Fix broken build + uncover localization tests (#702)

* Move LocalizationCatalogTests out of Localization/

SPM is treating all the files under Localization as a resource as per the Package.swift, hence it’s not even building it

* Use a class object vs struct to fix build issue

* Explicitly check that the output is not a l10n key

* Remove skipped test

bitchatTests/EndToEnd/PrivateChatE2ETests.swift

@@ -274,14 +274,6 @@ final class PrivateChatE2ETests: XCTestCase {
         wait(for: [expectation], timeout: TestConstants.defaultTimeout)
     }
     
-    // MARK: - Error Handling Tests
-    
-    // NOTE: This test relied on MessageRetryService which has been removed
-    
-    func testDuplicateAckPrevention() throws {
-        throw XCTSkip("DeliveryTracker/ACK flow removed; test not applicable")
-    }
-    
     // MARK: - Helper Methods
     
     private func createMockService(peerID: String, nickname: String) -> MockBluetoothMeshService {

bitchatTests/LocalizationCatalogTests.swift

@@ -248,7 +248,7 @@ final class LocalizationCatalogTests: XCTestCase {
   /// the test bundle, preventing false positives where localization keys are 
   /// returned instead of translated strings.
   private func appBundle() -> Bundle {
-    Bundle(for: BitchatApp.self)
+    Bundle(for: ChatViewModel.self)
   }
 
   /// Tests to prevent regression of the pluralization format string issue

bitchatTests/LocationNotesManagerTests.swift

@@ -22,6 +22,8 @@ final class LocationNotesManagerTests: XCTestCase {
         XCTAssertEqual(manager.state, .noRelays)
         XCTAssertTrue(manager.initialLoadComplete)
         XCTAssertEqual(manager.errorMessage, String(localized: "location_notes.error.no_relays"))
+        // Make sure we're getting an actual translated value and not the localization key
+        XCTAssertNotEqual(manager.errorMessage, "location_notes.error.no_relays")
     }
 
     func testSendWhenNoRelaysSurfacesError() {
@@ -41,6 +43,8 @@ final class LocationNotesManagerTests: XCTestCase {
         XCTAssertFalse(sendCalled)
         XCTAssertEqual(manager.state, .noRelays)
         XCTAssertEqual(manager.errorMessage, String(localized: "location_notes.error.no_relays"))
+        // Make sure we're getting an actual translated value and not the localization key
+        XCTAssertNotEqual(manager.errorMessage, "location_notes.error.no_relays")
     }
 
     func testSubscribeUsesGeoRelaysAndAppendsNotes() {