Improve camera model search with per-model ranking and two-stage loading

- Split camera results into individual models (Brand: Model format)
- Add model-specific relevance scoring for better search results
- Implement two-stage autocomplete: 10 results immediately, 50 after 1 second
- Filter out "Other" models from search results
- Sort models by relevance score (exact matches first)
- Add auto.json brand for automatic detection fallback

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

webui/web/js/api/camera-search.js

@@ -0,0 +1,27 @@
+export class CameraSearchAPI {
+    constructor(baseURL = null) {
+        // Auto-detect API URL based on current host
+        if (!baseURL) {
+            const currentHost = window.location.hostname;
+            this.baseURL = `http://${currentHost}:8080`;
+        } else {
+            this.baseURL = baseURL;
+        }
+    }
+
+    async search(query, limit = 10) {
+        const response = await fetch(`${this.baseURL}/api/v1/cameras/search`, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            },
+            body: JSON.stringify({ query, limit }),
+        });
+
+        if (!response.ok) {
+            throw new Error(`HTTP error! status: ${response.status}`);
+        }
+
+        return await response.json();
+    }
+}