feat(tools): add native team orchestration tool suite

Port team lifecycle, teammate runtime, inbox messaging, and team-scoped task flows into built-in tools so multi-agent coordination works natively without external server dependencies.

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

@@ -0,0 +1,29 @@
+const VALID_NAME_RE = /^[A-Za-z0-9_-]+$/
+const MAX_NAME_LENGTH = 64
+
+function validateName(value: string, label: "team" | "agent"): string | null {
+  if (!value || !value.trim()) {
+    return `${label}_name_required`
+  }
+
+  if (!VALID_NAME_RE.test(value)) {
+    return `${label}_name_invalid`
+  }
+
+  if (value.length > MAX_NAME_LENGTH) {
+    return `${label}_name_too_long`
+  }
+
+  return null
+}
+
+export function validateTeamName(teamName: string): string | null {
+  return validateName(teamName, "team")
+}
+
+export function validateAgentName(agentName: string): string | null {
+  if (agentName === "team-lead") {
+    return "agent_name_reserved"
+  }
+  return validateName(agentName, "agent")
+}