rename: replace all user-facing 'Atlas' references with 'Vibn'

Updated UI text in: project-shell (tab label), AtlasChat (sender name),
FreshIdeaMain, TypeSelector, MigrateSetup, ChatImportSetup, FreshIdeaSetup,
CodeImportSetup, prd/page, build/page, projects/page, deployment/page,
activity/page, layout (page title/description), atlas-chat API route.
Code identifiers (AtlasChat component name, file names) unchanged.

Made-with: Cursor

app/api/projects/[projectId]/advisor/route.ts

@@ -92,7 +92,7 @@ Operating principles:
     for (const p of phaseRows) {
       lines.push(`- ${p.title}: ${p.summary}`);
     }
-    lines.push(`(PRD not yet finalized — Atlas discovery is in progress)`);
+    lines.push(`(PRD not yet finalized — Vibn discovery is in progress)`);
   } else {
     lines.push(`\n## Product discovery: not yet started`);
   }

app/api/projects/[projectId]/atlas-chat/route.ts

@@ -133,7 +133,7 @@ export async function POST(
       body: JSON.stringify({
         // For init, send the greeting prompt but don't store it as a user message
         message: isInit
-          ? "Begin the conversation. Introduce yourself as Atlas and ask what the user is building. Do not acknowledge this as an internal trigger."
+          ? "Begin the conversation. Introduce yourself as Vibn and ask what the user is building. Do not acknowledge this as an internal trigger."
           : message,
         session_id: sessionId,
         history,
@@ -146,7 +146,7 @@ export async function POST(
       const text = await res.text();
       console.error("[atlas-chat] Agent runner error:", text);
       return NextResponse.json(
-        { error: "Atlas is unavailable. Please try again." },
+        { error: "Vibn is unavailable. Please try again." },
         { status: 502 }
       );
     }