Add AI translation, input history, line wrapping, /ctcp

- Auto-translate non-Latin messages via OpenAI-compatible API
- Config in ~/.hircrc (created on first run, disabled by default)
- Translation shown in italic below original message
- Arrow up/down for input history (50 entries)
- Long lines wrap properly on window redraw
- /ctcp command for sending CTCP requests
- Updated README with AI translation docs

README.md

@@ -88,6 +88,23 @@ Each window maintains its own scrollback. Switching redraws the full history.
 Holck's Mirk, OS: Linux 6.x.x x86_64 :: This space available for rent
 ```
 
+## AI Translation
+
+Optional auto-translation of messages in non-Latin scripts (Cyrillic, CJK, Arabic, etc.). Requires an OpenAI-compatible API (ollama, vLLM, or OpenAI).
+
+Configure `~/.hircrc` (created on first run with empty/disabled values):
+
+```
+ai_type=ollama
+ai_host=localhost:11434
+ai_key=
+ai_model=llama3
+ai_target_lang=english
+ai_skip_langs=swedish,english
+```
+
+When configured, foreign-script messages are shown immediately with an italic translation appearing below after 1-5 seconds. Leave values empty to disable.
+
 ## License
 
 Public domain.