add orchestrator chat to project overview

- OrchestratorChat component with Lovable-style UI (suggestion chips, reasoning panel, tool call badges)
- /api/projects/[projectId]/agent-chat proxy route to agent runner
- Injects project context (repo, vision, deployment URL) into session
- AGENT_RUNNER_URL wired to agents.vibnai.com

Made-with: Cursor

app/[workspace]/project/[projectId]/overview/page.tsx

@@ -12,6 +12,7 @@ import {
 } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
+import { OrchestratorChat } from "@/components/OrchestratorChat";
 import {
   GitBranch,
   GitCommit,
@@ -198,6 +199,12 @@ export default function ProjectOverviewPage() {
   return (
     <div className="container mx-auto py-8 px-6 max-w-5xl space-y-6">
 
+      {/* ── Orchestrator Chat ── */}
+      <OrchestratorChat
+        projectId={projectId}
+        projectName={project.productName}
+      />
+
       {/* ── Header ── */}
       <div className="flex items-start justify-between">
         <div>