feat(checklist): adiciona opção de desmarcar todos os itens

O botão "Concluir todos" agora alterna para "Desmarcar todos"
quando todos os itens do checklist estão marcados como concluídos.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

convex/tickets.ts

@@ -2722,6 +2722,34 @@ export const completeAllChecklistItems = mutation({
   },
 });
 
+export const uncompleteAllChecklistItems = mutation({
+  args: {
+    ticketId: v.id("tickets"),
+    actorId: v.id("users"),
+  },
+  handler: async (ctx, { ticketId, actorId }) => {
+    const ticket = await ctx.db.get(ticketId);
+    if (!ticket) {
+      throw new ConvexError("Ticket não encontrado");
+    }
+    const ticketDoc = ticket as Doc<"tickets">;
+    const viewer = await requireTicketStaff(ctx, actorId, ticketDoc);
+    ensureChecklistEditor(viewer);
+
+    const checklist = normalizeTicketChecklist(ticketDoc.checklist);
+    if (checklist.length === 0) return { ok: true };
+
+    const now = Date.now();
+    const nextChecklist = checklist.map((item) => {
+      if (item.done === false) return item;
+      return { ...item, done: false, doneAt: undefined, doneBy: undefined };
+    });
+
+    await ctx.db.patch(ticketId, { checklist: nextChecklist, updatedAt: now });
+    return { ok: true };
+  },
+});
+
 export const applyChecklistTemplate = mutation({
   args: {
     ticketId: v.id("tickets"),

src/components/tickets/ticket-checklist-card.tsx

@@ -2,7 +2,7 @@
 
 import { useMemo, useState } from "react"
 import { useMutation, useQuery } from "convex/react"
-import { CheckCheck, ListChecks, Plus, Trash2 } from "lucide-react"
+import { CheckCheck, ListChecks, Plus, RotateCcw, Trash2 } from "lucide-react"
 import { toast } from "sonner"
 
 import { api } from "@/convex/_generated/api"
@@ -62,6 +62,7 @@ export function TicketChecklistCard({
   const setChecklistItemRequired = useMutation(api.tickets.setChecklistItemRequired)
   const removeChecklistItem = useMutation(api.tickets.removeChecklistItem)
   const completeAllChecklistItems = useMutation(api.tickets.completeAllChecklistItems)
+  const uncompleteAllChecklistItems = useMutation(api.tickets.uncompleteAllChecklistItems)
   const applyChecklistTemplate = useMutation(api.tickets.applyChecklistTemplate)
 
   const templates = useQuery(
@@ -167,20 +168,27 @@ export function TicketChecklistCard({
     }
   }
 
-  const handleCompleteAll = async () => {
+  const allItemsDone = checklist.length > 0 && allDone === totalItems
+
+  const handleToggleAll = async () => {
     if (!actorId || !canEdit || isResolved) return
     setCompletingAll(true)
     try {
+      if (allItemsDone) {
+        await uncompleteAllChecklistItems({ ticketId: ticket.id as Id<"tickets">, actorId })
+        toast.success("Itens desmarcados.")
+      } else {
         await completeAllChecklistItems({ ticketId: ticket.id as Id<"tickets">, actorId })
         toast.success("Checklist concluído.")
+      }
     } catch (error) {
-      toast.error(error instanceof Error ? error.message : "Falha ao concluir checklist.")
+      toast.error(error instanceof Error ? error.message : "Falha ao atualizar checklist.")
     } finally {
       setCompletingAll(false)
     }
   }
 
-  const canComplete = checklist.length > 0 && requiredPending > 0 && canEdit && !isResolved
+  const canToggleAll = checklist.length > 0 && canEdit && !isResolved
   const visibleChecklist = useMemo(() => {
     return onlyPending ? checklist.filter((item) => !item.done) : checklist
   }, [checklist, onlyPending])
@@ -220,18 +228,27 @@ export function TicketChecklistCard({
               {onlyPending ? "Ver todos" : "Somente pendentes"}
             </Button>
           ) : null}
-          {canEdit && !isResolved ? (
+          {canEdit && !isResolved && canToggleAll ? (
             <Button
               type="button"
               variant="outline"
               size="sm"
               className="gap-2"
-              onClick={handleCompleteAll}
-              disabled={!canComplete || completingAll}
-              title={requiredPending > 0 ? "Marcar todos os itens como concluídos" : "Checklist já está concluído"}
+              onClick={handleToggleAll}
+              disabled={completingAll}
+              title={allItemsDone ? "Desmarcar todos os itens" : "Marcar todos os itens como concluídos"}
             >
+              {allItemsDone ? (
+                <>
+                  <RotateCcw className="size-4" />
+                  Desmarcar todos
+                </>
+              ) : (
+                <>
                   <CheckCheck className="size-4" />
                   Concluir todos
+                </>
+              )}
             </Button>
           ) : null}
           {canEdit && !isResolved && (templates ?? []).length > 0 ? (