Add Frigate config merging and camera database updates

- Refactor Frigate generator to support adding cameras to existing configs
- Add text-based YAML parsing to preserve formatting and comments
- Implement duplicate camera/stream name detection and auto-numbering
- Add support for inserting cameras into existing go2rtc and cameras sections
- Update UI: add textarea for existing config input and generate button
- Preserve user's existing configuration when adding new cameras
- Add example config template for new users
- Update ConfigPanel to initialize Frigate tab instead of auto-generating
- Add FrigateGenerator import to main.js
- Add custom styles for Frigate config input and output sections
- Support both empty config (create from scratch) and existing config (merge) modes

Camera database updates:
- Add OpenIPC firmware camera support (257 models)
- Add Yi-Hack firmware variants (v4, v5, Allwinner, MStar)
- Add Fang-Hacks firmware support
- Add OpenMiko firmware support
- Update Sonoff camera models
- Update Thingino firmware camera models

webui/web/js/ui/config-panel.js

@@ -21,15 +21,59 @@ export class ConfigPanel {
             document.getElementById('selected-sub-url').textContent = this.maskCredentials(subStream.url);
         }
 
-        // Generate configs
+        // Generate configs for URL and Go2RTC (as before)
         const urlConfig = this.generateURLConfig();
         const go2rtcConfig = Go2RTCGenerator.generate(mainStream, subStream);
-        const frigateConfig = FrigateGenerator.generate(mainStream, subStream);
 
         // Update config displays
         document.getElementById('config-url').textContent = urlConfig;
         document.getElementById('config-go2rtc').textContent = go2rtcConfig;
-        document.getElementById('config-frigate').textContent = frigateConfig;
+
+        // For Frigate: initialize the tab instead of generating automatically
+        this.initializeFrigateTab();
+    }
+
+    /**
+     * Initialize Frigate tab with example config
+     */
+    initializeFrigateTab() {
+        const textarea = document.getElementById('existing-frigate-config');
+        const outputSection = document.getElementById('frigate-output-section');
+
+        // Show example config if field is empty
+        if (!textarea.value || textarea.value.trim() === '') {
+            textarea.value = this.getExampleConfig();
+        }
+
+        // Hide output section
+        outputSection.classList.add('hidden');
+        document.getElementById('config-frigate').textContent = '';
+    }
+
+    /**
+     * Get example Frigate config
+     */
+    getExampleConfig() {
+        return `mqtt:
+  enabled: false
+
+# Global Recording Settings
+record:
+  enabled: true
+  retain:
+    days: 7
+    mode: motion  # Record only on motion detection
+
+# Go2RTC Configuration (Frigate built-in)
+go2rtc:
+  streams:
+    # Your existing streams will be preserved here
+
+# Frigate Camera Configuration
+cameras:
+  # Your existing cameras will be preserved here
+
+version: 0.16-0`;
     }
 
     generateURLConfig() {