chore(jarca-ledger): finalize approved batch docs, dashboard, and CI smoke updates

tests/test_categorization.py

@@ -49,3 +49,35 @@ def test_apply_categorization_rules_applies_all_matches_not_just_preview_sample(
     assert applied["applied_count"] == 150
     uncategorized = service.list_uncategorized_transactions(limit=200, db_path=db_path)
     assert uncategorized["count"] == 0
+
+def test_single_category_rule_preview_and_apply_only_uncategorized(tmp_path):
+    db_path = str(tmp_path / "ledger.sqlite3")
+    seeded = service.seed_default_category_rules(db_path=db_path)
+    assert seeded["success"] is True
+    rules = service.list_category_rules(db_path=db_path)["rules"]
+    mart_rule = next(r for r in rules if r["pattern"] == "이마트")
+
+    uncategorized = service.create_ledger_transaction(
+        "2026-06-01", "expense", 10_000, merchant="이마트에브리데이", raw_summary="체크카드", db_path=db_path
+    )["transaction"]
+    categorized = service.create_ledger_transaction(
+        "2026-06-02", "expense", 20_000, category="생활", subcategory="생필품", merchant="이마트24", raw_summary="체크카드", db_path=db_path
+    )["transaction"]
+    service.create_ledger_transaction(
+        "2026-06-03", "expense", 30_000, merchant="알수없음", raw_summary="체크카드", db_path=db_path
+    )
+
+    preview = service.preview_category_rule_matches(mart_rule["id"], db_path=db_path)
+    assert preview["success"] is True
+    assert preview["matched_count"] == 2
+    assert preview["uncategorized_matched_count"] == 1
+    assert len(preview["sample"]) == 2
+
+    applied = service.apply_category_rule(mart_rule["id"], db_path=db_path)
+    assert applied["success"] is True
+    assert applied["applied_count"] == 1
+
+    all_tx = service.list_ledger_transactions(limit=10, db_path=db_path)["transactions"]
+    by_id = {tx["id"]: tx for tx in all_tx}
+    assert by_id[uncategorized["id"]]["category"] == "식비"
+    assert by_id[categorized["id"]]["category"] == "생활"