Fix consistency bug, rename Random to Auto, add stop-after-all, direction pills, copy-trade

Bug fixes:
- Fix computeDailyTarget when consistency is 0% or 100%: treat as no constraint,
  letting min-day reservation or full remaining profit drive the target
- Rename 'Random' to 'Auto' across entire codebase (types, API, UI, scheduler)

Features:
- Add "Stop after all eligible" checkbox: auto-stops scheduler when all
  configured accounts are dead, inactive, already traded, or challenge complete
- Show position direction in status pill: "Long" (green) / "Short" (red)
  instead of generic "In Trade" (blue)
- Add "Copy to Max" button: copies current trade direction to remaining
  eligible accounts up to max_concurrent_accounts limit

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/api/state/route.ts

@@ -66,7 +66,9 @@ export async function GET() {
                     amount: cash.amount,
                     realizedPnL: cash.realizedPnL,
                     daysTraded,
-                    hasPosition: !!client.positions[acc.id],
+                    positionDirection: client.positions[acc.id]
+                        ? (client.positions[acc.id].netPos > 0 ? 'long' as const : 'short' as const)
+                        : null,
                     autoLiqThreshold,
                     totalProfit,
                     targetHit,