fix: BotFather fingerprint uses all-hex (00000000000000000b0ffa00e000000f)

Old fp contained non-hex chars (o,r) which got stripped by normFP,
causing whois lookup failure and bot detection to miss.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

warzone/crates/warzone-server/src/main.rs

@@ -60,7 +60,7 @@ async fn main() -> anyhow::Result<()> {
         tracing::info!("Bot API enabled");
 
         // Auto-create BotFather if it doesn't exist
-        let botfather_fp = "0000000000000000botfather00000000";
+        let botfather_fp = "00000000000000000b0ffa00e000000f";
         let botfather_key = format!("bot_fp:{}", botfather_fp);
         if state.db.tokens.get(botfather_key.as_bytes()).ok().flatten().is_none() {
             let token = format!("botfather:{}", hex::encode(rand::random::<[u8; 16]>()));