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admin UI but consumed nowhere (the touch-probability model superseded it).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/admin/RecommendationSettings.tsx

@@ -9,7 +9,6 @@ const DEFAULTS: RecommendationConfig = {
   confidence_diff_threshold: 20,
   signal_alignment_weight: 0.15,
   sr_strength_weight: 0.2,
-  distance_penalty_factor: 0.1,
   momentum_technical_divergence_threshold: 30,
   fundamental_technical_divergence_threshold: 40,
 };
@@ -82,7 +81,6 @@ export function RecommendationSettings() {
 
         <NumberInput label="Signal Alignment Weight" value={form.signal_alignment_weight} min={0} max={1} step={0.01} onChange={(v) => setField('signal_alignment_weight', v)} />
         <NumberInput label="S/R Strength Weight" value={form.sr_strength_weight} min={0} max={1} step={0.01} onChange={(v) => setField('sr_strength_weight', v)} />
-        <NumberInput label="Distance Penalty Factor" value={form.distance_penalty_factor} min={0} max={1} step={0.01} onChange={(v) => setField('distance_penalty_factor', v)} />
 
         <NumberInput label="Momentum-Technical Divergence Threshold" value={form.momentum_technical_divergence_threshold} min={0} max={100} onChange={(v) => setField('momentum_technical_divergence_threshold', v)} />
         <NumberInput label="Fundamental-Technical Divergence Threshold" value={form.fundamental_technical_divergence_threshold} min={0} max={100} onChange={(v) => setField('fundamental_technical_divergence_threshold', v)} />