rename: 'CCAI Vibe Demo' -> 'Collaborative Conversational AI (CCAI) Demo'

Updates the user-visible product name everywhere it surfaced as a string:
README frontmatter + H1, FastAPI app title, header H1, prompt-catalog
download banner, and the additive-styles file header. No behavior
change.

Co-authored-by: Cursor <cursoragent@cursor.com>

README.md

@@ -1,5 +1,5 @@
 ---
-title: CCAI Vibe Demo
+title: Collaborative Conversational AI (CCAI) Demo
 emoji: 🤝
 colorFrom: blue
 colorTo: purple
@@ -11,7 +11,7 @@ hf_oauth_scopes:
 pinned: false
 ---
 
-# CCAI Vibe Demo
+# Collaborative Conversational AI (CCAI) Demo
 
 A demo of **Collaborative Conversational AI (CCAI)** - Neon.ai's patented
 group-discussion technology. Up to 9 participants (any mix of AI personas,

backend/app/main.py

@@ -41,7 +41,11 @@ async def lifespan(app: FastAPI):
     await close_shared_client()
 
 
-app = FastAPI(title="CCAI Vibe Demo", version="1.0.0", lifespan=lifespan)
+app = FastAPI(
+    title="Collaborative Conversational AI (CCAI) Demo",
+    version="1.0.0",
+    lifespan=lifespan,
+)
 
 app.add_middleware(
     SessionMiddleware,

frontend/src/components/Header.js

@@ -36,7 +36,7 @@ export default function Header({
         <h1 className="app-title">
           <a href="https://www.neon.ai/" target="_blank" rel="noopener noreferrer" className="app-title-link">
             Neon.ai
-          </a> - CCAI Vibe Demo
+          </a> - Collaborative Conversational AI (CCAI) Demo
         </h1>
       </div>
       <div className="header-right">

frontend/src/components/PromptCatalogModal.js

@@ -157,7 +157,7 @@ function renderCatalogAsText(catalog) {
   const lines = [];
   const banner = '═'.repeat(64);
   lines.push(banner);
-  lines.push('CCAI Vibe Demo — Current chat prompts');
+  lines.push('Collaborative Conversational AI (CCAI) Demo — Current chat prompts');
   lines.push(`Generated: ${now}`);
   lines.push(banner);
   lines.push('');

frontend/src/styles/ccai.css

@@ -1,5 +1,6 @@
 /* ════════════════════════════════════════════════════════════════
-   CCAI Vibe Demo - additive styles on top of LLMChats3 baseline.
+   Collaborative Conversational AI (CCAI) Demo - additive styles on
+   top of LLMChats3 baseline.
    Anything new (multi-participant sidebar, dropdown, expert modal,
    table view, orchestrator banners, failsafe banner) lives here.
    ════════════════════════════════════════════════════════════════ */