Add page-marker grouping and party-aware naming

Consecutive captures whose printed PAGE X OF Y markers advance under the same total are grouped into one multi-page PDF, with duplicate pages keeping the better read. Naming gains doc-title/party components and a scan-date fallback so nothing lands in UNSORTED. Vision LLM default switches to minicpm-v (faster, fewer false blanks on dense mono pages).

tests/test_naming.py

@@ -28,24 +28,45 @@ def test_build_name_full_metadata():
 def test_build_name_date_only():
     dt = datetime(2026, 1, 1, 12, 0, 0)
     result = build_name("2023-03-14", None, dt)
-    assert result.stem == "2023-03-14_UNSORTED"
+    assert result.stem == "2023-03-14_document"
     assert result.source == "ocr"
 
 
-def test_build_name_vendor_only():
+def test_build_name_vendor_only_uses_scan_date():
     dt = datetime(2026, 1, 1, 12, 0, 0)
     result = build_name(None, "METRO", dt)
-    assert result.stem == "UNSORTED_metro_20260101_120000"
-    assert result.source == "ocr"
+    assert result.stem == "2026-01-01_metro"
+    assert result.source == "scan_date"
 
 
 def test_build_name_nothing_found():
     dt = datetime(2026, 1, 1, 12, 0, 0)
     result = build_name(None, None, dt)
-    assert result.stem == "UNSORTED_20260101_120000"
+    assert result.stem == "2026-01-01_scan"
     assert result.source == "none"
 
 
+def test_build_name_appends_doc_title():
+    dt = datetime(2026, 1, 1, 12, 0, 0)
+    result = build_name("2025-01-31", "TD Canada Trust", dt, doc_title="transaction_history")
+    assert result.stem == "2025-01-31_td_canada_trust_transaction_history"
+
+
+def test_build_name_appends_party_shortname():
+    dt = datetime(2026, 1, 1, 12, 0, 0)
+    result = build_name(
+        "2025-01-31", "TD Canada Trust", dt,
+        doc_title="transaction_history", party="LEVIT I",
+    )
+    assert result.stem == "2025-01-31_td_canada_trust_transaction_history_levit_i"
+
+
+def test_build_name_doc_title_not_duplicated_when_vendor_says_same():
+    dt = datetime(2026, 1, 1, 12, 0, 0)
+    result = build_name("2025-01-31", "Transaction History", dt, doc_title="transaction_history")
+    assert result.stem == "2025-01-31_transaction_history"
+
+
 def test_build_name_with_time_disambiguates_same_day_visits():
     dt = datetime(2026, 1, 1, 12, 0, 0)
     morning = build_name("2023-03-20", "WALMART", dt, time="09:05")
@@ -64,7 +85,7 @@ def test_build_name_invalid_time_ignored():
 def test_build_name_time_without_date_ignored():
     dt = datetime(2026, 1, 1, 12, 0, 0)
     result = build_name(None, "METRO", dt, time="09:05")
-    assert result.stem == "UNSORTED_metro_20260101_120000"
+    assert result.stem == "2026-01-01_metro"
 
 
 def test_build_name_tax_form_with_year_and_org():