Migrate Event child modules to unified type system

- Added ae_EventFile, ae_EventDevice, ae_EventAbstract, and ae_Organization to ae_types.ts.
- Replaced local interfaces in EventFile and EventDevice logic files with unified imports.
- Standardized Promise return types for all core data loading, creation, search, and update functions.
- Integrated triple-ID patterns for Dexie and V3 API parity across files and devices.

src/lib/types/ae_types.ts

@@ -609,4 +609,72 @@ export interface ae_ArchiveContent extends ae_BaseObj {
     
     hosted_file_id_random?: string;
     filename?: string;
-}
+}
+
+/**
+ * EventFile - A file associated with an event or event component
+ */
+export interface ae_EventFile extends ae_BaseObj {
+    event_file_id: string;
+    event_file_id_random: string;
+    event_id: string;
+    event_id_random: string;
+    
+    hosted_file_id_random?: string;
+    for_type?: string;
+    for_id_random?: string;
+    
+    filename?: string;
+    filename_no_ext?: string;
+    extension?: string;
+    
+    file_purpose?: string;
+    approve?: boolean;
+}
+
+/**
+ * EventDevice - A local hardware device at an event
+ */
+export interface ae_EventDevice extends ae_BaseObj {
+    event_device_id: string;
+    event_device_id_random: string;
+    event_id: string;
+    event_id_random: string;
+    event_location_id_random?: string;
+    
+    app_mode?: string;
+    status?: string;
+    heartbeat?: string | Date;
+    
+    info_hostname?: string;
+    info_ip?: string;
+}
+
+/**
+ * EventAbstract - A proposal for a session or presentation
+ */
+export interface ae_EventAbstract extends ae_BaseObj {
+    event_abstract_id: string;
+    event_abstract_id_random: string;
+    event_id: string;
+    event_id_random: string;
+    
+    external_id?: string;
+    abstract?: string;
+    status?: number;
+    approve?: boolean;
+}
+
+/**
+ * Organization - A business or group entity
+ */
+export interface ae_Organization extends ae_BaseObj {
+    organization_id: string;
+    organization_id_random: string;
+    account_id: string;
+    account_id_random: string;
+    
+    tagline?: string;
+    logo_path?: string;
+    industry?: number;
+}