feat: open source multi-user AI notebook with observability

frontend/public/icon.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128">
+  <rect width="128" height="128" rx="32" fill="#152a25"/>
+  <path d="M31 74c16-2 19-28 35-27 14 1 13 23 29 20" fill="none" stroke="#f3f0e9" stroke-width="9" stroke-linecap="round"/>
+  <circle cx="31" cy="74" r="7" fill="#d17c57"/>
+  <circle cx="96" cy="67" r="7" fill="#f3f0e9"/>
+</svg>
+

frontend/public/manifest.webmanifest

@@ -0,0 +1,18 @@
+{
+  "name": "续想",
+  "short_name": "续想",
+  "description": "让零散念头继续生长的私人笔记本",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#f3f0e9",
+  "theme_color": "#f3f0e9",
+  "icons": [
+    {
+      "src": "/icon.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "any maskable"
+    }
+  ]
+}
+