfig): Promise<StatusResponse> {
+    return this.request<StatusResponse>('/api/v1/config', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(config)
+    });
+  }
+
+  async updateConfig(config: GlobalConfig): Promise<StatusResponse> {
+    return this.request<StatusResponse>('/api/v1/config', {
+      method: 'PUT',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(config)
+    });
+  }
+
+  async getDnsmasqStatus(): Promise<DnsmasqStatus> {
+    return this.request<DnsmasqStatus>('/api/v1/dnsmasq/status');
+  }
+
+  async getDnsmasqConfig(): Promise<DnsmasqConfigResponse> {
+    return this.request<DnsmasqConfigResponse>('/api/v1/dnsmasq/config');
+  }
+
+  async writeDnsmasqConfig(content: string): Promise<StatusResponse> {
+    return this.request<StatusResponse>('/api/v1/dnsmasq/config', {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({ content }),
+    });
+  }
+
+  async generateDnsmasqConfig(overwrite: boolean = false): Promise<DnsmasqConfigResponse> {
+    const url = overwrite ? '/api/v1/dnsmasq/generate?overwrite=true' : '/api/v1/dnsmasq/generate';
+    return this.request<DnsmasqConfigResponse>(url, {
+      method: 'POST'
+    });
+  }
+
+  async restartDnsmasq(): Promise<StatusResponse> {
+    return this.request<StatusResponse>('/api/v1/dnsmasq/restart', {
+      method: 'POST'
+    });
+  }
+
+  async getNetworkInfo(): Promise<NetworkInfo> {
+    return this.request<NetworkInfo>('/api/v1/network/info');
+  }
+
+  async downloadPXEAssets(): Promise<StatusResponse> {
+    return this.request<StatusResponse>('/api/v1/assets', {
+      method: 'POST'
+    });
+  }
+}
+
+export const apiService = new ApiService();
+export default ApiService;