fix: stamp filter_batch_id on submitted jobs; exclude already-submitted/filtered from resubmit

- Submit phase now excludes jobs with filter_batch_id set (already in a batch)
- After submitting, stamps each job with filter_batch_id = batchId
- Filtered jobs already excluded by status='filtered'
- Prevents duplicate submissions when batch errors cause state to clear without scores

job_filter.mjs

@@ -181,8 +181,8 @@ async function collect(state, settings) {
 async function submit(settings, searchConfig, candidateProfile) {
   const apiKey = process.env.ANTHROPIC_API_KEY;
 
-  // Get all new jobs that haven't been scored yet
-  const jobs = getJobsByStatus('new').filter(j => j.filter_score == null);
+  // Get all new jobs that haven't been scored and aren't already in a pending batch
+  const jobs = getJobsByStatus('new').filter(j => j.filter_score == null && !j.filter_batch_id);
 
   if (jobs.length === 0) {
     console.log('✅ Nothing to filter — all new jobs already scored.');
@@ -214,6 +214,15 @@ async function submit(settings, searchConfig, candidateProfile) {
 
   const { batchId, idMap } = await submitBatch(filterable, jobProfilesByTrack, searchConfig, candidateProfile, model, apiKey);
 
+  // Stamp each job with the batch ID so they're excluded from future submissions
+  const { saveQueue } = await import('./lib/queue.mjs');
+  const allJobs = loadQueue();
+  const filteredIds = new Set(filterable.map(j => j.id));
+  for (const job of allJobs) {
+    if (filteredIds.has(job.id)) job.filter_batch_id = batchId;
+  }
+  saveQueue(allJobs);
+
   const submittedAt = new Date().toISOString();
   writeState({
     batch_id: batchId,