feat: update token auth flow

src/commands/auth-token.ts

@@ -0,0 +1,37 @@
+import { normalizeProviderId } from "../agents/model-selection.js";
+
+export const ANTHROPIC_SETUP_TOKEN_PREFIX = "sk-ant-oat01-";
+export const ANTHROPIC_SETUP_TOKEN_MIN_LENGTH = 80;
+export const DEFAULT_TOKEN_PROFILE_NAME = "default";
+
+export function normalizeTokenProfileName(raw: string): string {
+  const trimmed = raw.trim();
+  if (!trimmed) return DEFAULT_TOKEN_PROFILE_NAME;
+  const slug = trimmed
+    .toLowerCase()
+    .replace(/[^a-z0-9._-]+/g, "-")
+    .replace(/-+/g, "-")
+    .replace(/^-+|-+$/g, "");
+  return slug || DEFAULT_TOKEN_PROFILE_NAME;
+}
+
+export function buildTokenProfileId(params: {
+  provider: string;
+  name: string;
+}): string {
+  const provider = normalizeProviderId(params.provider);
+  const name = normalizeTokenProfileName(params.name);
+  return `${provider}:${name}`;
+}
+
+export function validateAnthropicSetupToken(raw: string): string | undefined {
+  const trimmed = raw.trim();
+  if (!trimmed) return "Required";
+  if (!trimmed.startsWith(ANTHROPIC_SETUP_TOKEN_PREFIX)) {
+    return `Expected token starting with ${ANTHROPIC_SETUP_TOKEN_PREFIX}`;
+  }
+  if (trimmed.length < ANTHROPIC_SETUP_TOKEN_MIN_LENGTH) {
+    return "Token looks too short; paste the full setup-token";
+  }
+  return undefined;
+}