chore: import existing codebase as baseline

scripts/reconcile_reference.py

@@ -0,0 +1,53 @@
+import json
+import os
+from decimal import Decimal
+from time import perf_counter
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "server.settings")
+import django
+
+django.setup()
+from django.contrib.auth.models import User
+from django.db import connection
+
+from finance.analysis import analyze, default_preferences
+from finance.models import Dataset
+
+if connection.vendor != "postgresql":
+    raise SystemExit("Reconciliation requires PostgreSQL exact NUMERIC aggregation")
+ds = Dataset.objects.get(sha256="98ef41e898c24f0929a9da6ec185b7331f69f0478b52056cbc7834e1ef5877ec")
+member = User.objects.get(username="admin").membership
+start = perf_counter()
+result = analyze(
+    ds,
+    member,
+    {
+        "start": "2026-08",
+        "end": "2026-08",
+        "comparison": "yoy",
+        "group": "department",
+        "metric": "revenue",
+        "filters": {},
+    },
+    default_preferences(ds),
+)
+assert ds.row_count == 332830
+assert result["summary"]["revenue"]["current"] == Decimal("152419115.348455502666069")
+assert result["summary"]["revenue"]["baseline"] == Decimal("225550255.4187610638720")
+assert result["summary"]["gross"]["current"] == Decimal("17868580.85186759073400145")
+assert result["summary"]["gross"]["baseline"] == Decimal("24790335.405853982758000")
+assert result["summary"]["customers"]["current"] == 38361
+assert result["summary"]["customers"]["baseline"] == 33147
+assert result["summary"]["roi"]["current"] is None
+assert sum(r["values"]["revenue"]["delta"] for r in result["rows"]) == result["summary"]["revenue"]["delta"]
+report = {
+    "status": "passed",
+    "source": ds.name,
+    "sha256": ds.sha256,
+    "rows": ds.row_count,
+    "query_seconds": round(perf_counter() - start, 3),
+    "summary": result["summary"],
+    "quality": ds.quality,
+    "groups": len(result["rows"]),
+}
+print(json.dumps(report, ensure_ascii=False, default=str, indent=2))