Legs: cheapest symbol that reaches the target hold, last stands, a reserve that grows with size

- A batch sizes its leg on every mapped candidate, each at the leverage
  the broker states for it, and trades the cheapest (spread, commissions,
  expected swap) that reaches the target hold — else the quickest. The
  dashboard ranks the same way from a half-hourly candidate survey.
- Last stand: when a daily-loss stop-out would leave the account within
  15% of that loss above its max-drawdown floor (the account type's static
  max loss, or the broker's liquidation floor), the leg carries no
  daily-loss stop and is sized against the firm's own breach.
- The daily-loss reserve is 10% of the limit or 0.1% of the position,
  whichever is more, since a stop's slippage grows with the position.
- The account type's max notional is gone: the broker's margin rates cap
  each symbol. planLegSize holds the one sizing rule fireLeg, the pick and
  the dashboard share.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/page.tsx

@@ -387,8 +387,11 @@ function AccountRow({ account, firm, hideDead, privacy, onAssigned }: {
                             {account.nextStop !== null && (
                                 <span className="text-amber-600" title="The next trade's stop — dollars of price movement it may lose before booking the day (fees come on top; the daily-loss stop already reserves for them)"> · stop ${fmt(account.nextStop)}</span>
                             )}
+                            {account.lastStand && (
+                                <span className="text-red-600" title="Last stand: a daily-loss stop-out would leave this account within 15% of that loss of its max-drawdown floor — nothing left to trade on — so the next leg carries no daily-loss stop and runs to its take-profit or the firm's breach"> · no stop (last stand)</span>
+                            )}
                             {typeof account.dllRoom === 'number' && (
-                                <span className="text-slate-500" title="Hard daily loss limit: what the firm's day may still lose before a breach. 10% of the limit is never spent."> · DLL room ${fmt(account.dllRoom)}</span>
+                                <span className="text-slate-500" title="Hard daily loss limit: what the firm's day may still lose before a breach. A reserve — 10% of the limit, or 0.1% of the position if larger — is never spent."> · DLL room ${fmt(account.dllRoom)}</span>
                             )}
                             {account.holdEstimate && (
                                 <span
@@ -397,7 +400,8 @@ function AccountRow({ account, firm, hideDead, privacy, onAssigned }: {
                                         + (account.holdEstimate.leverage !== null ? ` (${account.holdEstimate.leverage}:1 max)` : '')
                                         + ` at a measured volatility of ${(account.holdEstimate.volatilityPerDay * 100).toFixed(2)}%/day over the past week`
                                         + (account.holdEstimate.winProbability !== null ? `, wins ~${Math.round(account.holdEstimate.winProbability * 100)}% of the time` : '')
-                                        + (account.holdEstimate.swapReserve > 0 ? `; its take-profit carries ~$${fmt(account.holdEstimate.swapReserve)} of expected swap` : '')}
+                                        + (account.holdEstimate.swapReserve > 0 ? `; its take-profit carries ~$${fmt(account.holdEstimate.swapReserve)} of expected swap` : '')
+                                        + `. Expected cost ~$${fmt(account.holdEstimate.cost)} (spread, commissions, swap) — the cheapest candidate that reaches the target hold`}
                                 >
                                     {' · hold ~'}{account.holdEstimate.hours < 48 ? `${Math.round(account.holdEstimate.hours)}h` : `${(account.holdEstimate.hours / 24).toFixed(1)}d`}
                                 </span>