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/state.rs

@@ -174,7 +174,7 @@ impl AppState {
     /// Returns true if delivered instantly (local or remote).
     pub async fn deliver_or_queue(&self, to_fp: &str, message: &[u8]) -> bool {
         // BotFather: intercept messages to @botfather
-        if self.bots_enabled && to_fp == "0000000000000000botfather00000000" {
+        if self.bots_enabled && to_fp == "00000000000000000b0ffa00e000000f" {
             // Extract sender from message
             if let Ok(msg) = serde_json::from_slice::<serde_json::Value>(message) {
                 let from = msg.get("from").and_then(|v| v.as_str()).unwrap_or("");