Refactor indexer management and improve search logic

Refactors admin settings to use a new IndexersTab and card-based indexer management UI, supporting category selection and improved configuration. Updates backend and API routes to handle indexer categories, propagate ASIN for better search scoring, and group indexers by categories to optimize Prowlarr searches. Enhances documentation to clarify non-terminal request matching and auto-completion behavior. Adds new reusable components for indexer management and category selection.

src/lib/integrations/audible.service.ts

@@ -805,6 +805,36 @@ export class AudibleService {
     return totalMinutes > 0 ? totalMinutes : undefined;
   }
 
+  /**
+   * Get runtime (in minutes) for an audiobook by ASIN
+   * Lightweight method for size validation during search
+   * Returns null if not found or error
+   */
+  async getRuntime(asin: string): Promise<number | null> {
+    try {
+      // Use Audnexus API for fast, reliable runtime data
+      const audnexusRegion = AUDIBLE_REGIONS[this.region].audnexusParam;
+
+      const response = await axios.get(`https://api.audnex.us/books/${asin}`, {
+        params: { region: audnexusRegion },
+        timeout: 5000, // Quick timeout for search performance
+        headers: { 'User-Agent': 'ReadMeABook/1.0' },
+      });
+
+      const runtimeMin = response.data?.runtimeLengthMin;
+      if (runtimeMin) {
+        return parseInt(runtimeMin);
+      }
+
+      return null;
+    } catch (error: any) {
+      if (error.response?.status !== 404) {
+        logger.debug(`Runtime fetch failed for ASIN ${asin}: ${error.message}`);
+      }
+      return null;
+    }
+  }
+
   /**
    * Add delay between requests to respect rate limits
    */