Replace duplicate inline formatting with unified format+render pipeline.
New functions:
- format_match_event(e) — canonical dict for match events
- format_non_match_event(e) — canonical dict for non-match events
- render_match_lines(event_dict, i, mode) — text/HTML renderer
- render_non_match_lines(event_dict, i, mode) — text/HTML renderer
- send_chunked(...) — extracted Telegram chunking logic
Also fixed send_chunked() chunking bug: the original '. ' in line
check never matched event lines (period is followed by '</b>' not space).
Tests: 38 total, all passing.
Fixes: #14
