fix: recalibrate FIP path labels to live equity scale

Replace inert ±0.25 bands with ~p25/p75 cutoffs from the prod snapshot
(−0.08 / 0.00). Document zero-return dilution and left-skewed distribution.

frontend/src/components/ticker/IndicatorSelector.tsx

@@ -192,6 +192,9 @@ function interpretation(
 
     case 'fip_id': {
       // Display context only — not a production gate input.
+      // Prefer backend path_label (calibrated ~p25/p75 on live equities).
+      // Fallback thresholds match indicator_service FIP_PATH_* constants
+      // (not ±0.25 — that band almost never fires on real names).
       const label = typeof v.path_label === 'string' ? v.path_label : null;
       const path = typeof v.path === 'string' ? v.path : null;
       if (label) {
@@ -201,8 +204,8 @@ function interpretation(
       }
       const fip = num('fip_id');
       if (fip == null) return null;
-      if (fip <= -0.25) return { text: 'smooth grind (continuous)', tone: 'text-emerald-300' };
-      if (fip >= 0.25) return { text: 'jumpy path (discrete)', tone: 'text-amber-300' };
+      if (fip <= -0.08) return { text: 'smooth grind (continuous)', tone: 'text-emerald-300' };
+      if (fip >= 0) return { text: 'jumpy path (discrete)', tone: 'text-amber-300' };
       return { text: 'mixed path', tone: 'text-gray-300' };
     }