Add rcon-first elo mmr foundation

backend/app/historical_ingestion.py

@@ -13,6 +13,7 @@ from .config import (
     get_historical_refresh_overlap_hours,
 )
 from .data_sources import HistoricalDataSource, resolve_historical_ingestion_data_source
+from .elo_mmr_engine import rebuild_elo_mmr_models
 from .historical_snapshots import generate_and_persist_historical_snapshots
 from .historical_storage import (
     finalize_backfill_progress,
@@ -187,12 +188,17 @@ def _run_ingestion(
             active_runs.pop(str(server["slug"]), None)
         if rebuild_snapshots:
             snapshot_result = generate_and_persist_historical_snapshots(server_key=server_slug)
+            elo_mmr_result = rebuild_elo_mmr_models()
         else:
             snapshot_result = {
                 "status": "skipped",
                 "reason": "snapshot-rebuild-disabled",
                 "generation_policy": "handled-by-caller",
             }
+            elo_mmr_result = {
+                "status": "skipped",
+                "reason": "snapshot-rebuild-disabled",
+            }
     except Exception as exc:
         for active_server_slug, run_id in active_runs.items():
             finalize_ingestion_run(
@@ -227,6 +233,7 @@ def _run_ingestion(
         "servers": processed_servers,
         "coverage": list_historical_coverage_report(server_slug=server_slug),
         "snapshot_result": snapshot_result,
+        "elo_mmr_result": elo_mmr_result,
         "totals": {
             "pages_processed": stats.pages_processed,
             "matches_seen": stats.matches_seen,