chore: normalize Clawdbot naming

src/cli/banner.ts

@@ -38,7 +38,7 @@ export function formatCliBannerLine(
   const commitLabel = commit ?? "unknown";
   const tagline = pickTagline(options);
   const rich = options.richTty ?? isRich();
-  const title = "🦞 ClawdBot";
+  const title = "🦞 Clawdbot";
   if (rich) {
     return `${theme.heading(title)} ${theme.info(version)} ${theme.muted(
       `(${commitLabel})`,

src/cli/tagline.ts

@@ -1,4 +1,4 @@
-const DEFAULT_TAGLINE = "All your chats, one ClawdBot.";
+const DEFAULT_TAGLINE = "All your chats, one Clawdbot.";
 
 const HOLIDAY_TAGLINES = {
   newYear: