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

TODO.md

@@ -0,0 +1,25 @@
+# TODO
+
+## AI-powered auto-translation of non-Swedish/English messages
+
+### Config file: ~/.hircrc
+```
+# AI translation settings
+ai_type=ollama          # ollama, vllm, or openai
+ai_host=localhost
+ai_port=11434
+ai_key=                 # API key (required for openai)
+ai_model=llama3
+ai_target_lang=english  # translate into this language
+ai_skip_langs=swedish,english  # don't translate these
+```
+
+### Implementation plan
+- Parse ~/.hircrc on startup
+- Detect messages that aren't in skip_langs (heuristic: non-Latin chars, or let the LLM decide)
+- Show original message immediately
+- Fork a child process that calls the AI API (OpenAI-compatible /v1/chat/completions endpoint — works for ollama, vllm, and openai)
+- Prompt: "Translate to {target_lang}. Reply with only the translation: {text}"
+- When child returns, insert translated line in italic below original in the scrollback
+- Only visible locally, not sent to channel
+- 1-5 sec delay is acceptable