Fix summarizer worker infinite loop and map AI trigger errors to safe HTTP responses.

Paginate un-summarized tenders and mark rows missing notice/folder IDs as handled so the worker cannot spin forever. Return 400/404 for validation and not-found cases on AI summarize/analyze triggers instead of leaking internal errors as 500.

cmd/worker/workers/summarizer.go

@@ -54,8 +54,9 @@ func (w *DocumentSummarizationWorker) Run() {
 	}
 
 	limit := 5
+	skip := 0
 	for {
-		tenders, totalCount, err := w.TenderRepo.GetUnSummarizedTenders(context.Background(), limit, 0)
+		tenders, totalCount, err := w.TenderRepo.GetUnSummarizedTenders(context.Background(), limit, skip)
 		if err != nil {
 			w.Logger.Error("Failed to get un-summarized tenders", map[string]interface{}{
 				"error": err.Error(),
@@ -66,6 +67,7 @@ func (w *DocumentSummarizationWorker) Run() {
 		w.Logger.Info("Found tenders for document summarization", map[string]interface{}{
 			"count":       len(tenders),
 			"total_count": totalCount,
+			"skip":        skip,
 		})
 
 		if len(tenders) == 0 {
@@ -80,6 +82,11 @@ func (w *DocumentSummarizationWorker) Run() {
 			})
 			w.summarizeTender(t)
 		}
+
+		skip += len(tenders)
+		if int64(skip) >= totalCount {
+			break
+		}
 	}
 
 	w.Logger.Info("Document summarization worker completed", map[string]interface{}{})
@@ -90,12 +97,14 @@ func (w *DocumentSummarizationWorker) summarizeTender(t *tender.Tender) {
 		w.Logger.Warn("Skipping tender summarization: missing notice_publication_id", map[string]interface{}{
 			"tender_id": t.ID.Hex(),
 		})
+		w.markTenderSummarized(t)
 		return
 	}
 	if strings.TrimSpace(t.ContractFolderID) == "" {
 		w.Logger.Warn("Skipping tender summarization: missing contract_folder_id", map[string]interface{}{
 			"tender_id": t.ID.Hex(),
 		})
+		w.markTenderSummarized(t)
 		return
 	}