fix: pin litellm version

fix: readd example skill

fix: add .swp to .gitignore

chore: remove unused files

baseline: pass_rate=1.0000

iter 2: pass_rate=0.5385 - Added 5 diverse examples (rescheduled event, recurring with instructor, multiple events, null fields), emphasized full location extraction, strengthened JSON-only output rule, added explicit notes field for secondary events, and clarified instructor=organizer and email signature rules to address failures across all 6 evals.

iter 1: pass_rate=0.4615 - Rewrote SKILL.md with concrete examples showing exact JSON output format, explicit field-by-field rules, null handling examples, and stronger emphasis on returning only a fenced JSON code block to improve extraction accuracy with the small phi3 model.

baseline: pass_rate=0.3590

baseline: pass_rate=0.5385

baseline: pass_rate=0.6522