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admin UI but consumed nowhere (the touch-probability model superseded it).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>

app/routers/admin.py

@@ -274,6 +274,16 @@ async def cleanup_data(
     return APIEnvelope(status="success", data=counts)
 
 
+@router.post("/admin/track-record/reset", response_model=APIEnvelope)
+async def reset_track_record(
+    _admin: User = Depends(require_admin),
+    db: AsyncSession = Depends(get_db),
+):
+    """Wipe the track record: delete all trade setups so stats start fresh."""
+    counts = await admin_service.reset_trade_setups(db)
+    return APIEnvelope(status="success", data=counts)
+
+
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