fix(search): allow remote backends to re-index on mobile when disableIndexOnMobile is enabled (#2308)

The disableIndexOnMobile guard was blocking all re-indexing on mobile,
including the Miyo backend which is a remote HTTP service with no local
index. Add isRemoteBackend() to SemanticIndexBackend interface so guards
in IndexEventHandler and VectorStoreManager can skip the check for
remote backends.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

src/search/indexBackend/MiyoIndexBackend.ts

@@ -274,6 +274,15 @@ export class MiyoIndexBackend implements SemanticIndexBackend {
     return;
   }
 
+  /**
+   * Miyo is a remote HTTP backend with no local index.
+   *
+   * @returns True because Miyo sends data to a remote service.
+   */
+  public isRemoteBackend(): boolean {
+    return true;
+  }
+
   /**
    * Resolve the Miyo base URL using settings and discovery.
    *

src/search/indexBackend/OramaIndexBackend.ts

@@ -185,6 +185,15 @@ export class OramaIndexBackend implements SemanticIndexBackend {
     this.dbOps.onunload();
   }
 
+  /**
+   * Orama uses a local index, so it is not a remote backend.
+   *
+   * @returns False because Orama stores data locally.
+   */
+  public isRemoteBackend(): boolean {
+    return false;
+  }
+
   /**
    * Return the underlying Orama database instance when available.
    */

src/search/indexBackend/SemanticIndexBackend.ts

@@ -122,4 +122,11 @@ export interface SemanticIndexBackend {
    * Flush or persist any pending backend work before unload.
    */
   onunload(): void;
+
+  /**
+   * Return true when this backend is remote (e.g. Miyo) and does not use a local index.
+   * Used to bypass the `disableIndexOnMobile` guard for remote backends that have no
+   * local storage concerns.
+   */
+  isRemoteBackend(): boolean;
 }

src/search/indexEventHandler.ts

@@ -72,7 +72,11 @@ export class IndexEventHandler {
     if (!this.shouldHandleEvents()) {
       return;
     }
-    if (Platform.isMobile && getSettings().disableIndexOnMobile) {
+    if (
+      Platform.isMobile &&
+      getSettings().disableIndexOnMobile &&
+      !this.indexBackend.isRemoteBackend()
+    ) {
       return;
     }
 

src/search/vectorStoreManager.ts

@@ -130,7 +130,11 @@ export default class VectorStoreManager {
       return 0;
     }
 
-    if (Platform.isMobile && getSettings().disableIndexOnMobile) {
+    if (
+      Platform.isMobile &&
+      getSettings().disableIndexOnMobile &&
+      !this.indexBackend.isRemoteBackend()
+    ) {
       new Notice("Indexing is disabled on mobile devices");
       return 0;
     }