Initial implementation of IRC LLM bot

Full implementation from spec: ZNC/IRC client with TLS, Ollama LLM backend,
per-user SQLite conversation memory, and Flask web admin portal with 7 pages.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

requirements.txt

@@ -0,0 +1,11 @@
+# HTTP client for Ollama
+httpx==0.27.0
+
+# Web portal
+flask==3.0.3
+jinja2==3.1.4
+
+# Config / env
+python-dotenv==1.0.1
+
+# socket and sqlite3 are Python stdlib — no install needed