Add PAPI & LuckPerms integration docs, update config/indicator/formatter pages
docs: fix all [[text|page]] wiki links to standard Markdown [text](page)
docs: update position enums (SOURCE_ORIGIN/TARGET_EYE/TARGET_BOTTOM), fix background default to 0x00000000
docs: remove internal implementation details from wiki
docs: rename position enum values (PROJECTED->AIM, CLAMPED->SURFACE, RAY_TRACED->IMPACT, ATTACKER->ORIGIN) and fix descriptions
docs: add ignore-cancelled field (default true); remove impl-detail text
Add complete wiki documentation