Add pluggable parser system, perception loop, and project infrastructure

Phase 0 (housekeeping):
- Add .gitignore to protect credentials and runtime files
- Track all project source code, docs, and config

Phase 1 (perception loop):
- Implement pluggable parser architecture (BaseMudParser ABC + ParserFactory)
- Add DeadSoulsParser with regex for HP/MP/SP prompt, room descriptions,
  exits (multiple formats), NPC/item detection, and combat events
- Add OutputBuffer for accumulating text between prompts
- Update GameState with SP support and update_from_prompt/room/combat methods
- Rewire main loop to use parser + buffer for real-time game state updates
- Add reconnection logic to TelnetClient (retry with backoff)
- Remove old TextParser (replaced by pluggable system)
- Add mud_type config field for selecting parser at runtime
- Add comprehensive test suite (50 tests, all passing)

.gitignore

@@ -0,0 +1,39 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+*.egg-info/
+.eggs/
+dist/
+build/
+
+# Virtual environment
+venv/
+.venv/
+env/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Data and logs (runtime generated)
+data/
+*.log
+
+# Database files
+*.db
+
+# Credentials - NEVER commit
+config.yaml
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Coverage reports
+htmlcov/
+.coverage
+.coverage.*