Switch nick to clod, identify to NickServ, allow #/g/tv

- Nick is now clod with clod_ as fallback; while on a fallback nick the
  server retries NICK clod every nick_retry_seconds (default 180).
- Identify to NickServ whenever holding the configured nick, using the
  password in nickserv_password.txt (gitignored).
- Add #/g/tv to allowed_channels.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

config.json

@@ -2,10 +2,12 @@
   "server": "irc.rizon.net",
   "port": 6697,
   "tls": true,
-  "nick": "tpuahsiew_claude",
-  "fallback_nicks": ["tpuahsiew_claude_", "tpuahsiew_claude2"],
+  "nick": "clod",
+  "fallback_nicks": ["clod_"],
   "username": "claude",
   "realname": "Claude Code IRC MCP",
-  "allowed_channels": ["#blog"],
-  "buffer_size": 200
+  "allowed_channels": ["#blog", "#/g/tv"],
+  "buffer_size": 200,
+  "nickserv_password_file": "nickserv_password.txt",
+  "nick_retry_seconds": 180
 }