fix: remove duplicacao de comentario na troca de responsavel e corrige avatar

- Remove criacao automatica de comentario ao trocar responsavel (ja aparece na timeline)
- Adiciona migration removeAssigneeChangeComments para limpar comentarios antigos
- Adiciona campos description, type, options, answer ao schema de checklist no mapper
- Cria mutation updateAvatar no Convex para sincronizar avatar com snapshots
- Atualiza rota /api/profile/avatar para sincronizar com Convex ao adicionar/remover foto

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

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

convex/tickets.ts

@@ -872,23 +872,6 @@ async function ensureTicketFormDefaultsForTenant(ctx: MutationCtx, tenantId: str
   }
 }
 
-export function buildAssigneeChangeComment(
-  reason: string,
-  context: { previousName: string; nextName: string },
-): string {
-  const normalized = reason.replace(/\r\n/g, "\n").trim();
-  const lines = normalized
-    .split("\n")
-    .map((line) => line.trim())
-    .filter((line) => line.length > 0);
-  const previous = escapeHtml(context.previousName || "Não atribuído");
-  const next = escapeHtml(context.nextName || "Não atribuído");
-  const reasonHtml = lines.length
-    ? lines.map((line) => `<p>${escapeHtml(line)}</p>`).join("")
-    : `<p>—</p>`;
-  return `<p><strong>Responsável atualizado:</strong> ${previous} → ${next}</p><p><strong>Motivo da troca:</strong></p>${reasonHtml}`;
-}
-
 function truncateSubject(subject: string) {
   if (subject.length <= 60) return subject
   return `${subject.slice(0, 57)}…`
@@ -3475,38 +3458,6 @@ export const changeAssignee = mutation({
       createdAt: now,
     });
 
-    if (normalizedReason.length > 0) {
-      const commentBody = buildAssigneeChangeComment(normalizedReason, {
-        previousName: previousAssigneeName,
-        nextName: nextAssigneeName,
-      })
-      const commentPlainLength = plainTextLength(commentBody)
-      if (commentPlainLength > MAX_COMMENT_CHARS) {
-        throw new ConvexError(`Comentário muito longo (máx. ${MAX_COMMENT_CHARS} caracteres)`)
-      }
-      const authorSnapshot: CommentAuthorSnapshot = {
-        name: viewerUser.name,
-        email: viewerUser.email,
-        avatarUrl: viewerUser.avatarUrl ?? undefined,
-        teams: viewerUser.teams ?? undefined,
-      }
-      await ctx.db.insert("ticketComments", {
-        ticketId,
-        authorId: actorId,
-        visibility: "INTERNAL",
-        body: commentBody,
-        authorSnapshot,
-        attachments: [],
-        createdAt: now,
-        updatedAt: now,
-      })
-      await ctx.db.insert("ticketEvents", {
-        ticketId,
-        type: "COMMENT_ADDED",
-        payload: { authorId: actorId, authorName: viewerUser.name, authorAvatar: viewerUser.avatarUrl },
-        createdAt: now,
-      })
-    }
   },
 });