feat: complete marketing command center with pipeline, UI, and asset generation

- Dashboard with campaign management, asset gallery, and publishing queue
- 7-agent pipeline: trend scout, research, scripts, ad creative, video, copy, distribution
- Campaign form with screenshot upload, goal picker, platform selection
- Campaign detail view with Details/Pipeline/Assets/Chat tabs
- Two-set image generation: Gemini AI (NanoBanana MCP) + Canvas Design posters
- Remotion video rendering with phone.png frame and real screenshot alignment
- honeyDue branding: blue #0079FF, orange #FF9400, Inter font, warm off-white
- Asset cards with source badges (Gemini/Canvas/Remotion/Playwright)
- Markdown/JSON render endpoint for viewing pipeline outputs as HTML
- Settings page with Tavily, Gemini, Postiz, Nextdoor integration management
- Claude Chat for campaign feedback loop with streaming SSE
- Postiz publishing modal with scheduling
- Auth with NextAuth credentials + JWT sessions
- SQLite via Prisma with better-sqlite3 adapter

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/api/campaigns/[id]/stream/route.ts

@@ -0,0 +1,44 @@
+import { auth } from "@/lib/auth";
+import { pipelineEvents } from "@/lib/claude";
+
+export async function GET(
+  request: Request,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  const session = await auth();
+  if (!session) return new Response("Unauthorized", { status: 401 });
+
+  const { id } = await params;
+  const encoder = new TextEncoder();
+
+  const stream = new ReadableStream({
+    start(controller) {
+      const handler = (event: Record<string, unknown>) => {
+        controller.enqueue(
+          encoder.encode(`data: ${JSON.stringify(event)}\n\n`)
+        );
+      };
+
+      pipelineEvents.on(id, handler);
+
+      // Keep connection alive
+      const keepAlive = setInterval(() => {
+        controller.enqueue(encoder.encode(`: keepalive\n\n`));
+      }, 15000);
+
+      request.signal.addEventListener("abort", () => {
+        pipelineEvents.off(id, handler);
+        clearInterval(keepAlive);
+        controller.close();
+      });
+    },
+  });
+
+  return new Response(stream, {
+    headers: {
+      "Content-Type": "text/event-stream",
+      "Cache-Control": "no-cache",
+      Connection: "keep-alive",
+    },
+  });
+}