chore: clean up repo for public release

- Remove BMAD framework, IDE configs, dev screenshots, test files,
  internal docs, and backup files
- Rename keep-notes/ to memento-note/
- Update all references from keep-notes to memento-note
- Add Apache 2.0 license with Commons Clause (non-commercial restriction)
- Add clean .gitignore and .env.docker.example

memento-note/app/api/debug/test-chat/route.ts

@@ -0,0 +1,29 @@
+import { NextResponse } from 'next/server';
+import { chatService } from '@/lib/ai/services/chat.service';
+
+export async function POST(req: Request) {
+  try {
+    const body = await req.json();
+    console.log("TEST ROUTE INCOMING BODY:", body);
+    
+    // Simulate what the server action does
+    const result = await chatService.chat(body.message, body.conversationId, body.notebookId);
+    
+    return NextResponse.json({ success: true, result });
+  } catch (err: any) {
+    console.error("====== TEST ROUTE CHAT ERROR ======");
+    console.error("NAME:", err.name);
+    console.error("MSG:", err.message);
+    if (err.cause) console.error("CAUSE:", JSON.stringify(err.cause, null, 2));
+    if (err.data) console.error("DATA:", JSON.stringify(err.data, null, 2));
+    if (err.stack) console.error("STACK:", err.stack);
+    console.error("===================================");
+    return NextResponse.json({ 
+      success: false, 
+      error: err.message,
+      name: err.name,
+      cause: err.cause,
+      data: err.data
+    }, { status: 500 });
+  }
+}