diff --git a/main.js b/main.js
index 4f7279d..867cfc9 100644
--- a/main.js
+++ b/main.js
@@ -32,10 +32,23 @@ const _sessionAccountOverrides = new Map(); // hoster -> account object
 // grepping account-rotation.log. Ring buffer per job keeps memory bounded.
 const _jobLogCollector = new Map(); // jobId -> Array<entry>
 const _MAX_LOG_ENTRIES_PER_JOB = 200;
+// Cap the total number of jobs we keep history for — without this the Map
+// keeps growing across batch-done boundaries (only start-upload clears it).
+// 1000 jobs × 200 entries × ~100 bytes ≈ 20 MB worst case, bounded.
+const _MAX_TRACKED_JOBS = 1000;
 function _appendJobLog(jobId, entry) {
   if (!jobId) return;
   let arr = _jobLogCollector.get(jobId);
-  if (!arr) { arr = []; _jobLogCollector.set(jobId, arr); }
+  if (!arr) {
+    arr = [];
+    _jobLogCollector.set(jobId, arr);
+    // Evict oldest tracked job (insertion order) once we're past the cap.
+    // Map iteration is insertion-ordered in spec, so .keys().next() is FIFO.
+    if (_jobLogCollector.size > _MAX_TRACKED_JOBS) {
+      const oldestId = _jobLogCollector.keys().next().value;
+      if (oldestId !== undefined) _jobLogCollector.delete(oldestId);
+    }
+  }
   if (arr.length >= _MAX_LOG_ENTRIES_PER_JOB) arr.shift();
   arr.push(entry);
 }
diff --git a/tasks/todo.md b/tasks/todo.md
index cdce0e5..0a2e728 100644
--- a/tasks/todo.md
+++ b/tasks/todo.md
@@ -4,12 +4,10 @@
 - ✅ 3.3.0 — Performance-Fixes (queue-cap, sort-throttle, history-delegation, recent-cap) + Log-Recovery
 - ✅ 3.3.1 — `removeFromQueueOnDone` coalesced via microtask (kein O(N²) mehr bei done-Bursts)
 - ✅ 3.3.2 — `fileuploader.log` Auto-Rotation bei 50 MB (max 3 Backups: .1 .2 .3)
+- ✅ 3.3.3 — `_jobLogCollector` Cap auf 1000 tracked jobs (FIFO-eviction beim Überschreiten)
 
 ## Open items (priorisiert)
 
-### Stabilität
-- [ ] **`_jobLogCollector`** (main.js) — wird nur bei start-upload geleert, nicht bei batch-done. Bei vielen Batches ohne neuen start-upload wächst es. Cleanup bei batch-done für jobs die nicht mehr in queueJobs sind.
-
 ### Performance
 - [ ] **`applyQueueSelectionClasses`** (renderer/app.js:891) — `tbody.querySelectorAll` bei jedem Klick. Bei 5000-Jobs-Queue O(N) per click. Cache last rendered range.