Add Phase 20 stored bank reuse and richer reconciliation

app/modules/bank_statement_analyzer/client_context.py

@@ -365,12 +365,37 @@ def archive_analysis_to_engagement(
         return {"status": "not_requested", "documents": []}
 
     archived = []
+
+    reused = []
+    try:
+        reused = json.loads(getattr(job, "stored_source_versions_json", None) or "[]")
+    except Exception:
+        reused = []
+    reused_by_copied_name = {
+        _text(row.get("copied_filename")): row
+        for row in reused
+        if isinstance(row, dict) and _text(row.get("copied_filename"))
+    }
+
     meta_by_source = {
         Path(_text(getattr(meta, "source_file", ""))).name: meta
         for meta in metas
     }
 
     for source in source_paths:
+        reused_row = reused_by_copied_name.get(source.name)
+        if reused_row:
+            archived.append(
+                {
+                    "document_id": int(reused_row.get("document_id") or 0),
+                    "version_id": int(reused_row.get("version_id") or 0),
+                    "filename": reused_row.get("original_filename") or source.name,
+                    "type": "BANK_STATEMENT",
+                    "reused_existing_document": True,
+                }
+            )
+            continue
+
         upload = _upload_proxy(source, "application/pdf")
         try:
             meta = meta_by_source.get(source.name)