feat: improve cli setup flow

src/cli/tagline.ts

@@ -0,0 +1,45 @@
+const DEFAULT_TAGLINE =
+  "Send, receive, and auto-reply on WhatsApp (web) and Telegram (bot).";
+
+const TAGLINES: string[] = [];
+
+type HolidayRule = (date: Date) => boolean;
+
+const HOLIDAY_RULES = new Map<string, HolidayRule>();
+
+function isTaglineActive(tagline: string, date: Date): boolean {
+  const rule = HOLIDAY_RULES.get(tagline);
+  if (!rule) return true;
+  return rule(date);
+}
+
+export interface TaglineOptions {
+  env?: NodeJS.ProcessEnv;
+  random?: () => number;
+  now?: () => Date;
+}
+
+export function activeTaglines(options: TaglineOptions = {}): string[] {
+  if (TAGLINES.length === 0) return [DEFAULT_TAGLINE];
+  const today = options.now ? options.now() : new Date();
+  const filtered = TAGLINES.filter((tagline) => isTaglineActive(tagline, today));
+  return filtered.length > 0 ? filtered : TAGLINES;
+}
+
+export function pickTagline(options: TaglineOptions = {}): string {
+  const env = options.env ?? process.env;
+  const override = env?.CLAWDBOT_TAGLINE_INDEX;
+  if (override !== undefined) {
+    const parsed = Number.parseInt(override, 10);
+    if (!Number.isNaN(parsed) && parsed >= 0) {
+      const pool = TAGLINES.length > 0 ? TAGLINES : [DEFAULT_TAGLINE];
+      return pool[parsed % pool.length];
+    }
+  }
+  const pool = activeTaglines(options);
+  const rand = options.random ?? Math.random;
+  const index = Math.floor(rand() * pool.length) % pool.length;
+  return pool[index];
+}
+
+export { TAGLINES, HOLIDAY_RULES, DEFAULT_TAGLINE };