♻️ refactor: optimize state management, switch to @tanstack/vue-virtual, and improve performance

- Centralize `useAgents` and `useModels` state within the Nuxt app context to prevent data leaks and improve initialization.
- Migrate virtualization from `vue-virtual-scroller` to `@tanstack/vue-virtual` with new `RowVirtualizerFixed` and `RowVirtualizerDynamic` components.
- Upgrade Nuxt to v4.3.1 and remove `@vue-macros/nuxt`.
- Replace `big.js` with an optimized custom `lshDecimal` string manipulation logic for pricing calculations in the provider API.
- Implement automatic focus redirection in `ChatInput` to capture standard keyboard input.
- Refactor Sidenav and Settings components to utilize virtualization for long lists (topics, agents, models).
- Enhance theme colors and mobile experience. More work to come on both of these.

nuxt.config.ts

@@ -10,6 +10,7 @@ export default defineNuxtConfig({
             },
             meta: [
                 { name: 'viewport', content: 'width=device-width, initial-scale=1' },
+                { name: 'format-detection', content: 'telephone=no' },
                 {
                     name: 'description',
                     content: 'A chat-based AI assistant for your LLMs.',
@@ -81,6 +82,12 @@ export default defineNuxtConfig({
         },
     },
 
+    vue: {
+        config: {
+            performance: true,
+        }
+    },
+
     vite: {
         server: {
             allowedHosts: true,
@@ -109,10 +116,10 @@ export default defineNuxtConfig({
                 '@vue/devtools-kit',
                 '@sentry/nuxt',
                 '@nuxt/hints/runtime/hydration/component',
-                'vue-virtual-scroller',
+                '@nuxt/hints/runtime/lazy-load/composables',
+                '@tanstack/vue-virtual',
                 'shiki',
                 'better-auth/vue',
-                'big.js',
                 'unified',
                 'remark-gfm',
                 'remark-parse',
@@ -122,9 +129,17 @@ export default defineNuxtConfig({
                 'unist-util-visit',
                 '@triplit/client',
                 '@triplit/db',
-                'comlink'
+                'sorted-btree',
+                'elen',
+                'comlink',
+                'nanoid'
             ],
         },
+        build: {
+            commonjsOptions: {
+                transformMixedEsModules: true,
+            }
+        },
     },
 
     nitro: {
@@ -138,7 +153,14 @@ export default defineNuxtConfig({
     //     viewTransition: true,
     // },
 
-    modules: ['@vue-macros/nuxt', '@nuxt/hints', '@nuxt/icon', '@unocss/nuxt', 'triplit-nuxt', '@sentry/nuxt/module', '@nuxt/fonts'],
+    modules: [
+        '@nuxt/hints',
+        '@nuxt/icon',
+        '@unocss/nuxt',
+        'triplit-nuxt',
+        // '@sentry/nuxt/module',
+        '@nuxt/fonts'
+    ],
 
     triplit: {
         schema_path: './triplit/schema.ts',
@@ -159,10 +181,10 @@ export default defineNuxtConfig({
 
     compatibilityDate: '2025-07-15',
 
-    sentry: {
-        org: 'veridian-ol',
-        project: 'javascript-nuxt',
-    },
+    // sentry: {
+    //     org: 'veridian-ol',
+    //     project: 'javascript-nuxt',
+    // },
 
     sourcemap: {
         client: 'hidden',