Initial commit: RA-H Open Source Edition

Local-first knowledge management system with BYO API keys.

Features:
- 3-panel UI (Nodes | Focus | Helpers)
- SQLite + sqlite-vec for vector search
- Agent system (Easy/Hard mode orchestrators)
- Content extraction (YouTube, PDF, web)
- Integrate workflow for connection discovery
- Dimension system with auto-assignment

Tech stack:
- Next.js 15 + TypeScript + Tailwind CSS
- Anthropic (Claude) + OpenAI (GPT) via Vercel AI SDK

Setup:
  npm install && npm rebuild better-sqlite3
  scripts/dev/bootstrap-local.sh
  npm run dev

MIT License

app/api/events/route.ts

@@ -0,0 +1,53 @@
+/**
+ * Server-Sent Events (SSE) API Route
+ * Streams real-time database change events to connected clients
+ */
+
+import { eventBroadcaster } from '@/services/events';
+
+export async function GET() {
+  const encoder = new TextEncoder();
+
+  const stream = new ReadableStream({
+    start(controller) {
+      // Add this connection to the broadcaster
+      console.log('🔌 New SSE connection established');
+      eventBroadcaster.addConnection(controller);
+      console.log('📊 Total SSE connections:', eventBroadcaster.getConnectionCount());
+
+      // Send initial connection confirmation
+      const initialMessage = `data: ${JSON.stringify({
+        type: 'CONNECTION_ESTABLISHED',
+        data: { timestamp: Date.now() }
+      })}\n\n`;
+      
+      controller.enqueue(encoder.encode(initialMessage));
+
+      // Store controller reference for cleanup
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      (controller as any)._cleanup = () => {
+        console.log('🔌 SSE connection cleanup');
+        eventBroadcaster.removeConnection(controller);
+      };
+    },
+    
+    cancel(controller) {
+      // Clean up when client disconnects
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      if ((controller as any)._cleanup) {
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        (controller as any)._cleanup();
+      }
+    }
+  });
+
+  return new Response(stream, {
+    headers: {
+      'Content-Type': 'text/event-stream',
+      'Cache-Control': 'no-cache, no-transform',
+      'Connection': 'keep-alive',
+      'Access-Control-Allow-Origin': '*',
+      'Access-Control-Allow-Headers': 'Cache-Control',
+    },
+  });
+}