stream: rename the dequeue id local to avoid shadowing

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

stream/ingest_proxy.liq

@@ -71,13 +71,13 @@ ingest_dequeue_url = "http://ingest:8080/dequeue"
 harbor.http.register(
   port=8000, method="POST", "/dequeue",
   fun(req, resp) -> begin
-    id = list.assoc(default="", "id", req.query)
-    if id == "" then
+    entry_id = list.assoc(default="", "id", req.query)
+    if entry_id == "" then
       resp.status_code(400)
       resp.data("missing id")
     else
       body = http.post(
-        data="", timeout=10.0, "#{ingest_dequeue_url}?id=#{url.encode(id)}"
+        data="", timeout=10.0, "#{ingest_dequeue_url}?id=#{url.encode(entry_id)}"
       )
       resp.status_code(body.status_code)
       resp.content_type("application/json; charset=utf-8")