Add optimistic writeback flow with kanban drag-drop transitions

src/app/api/beads/read/route.ts

@@ -0,0 +1,24 @@
+import { NextResponse } from 'next/server';
+
+import { readIssuesFromDisk } from '../../../../lib/read-issues';
+
+export async function GET(request: Request): Promise<Response> {
+  const url = new URL(request.url);
+  const projectRoot = url.searchParams.get('projectRoot') ?? process.cwd();
+
+  try {
+    const issues = await readIssuesFromDisk({ projectRoot });
+    return NextResponse.json({ ok: true, issues });
+  } catch (error) {
+    return NextResponse.json(
+      {
+        ok: false,
+        error: {
+          classification: 'unknown',
+          message: error instanceof Error ? error.message : 'Failed to read issues.',
+        },
+      },
+      { status: 500 },
+    );
+  }
+}