feat: add disclaimer to README and update placeholder text in ChatInput component

Author: milisp

README.md

@@ -20,6 +20,10 @@ TLDR: Notepad + @file from FileTree + git diff + streaming chat + agent + mcp
 
 ![demo](public/codexia.png)
 
+## Disclaimer
+
+Codexia is an independent open-source project and is not built by OpenAI or any company.
+
 ## ✨ Features
 
 ### 🔄 **Multi-Session Support**

src/components/chat/ChatInput.tsx

@@ -212,7 +212,7 @@ export const ChatInput: React.FC<ChatInputProps> = ({
           value={inputValue}
           onChange={(e) => onInputChange(e.target.value)}
           onKeyDown={handleKeyPress}
-          placeholder={placeholderOverride || "Type your message..."}
+          placeholder={placeholderOverride || "Ask Codex to do anything"}
           className={`min-h-[60px] max-h-[200px] pr-32 bg-gray-100 resize-none overflow-y-auto pb-8 ${
             (fileReferences.length > 0 || mediaAttachments.length > 0) ? 'pt-8' : ''
           }`}

src/components/layout/AppToolbar.tsx

@@ -6,7 +6,7 @@ import {
   PanelLeftClose,
   PanelLeftOpen,
   FolderTree,
-  Plus,
+  PencilIcon,
 } from "lucide-react";
 import { Tabs, TabsList, TabsTrigger } from "../ui/tabs";
 import { useConversationStore } from "@/stores/ConversationStore";
@@ -142,7 +142,7 @@ export const AppToolbar: React.FC<AppToolbarProps> = ({
             className="h-7 w-7 p-0"
             title="Create New Conversation"
           >
-            <Plus className="h-3 w-3" />
+            <PencilIcon className="h-3 w-3" />
           </Button>
 
           {/* Settings Button */}
@@ -159,14 +159,14 @@ export const AppToolbar: React.FC<AppToolbarProps> = ({
       )}
 
       {activeTab === "notes" && (
-        <div className="flex items-center gap-1 shrink-0">
+        <div className="flex items-center gap-1 shrink-0 pr-2">
           <Button
             onClick={handleCreateNote}
             size="sm"
             className="h-7 w-7 p-0"
             title="Create New Note"
           >
-            <Plus className="h-3 w-3" />
+            <PencilIcon className="h-3 w-3" />
           </Button>
         </div>
       )}