Balatro x F.E.A.R. bridge (Balatro side) - UNTESTED SKELETON

Status: source only, unpublished, not run in Balatro.

Done: lovely-injector module patch that loads bridge.lua; file hand-off (hand.json out, result.json in).

Still to do (all unverified):

1. Patch point where a hand is played, to call send_hand().
2. Patch point to switch off normal hand scoring and apply chips from poll_result().
3. Fallback message when F.E.A.R. isn't installed.
4. The F.E.A.R. companion mod (reads hand.json, builds the fight from loadouts.json, writes result.json).
5. Melty recipe, one_click_check, local test, screenshot. F.E.A.R. is not in Melty's catalog, so this cannot go live yet.