Initial import of LogDarioSeq baseline

Establishes version control for the personal Logseq DB fork before
starting the server-client architecture migration and domain features
described in docs/agent-guide and the approved implementation plan.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

deps/db-sync/worker/scripts/ws_test.js

@@ -0,0 +1,32 @@
+const baseUrl = process.env.BASE_URL || "http://127.0.0.1:8787";
+const graphId = process.env.GRAPH_ID || "dev-graph";
+
+const wsUrl = baseUrl.replace(/^http/, "ws") + `/sync/${graphId}`;
+
+const WebSocketCtor = globalThis.WebSocket;
+if (!WebSocketCtor) {
+  console.error("WebSocket not available. Use node>=20 or provide a WebSocket polyfill.");
+  process.exit(1);
+}
+
+const ws = new WebSocketCtor(wsUrl);
+let pending = 0;
+
+ws.addEventListener("open", () => {
+  ws.send(JSON.stringify({ type: "hello", client: "ws-test" }));
+  ws.send(JSON.stringify({ type: "ping" }));
+  ws.send(JSON.stringify({ type: "pull", since: 0 }));
+  pending = 3;
+});
+
+ws.addEventListener("message", (event) => {
+  console.log(String(event.data));
+  pending -= 1;
+  if (pending <= 0) {
+    ws.close();
+  }
+});
+
+ws.addEventListener("error", (event) => {
+  console.error("ws error", event);
+});