Fixes and improvements (#617)

Modules/app-module/include/app/event.h

@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: Apache-2.0
 #pragma once
 
+#include "instance.h"
+
 #include <stddef.h>
 #include <stdint.h>
 
@@ -54,7 +56,7 @@ struct AppEvent {
  */
 struct AppEventSubscription {
     /** The app instance this subscription receives events for; set by the caller before app_event_subscribe(). */
-    uint32_t app_instance_id;
+    AppInstanceId app_instance_id;
 
     TaskHandle_t task;
 
@@ -89,7 +91,7 @@ error_t app_event_unsubscribe(struct AppEventSubscription* sub);
  * @retval ERROR_RESOURCE at least one matching subscription's queue was full; the event was
  * dropped for that subscription (still delivered to any other matching subscription)
  */
-error_t app_event_emit(uint32_t app_instance_id, const struct AppEvent* event);
+error_t app_event_emit(AppInstanceId app_instance_id, const struct AppEvent* event);
 
 /**
  * Pop the next event for @a sub, blocking up to @a timeout if the queue is currently empty.

Modules/app-module/include/app/manager.h

@@ -152,6 +152,14 @@ error_t app_manager_install_path_add(const char* path);
  */
 void app_manager_install_path_scan(void);
 
+/**
+ * Uninstalls an app that was registered via app_manager_install_path_scan() (i.e. discovered on
+ * disk, not installed via app_install()). Stops running instances, removes the manifest
+ * registration, and deletes the app directory. Returns ERROR_NOT_FOUND if the app id is not in
+ * the scan registry.
+ */
+error_t app_manager_install_path_uninstall(const char* app_id);
+
 #ifdef __cplusplus
 }
 #endif