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.

src/routes/core/contacts/ae_comp__contact_form.svelte

@@ -19,19 +19,36 @@
 
     // Form State (Runes)
     let formData = $state({
-        title: contact?.title ?? '',
-        tagline: contact?.tagline ?? '',
-        email: contact?.email ?? '',
-        phone_mobile: contact?.phone_mobile ?? '',
-        phone_office: contact?.phone_office ?? '',
-        website_url: contact?.website_url ?? '',
-        facebook_url: contact?.facebook_url ?? '',
-        instagram_url: contact?.instagram_url ?? '',
-        linkedin_url: contact?.linkedin_url ?? '',
-        notes: contact?.notes ?? '',
-        enable: contact?.enable ?? true,
-        hide: contact?.hide ?? false,
-        priority: contact?.priority ?? false
+        title: '',
+        tagline: '',
+        email: '',
+        phone_mobile: '',
+        phone_office: '',
+        website_url: '',
+        facebook_url: '',
+        instagram_url: '',
+        linkedin_url: '',
+        notes: '',
+        enable: true,
+        hide: false,
+        priority: false
+    });
+
+    // Reset form when contact prop changes
+    $effect(() => {
+        formData.title = contact?.title ?? '';
+        formData.tagline = contact?.tagline ?? '';
+        formData.email = contact?.email ?? '';
+        formData.phone_mobile = contact?.phone_mobile ?? '';
+        formData.phone_office = contact?.phone_office ?? '';
+        formData.website_url = contact?.website_url ?? '';
+        formData.facebook_url = contact?.facebook_url ?? '';
+        formData.instagram_url = contact?.instagram_url ?? '';
+        formData.linkedin_url = contact?.linkedin_url ?? '';
+        formData.notes = contact?.notes ?? '';
+        formData.enable = contact?.enable ?? true;
+        formData.hide = contact?.hide ?? false;
+        formData.priority = contact?.priority ?? false;
     });
 
     let is_loading = $state(false);