fix(agent-teams): add strict identifier validation rules

src/tools/agent-teams/name-validation.ts

@@ -1,5 +1,7 @@
 const VALID_NAME_RE = /^[A-Za-z0-9_-]+$/
 const MAX_NAME_LENGTH = 64
+const VALID_TASK_ID_RE = /^[A-Za-z0-9_-]+$/
+const MAX_TASK_ID_LENGTH = 128
 
 function validateName(value: string, label: "team" | "agent"): string | null {
   if (!value || !value.trim()) {
@@ -27,3 +29,26 @@ export function validateAgentName(agentName: string): string | null {
   }
   return validateName(agentName, "agent")
 }
+
+export function validateAgentNameOrLead(agentName: string): string | null {
+  if (agentName === "team-lead") {
+    return null
+  }
+  return validateName(agentName, "agent")
+}
+
+export function validateTaskId(taskId: string): string | null {
+  if (!taskId || !taskId.trim()) {
+    return "task_id_required"
+  }
+
+  if (!VALID_TASK_ID_RE.test(taskId)) {
+    return "task_id_invalid"
+  }
+
+  if (taskId.length > MAX_TASK_ID_LENGTH) {
+    return "task_id_too_long"
+  }
+
+  return null
+}