server : (webui) revamp the input area, plus many small UI improvements (#13365)

* rework the input area

* process selected file

* change all icons to heroicons

* fix thought process collapse

* move conversation more menu to sidebar

* sun icon --> moon icon

* rm default system message

* stricter upload file check, only allow image if server has mtmd

* build it

* add renaming

* better autoscroll

* build

* add conversation group

* fix scroll

* extra context first, then user input in the end

* fix <hr> tag

* clean up a bit

* build

* add mb-3 for <pre>

* throttle adjustTextareaHeight to make it less laggy

* (nits) missing padding in sidebar

* rm stray console log

tools/server/webui/src/utils/storage.ts

@@ -116,6 +116,16 @@ const StorageUtils = {
     });
     return conv;
   },
+  /**
+   * update the name of a conversation
+   */
+  async updateConversationName(convId: string, name: string): Promise<void> {
+    await db.conversations.update(convId, {
+      name,
+      lastModified: Date.now(),
+    });
+    dispatchConversationChange(convId);
+  },
   /**
    * if convId does not exist, throw an error
    */