Wallet audit: warn about at-risk balance before removing a mint (1.2.39)

Audited the wallet surface (real money: Cashu proofs, Lightning, NWC).
Most of it is solid — the Cashu singleton init with browser-CORS mint
probing/auto-heal, the send/receive token flows, the Lightning receive
path (double-tap guard + redeemed-quote listener cleanup + actionable
CORS errors), and the melt-based send all check out and match the zap
path.

One real money-loss gap: removing a mint calls
mintRepository.deleteMint(), which drops that mint's proofs from the
device — so removing a mint you still hold sats in strands those funds.
There are two remove-mint dialogs and they disagreed:

  • MintPrivacyManager already warned with the concrete at-risk balance.
  • CashuWallet's dialog showed only a generic static "make sure you've
    withdrawn funds" line — no balance, no escalation — so a user could
    delete a mint holding sats with effectively no warning.

Brought CashuWallet up to (slightly past) parity: when the mint being
removed has a non-zero balance it now shows a loud red warning with the
exact sats at risk and relabels the button "Remove anyway"; empty mints
keep the mild yellow note. Deletion is still allowed (a permanently
offline mint must be removable even with a stuck balance) — it's now an
informed choice, not a silent one.

Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "skate-spots",
   "private": true,
-  "version": "1.2.38",
+  "version": "1.2.39",
   "type": "module",
   "homepage": "https://skate-spots.com",
   "scripts": {

src/components/wallet/CashuWallet.tsx

@@ -663,12 +663,26 @@ export function CashuWallet() {
             </DialogDescription>
           </DialogHeader>
           <div className="space-y-4">
-            <Alert className="bg-yellow-950/30 border-yellow-500/30">
+            {mintToRemove && (balances[mintToRemove.url] || 0) > 0 ? (
-              <AlertCircle className="h-4 w-4 text-yellow-400" />
+              // Real balance at risk — removing deletes the local proofs and
-              <AlertDescription className="text-sm text-gray-300">
+              // strands these sats. Make the amount explicit and loud.
-                Make sure you have withdrawn all funds from this mint before removing it.
+              <Alert className="bg-red-950/40 border-red-500/50">
-              </AlertDescription>
+                <AlertCircle className="h-4 w-4 text-red-400" />
-            </Alert>
+                <AlertDescription className="text-sm text-gray-200">
+                  <span className="font-bold text-red-400">Warning:</span> This mint still holds{' '}
+                  <span className="font-bold">{(balances[mintToRemove.url] || 0).toLocaleString()} sats</span>.
+                  Removing it deletes those funds from this device — withdraw or send them first,
+                  or they'll be lost.
+                </AlertDescription>
+              </Alert>
+            ) : (
+              <Alert className="bg-yellow-950/30 border-yellow-500/30">
+                <AlertCircle className="h-4 w-4 text-yellow-400" />
+                <AlertDescription className="text-sm text-gray-300">
+                  Make sure you have withdrawn all funds from this mint before removing it.
+                </AlertDescription>
+              </Alert>
+            )}
             <div className="flex gap-3 justify-end">
               <Button variant="outline" onClick={() => setShowRemoveMintModal(false)}>
                 Cancel
@@ -677,7 +691,9 @@ export function CashuWallet() {
                 variant="destructive"
                 onClick={handleConfirmRemoveMint}
               >
-                Remove Mint
+                {mintToRemove && (balances[mintToRemove.url] || 0) > 0
+                  ? 'Remove anyway'
+                  : 'Remove Mint'}
               </Button>
             </div>
           </div>