refactor: harden type safety and modernize core forms for Svelte 5

- Standardize 'ae_BaseObj' and event types in 'ae_types.ts' to handle nullable fields from V3 API/Dexie.
- Modernize Person, Address, and Contact forms with Svelte 5 Runes and reactive synchronization.
- Refactor Event Settings and its sub-components to use the 'onsave' callback pattern, removing deprecated dispatchers.
- Hardened 'element_data_store_v2' with safe initialization and localStorage caching logic.
- Clean up unused 'element_data_store.svelte' (V1) and suppress Electron environment type errors in 'tmp_shell_handlers.ts'.
- Update documentation and workspace settings to reflect Phase 5 reactive patterns.

documentation/AETHER_NATIVE_APP_ELECTRON_NEW_2026.md

@@ -3,6 +3,11 @@
 ## 1. Overview
 The Aether Native App serves as the OS-level bridge for the SvelteKit frontend. It enables functionality that is normally restricted by browser sandboxing, such as local filesystem management, hardware telemetry, and direct control of third-party presentation software (PowerPoint, Keynote, LibreOffice).
 
+**Core Tasks (Completed Jan 2026):**
+*   **[Infrastructure]**: Restore AE Events Presentation Launcher (Electron) (ID: 221513945)
+*   **[Frontend]**: V3 File Caching: Implement Launcher CRUD Migration (ID: 173518010)
+*   **[Frontend]**: Native App Bridge: Standardize Electron IPC (ID: 173448078)
+
 ---
 
 ## 2. The Three-Layer Architecture