Add matched training signals, daily recovery and performance analysis

app/stats_insights.py

@@ -56,7 +56,7 @@ def enrich(chart, q, keys, tokens, groups, history, included, start, measure, ca
             continue
         # Comparing totals/counts to a distribution of individual runs is meaningless.
         supported = (
-            spec["function"] not in {"sum", "count", "stddev"}
+            spec["function"] not in {"sum", "count", "stddev", "latest"}
             if spec
             else field not in {"count", "distance", "duration", "elevation", "calories"}
         )
@@ -111,7 +111,7 @@ def enrich(chart, q, keys, tokens, groups, history, included, start, measure, ca
                 "label": series["label"],
                 "unit": series["unit"],
                 "baseline": center,
-                "source": q["source"],
+                "source": "runs" if q["reduce"] else q["source"],
                 "low": low,
                 "high": high,
                 "count": len(numbers),