Enhance visit filtering and batching for remote data submission

extension/service-worker.js

@@ -24,16 +24,38 @@ async function archiveLocally(visits) {
 async function sendToCollector(visits) {
   // Empty settings deliberately disable sending; the local SQLite archive still works.
   if (!CONFIG.collectorUrl || !CONFIG.apiToken) return true;
+  const remoteVisits = visits
+    .filter((visit) => {
+      if (typeof visit?.url !== "string") return false;
+      try {
+        const protocol = new URL(visit.url).protocol;
+        return protocol === "http:" || protocol === "https:";
+      } catch {
+        return false;
+      }
+    })
+    .map((visit) => ({
+      ...visit,
+      title: String(visit.title ?? "").slice(0, 1000)
+    }));
   try {
-    const response = await fetch(CONFIG.collectorUrl, {
-      method: "POST",
-      headers: {
-        "Content-Type": "application/json",
-        "Authorization": `Bearer ${CONFIG.apiToken}`
-      },
-      body: JSON.stringify({ device_id: CONFIG.deviceId, visits })
-    });
-    if (!response.ok) throw new Error(`HTTP ${response.status}`);
+    for (let offset = 0; offset < remoteVisits.length; offset += 100) {
+      const response = await fetch(CONFIG.collectorUrl, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          "Authorization": `Bearer ${CONFIG.apiToken}`
+        },
+        body: JSON.stringify({
+          device_id: CONFIG.deviceId,
+          visits: remoteVisits.slice(offset, offset + 100)
+        })
+      });
+      if (!response.ok) {
+        const detail = (await response.text()).trim().slice(0, 1000);
+        throw new Error(`HTTP ${response.status}${detail ? `: ${detail}` : ""}`);
+      }
+    }
     return true;
   } catch (error) {
     console.warn("Collector unavailable", error.message);