feat: add chat and file management APIs, implement chat loading and saving functionality

- Introduced new API endpoints for chat management including posting and retrieving chat messages.
- Implemented file upload and deletion functionalities for chat and other files.
- Added utility functions for streaming text and loading chat data.
- Created TypeScript types for models and agents used in the application.
- Configured TypeScript settings for server and project.
- Added favicon and workspace configuration for pnpm.

nuxt.config.ts

@@ -0,0 +1,40 @@
+export default defineNuxtConfig({
+  modules: [
+    '@nuxthub/core',
+    '@nuxt/eslint',
+    '@nuxt/ui',
+    '@nuxt/icon',
+    '@nuxtjs/mdc'
+  ],
+
+  devtools: { enabled: true },
+
+  css: ['~/assets/css/main.css'],
+
+  runtimeConfig: {
+    cloudflare: {
+      email: '',
+      apiKey: '',
+      accountId: ''
+    }
+  },
+
+  future: { compatibilityVersion: 4 },
+
+  compatibilityDate: '2025-03-01',
+
+  hub: {
+    ai: true,
+    cache: true,
+    blob: true
+  },
+
+  eslint: {
+    config: {
+      stylistic: {
+        quotes: 'single',
+        commaDangle: 'never'
+      }
+    }
+  }
+})