more ui fix for rebalance, and safegaurd as well.

api/src/server.ts

@@ -3355,6 +3355,7 @@ const ManualRebalanceBody = z.object({
     })
   ),
   forceLowerSavings: z.boolean().optional(),
+  confirmOver80: z.boolean().optional(),
 });
 
 async function assertPercentTotal(
@@ -3606,8 +3607,13 @@ app.post("/variable-categories/manual-rebalance", async (req, reply) => {
       .send({ ok: false, code: "SUM_MISMATCH", message: `Targets must sum to available (${availableCents}).` });
   }
   const maxAllowed = Math.floor(availableCents * 0.8);
-  if (availableCents > 0 && targets.some((t) => t.target > maxAllowed)) {
-    return reply.code(400).send({ ok: false, code: "OVER_80_PERCENT", message: "No category can exceed 80% of available." });
+  const over80 = availableCents > 0 && targets.some((t) => t.target > maxAllowed);
+  if (over80 && !parsed.data.confirmOver80) {
+    return reply.code(400).send({
+      ok: false,
+      code: "OVER_80_CONFIRM_REQUIRED",
+      message: "A category exceeds 80% of available. Confirm to proceed.",
+    });
   }
   const totalSavingsBefore = targets.filter((t) => t.isSavings).reduce((s, t) => s + t.currentBalance, 0);
   const totalSavingsAfter = targets.filter((t) => t.isSavings).reduce((s, t) => s + t.target, 0);