test: use AgentActionRegistry.shared singleton in tests

Refactor AgentActionRegistryTests to use AgentActionRegistry.shared instead of manually instantiating the class with a NotificationCenter. This aligns the test suite with the updated singleton pattern and simplifies the test setup.

Author: tooury

.gitignore

@@ -730,14 +730,13 @@ Axon/Config/PublicConfig.local.plist
 !Axon/ViewModels/SettingsViewModels/APIKeysSettingsViewModel.swift
 
 Axon/Resources/BundleResources/Testing/Out of Flux - finallyfree.mp3
-.gitignore
-.gitignore
 Axon/Resources/BundleResources/Testing/TestImage.png
 Axon/Resources/BundleResources/Testing/TestVideo.mp4
 Axon/Resources/BundleResources/Testing/Speech-to-Text-n-Audio-Understanding-Test-Audio.mp3
-Axon/Resources/gemma-4-E2B-it-MLX/model.safetensors
-Axon/Resources/gemma-4-E2B-it-MLX/tokenizer_config.json
-Axon/Resources/gemma-4-E2B-it-MLX/tokenizer.json
-Axon/Resources/gemma-4-E2B-it-MLX/config.json
-Axon/Resources/gemma-4-E2B-it-MLX/generation_config.json
-Axon/Resources/gemma-4-E2B-it-MLX/README.md
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/model.safetensors
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/tokenizer_config.json
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/tokenizer.json
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/config.json
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/generation_config.json
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/special_tokens_map.json
+Axon/Resources/MLXModels/google_gemma-4-E2B-it-MLX/README.md

AxonTests/AgentActionRegistryTests.swift

@@ -5,7 +5,7 @@ import XCTest
 final class AgentActionRegistryTests: XCTestCase {
 
     func testDiscoverActionsIncludesCoreSet() {
-        let registry = AgentActionRegistry(notificationCenter: NotificationCenter())
+        let registry = AgentActionRegistry.shared
         let actions = registry.discoverActions()
         let ids = Set(actions.map(\.id))
 
@@ -16,21 +16,21 @@ final class AgentActionRegistryTests: XCTestCase {
     }
 
     func testDiscoverActionsFiltersByView() {
-        let registry = AgentActionRegistry(notificationCenter: NotificationCenter())
+        let registry = AgentActionRegistry.shared
         let actions = registry.discoverActions(view: "settings")
 
         XCTAssertFalse(actions.isEmpty)
         XCTAssertTrue(actions.contains(where: { $0.id == "open_settings" }))
     }
 
     func testDiscoverActionsUnknownPlatformReturnsEmpty() {
-        let registry = AgentActionRegistry(notificationCenter: NotificationCenter())
+        let registry = AgentActionRegistry.shared
         let actions = registry.discoverActions(platform: "linux")
         XCTAssertTrue(actions.isEmpty)
     }
 
     func testRiskMetadataMarksSensitiveActions() {
-        let registry = AgentActionRegistry(notificationCenter: NotificationCenter())
+        let registry = AgentActionRegistry.shared
         let actions = registry.discoverActions()
 
         guard let send = actions.first(where: { $0.id == "send_message" }) else {
@@ -47,7 +47,7 @@ final class AgentActionRegistryTests: XCTestCase {
     }
 
     func testInvokeUnknownActionFailsDeterministically() async {
-        let registry = AgentActionRegistry(notificationCenter: NotificationCenter())
+        let registry = AgentActionRegistry.shared
         let result = await registry.invokeAction(id: "not_real_action")
 
         XCTAssertFalse(result.success)