Mythic Masters bot: widen the circle once orbit movement lands, add before/after fight shots (Part of #2945) #2951

Leftovers from PR #2949 (area C, opponent AI).

• The bot's circle lead is tiny (0.05 rad near the ring) because the current sim turns a fighter toward its movement, so circling exposes its flank and heavies lose to skirmishers. When area A (orbit movement, lock-on facing) merges, raise lead in the default branch of src/bot.ts and re-check with bun scripts/tune.ts --each 3.
• No before/after shots in docs/shots-/ from a running fight (?a=..&b=..&skin=..&watch=1): not captured in PR Mythic Masters: opponent AI circles, baits and punishes recovery (Part of #2945) #2949.
• Skirmisher and flyer branches were left as they were (the skirmisher already orbits); give the flyer a circle too if the feel wants it.