feat: strategy builder

frontend/src/pages/StrategyBuilder.tsx

@@ -8,15 +8,13 @@ import {
   useOptionChainSlice, usePriceStrategy, useOptimizeStrategy, useSuggestedProfile,
   useScenarios, useSaveScenario, useDeleteScenario,
   useSavedStrategies, useSaveStrategyRecord, useDeleteSavedStrategy,
-  useWatchlistTickers, useSaxoCatalog, useIvForTrade,
+  useSaxoSymbols, useIvForTrade,
   type StrategyLeg, type StrategyScenario, type PriceCombo, type StrategyCandidate,
   type OptimizeConstraints, type SavedScenario,
   type GreekProfile, type GreekTarget, type GreekState, type GreekTolerance, DEFAULT_GREEK_PROFILE,
 } from '../hooks/useApi'
 import { fmtPrice, fmtAsOf } from '../lib/format'
 
-type WatchlistEntry = { ticker: string; is_active: number | boolean; added_by: string }
-
 const STRIKE_PCTS = [80, 85, 90, 95, 100, 105, 110, 115, 120]
 const DELTA_NEUTRAL_THRESHOLD = 0.15
 
@@ -758,12 +756,11 @@ export default function StrategyBuilder() {
   const [showAdvancedGreeks, setShowAdvancedGreeks] = useState(false)
   const [activeTemplate, setActiveTemplate] = useState<string | null>(null)
 
-  const { data: watchlistData } = useWatchlistTickers()
-  const { data: saxoCatalog } = useSaxoCatalog(undefined, undefined, { enabled: true, limit: 500 })
-  const watchlistTickers = Array.from(new Set([
-    ...((watchlistData?.tickers ?? []) as WatchlistEntry[]).filter(t => t.is_active).map(t => t.ticker),
-    ...(saxoCatalog ?? []).map(c => c.symbol),
-  ])).sort()
+  // Only propose symbols that actually have accumulated Saxo History — a catalog/watchlist
+  // entry with no snapshot rows yet just leads to the same "no history" dead end this list
+  // is meant to prevent (see the commitSymbol comment above).
+  const { data: saxoSymbols } = useSaxoSymbols()
+  const watchlistTickers = (saxoSymbols ?? []).map(s => s.symbol).sort()
 
   const { data: chain, isLoading: chainLoading, isError: chainError, error: chainErrorObj, refetch: refetchChain, isFetching } =
     useOptionChainSlice(debouncedSymbol, horizonDays, 3, true, scenario.dte_min, scenario.dte_max)