add track-record reset; drop dead distance_penalty_factor knob

Track Record: new "Reset" action (POST /admin/track-record/reset) deletes all
trade setups so stats start fresh after material scoring/setup changes — live
setups regenerate on the next scan. Guarded by a confirm dialog.

Recommendation config: remove distance_penalty_factor, which was exposed in the
admin UI but consumed nowhere (the touch-probability model superseded it). A
knob that silently does nothing is worse than no knob. Remaining defaults are
left as-is — they're reasonable, and the honest way to tune them is backtesting
against accumulated outcomes, not invented "researched" numbers.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/components/signals/TrackRecordPanel.tsx

@@ -3,7 +3,7 @@ import { useMutation, useQueryClient } from '@tanstack/react-query';
 import { useActivation } from '../../hooks/useActivation';
 import { activationSummary } from '../../lib/qualification';
 import { usePerformance } from '../../hooks/usePerformance';
-import { triggerJob } from '../../api/admin';
+import { triggerJob, resetTrackRecord } from '../../api/admin';
 import { Button } from '../ui/Button';
 import { Callout } from '../ui/Callout';
 import { Disclosure } from '../ui/Disclosure';
@@ -112,6 +112,29 @@ export function TrackRecordPanel() {
     },
   });
 
+  const resetMutation = useMutation({
+    mutationFn: () => resetTrackRecord(),
+    onSuccess: (data) => {
+      toast.addToast('success', `Track record reset — ${data.trade_setups} setups cleared. Run the scanner to rebuild.`);
+      queryClient.invalidateQueries({ queryKey: ['performance'] });
+      queryClient.invalidateQueries({ queryKey: ['trades'] });
+    },
+    onError: () => {
+      toast.addToast('error', 'Failed to reset track record');
+    },
+  });
+
+  const onReset = () => {
+    if (
+      window.confirm(
+        'Reset the track record? This permanently deletes ALL trade setups and their outcomes. ' +
+          'Live setups will regenerate on the next R:R scan. This cannot be undone.',
+      )
+    ) {
+      resetMutation.mutate();
+    }
+  };
+
   return (
     <div className="space-y-6">
       <div className="glass-sm flex flex-wrap items-center justify-between gap-3 px-4 py-3">
@@ -145,9 +168,14 @@ export function TrackRecordPanel() {
             evaluator runs nightly after OHLCV collection.
           </p>
         </Disclosure>
-        <Button onClick={() => evaluateMutation.mutate()} loading={evaluateMutation.isPending} className="shrink-0">
-          {evaluateMutation.isPending ? 'Evaluating…' : 'Evaluate Now'}
-        </Button>
+        <div className="flex shrink-0 items-center gap-2">
+          <Button onClick={() => evaluateMutation.mutate()} loading={evaluateMutation.isPending}>
+            {evaluateMutation.isPending ? 'Evaluating…' : 'Evaluate Now'}
+          </Button>
+          <Button variant="danger" onClick={onReset} loading={resetMutation.isPending}>
+            {resetMutation.isPending ? 'Resetting…' : 'Reset'}
+          </Button>
+        </div>
       </div>
 
       {isLoading && (