Integrate unused indicators into technical scoring; fix indicator dropdown

- Technical dimension now uses all directional indicators:
  0.30*ADX + 0.20*EMA + 0.20*RSI + 0.15*EMA_Cross (bullish=80 /
  neutral=50 / bearish=20) + 0.10*Volume_Profile (POC proximity)
  + 0.05*Pivot_Points (structure confluence); weights re-normalize
  when data is insufficient, as before
- ATR stays out of scoring (volatility input for scanner stops,
  not a directional signal)
- IndicatorSelector uses the shared Select so the option list is
  dark instead of the native white popup
- Update technical scoring tests for the six-component breakdown

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/components/ticker/IndicatorSelector.tsx

@@ -1,6 +1,7 @@
 import { useState } from 'react';
 import { useQuery } from '@tanstack/react-query';
 import { getIndicator, getEMACross } from '../../api/indicators';
+import { Select } from '../ui/Field';
 import type { IndicatorResult, EMACrossResult } from '../../lib/types';
 
 const INDICATOR_TYPES = ['ADX', 'EMA', 'RSI', 'ATR', 'volume_profile', 'pivot_points'] as const;
@@ -85,16 +86,16 @@ export function IndicatorSelector({ symbol }: IndicatorSelectorProps) {
       <h3 className="mb-3 text-xs font-medium uppercase tracking-widest text-gray-500">Indicators</h3>
 
       <div className="mb-4">
-        <select
+        <Select
           value={selectedType}
           onChange={(e) => setSelectedType(e.target.value)}
-          className="w-full input-glass px-3 py-2.5 text-sm"
+          className="w-full !py-2.5"
         >
           <option value="">Select indicator…</option>
           {INDICATOR_TYPES.map((type) => (
             <option key={type} value={type}>{type}</option>
           ))}
-        </select>
+        </Select>
       </div>
 
       {selectedType && indicatorQuery.isLoading && (