🐛 fix(web-apps): fix Vite type compatibility and Svelte 5 store issues

- Simplify vite.config.ts files to avoid type incompatibility errors
  caused by different @types/node versions across the monorepo
- Add missing set() method to isSidebarMode store in matrix/web

Affected apps: calendar, chat, clock, contacts, manacore, manadeck,
matrix, nutriphi, picture, planta, presi, questions, storage, todo

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/clock/apps/web/vite.config.ts

@@ -1,13 +1,17 @@
 import { sveltekit } from '@sveltejs/kit/vite';
 import { defineConfig } from 'vite';
-import { createViteConfig, mergeViteConfig } from '@manacore/shared-vite-config';
+import { MANACORE_SHARED_PACKAGES } from '@manacore/shared-vite-config';
 
-const baseConfig = createViteConfig({
-	port: 5187,
+export default defineConfig({
+	plugins: [sveltekit()],
+	server: {
+		port: 5187,
+		strictPort: true,
+	},
+	ssr: {
+		noExternal: [...MANACORE_SHARED_PACKAGES],
+	},
+	optimizeDeps: {
+		exclude: [...MANACORE_SHARED_PACKAGES],
+	},
 });
-
-export default defineConfig(
-	mergeViteConfig(baseConfig, {
-		plugins: [sveltekit()],
-	})
-);