Fiw Custom Items

[1.3.1] - NeoForge Kotlin crash fix and boss phase tools

NeoForge users running Kotlin for Forge or KotlinLangForge: update immediately. 1.3.0 crashes those packs at startup.

Fixed

• NeoForge startup crash next to Kotlin for Forge / KotlinLangForge (#1). The NeoForge jars merged the Kotlin standard library's classes into the mod jar, so the fiw_tools module exported kotlin.* packages and module resolution failed (ResolutionException: Modules fiw_tools and kotlin.stdlib export package ...). Kotlin now ships as a nested Jar-in-Jar library: NeoForge deduplicates it against any other mod's copy and loads the newest. Fiw Custom Items still needs no extra Kotlin mod on NeoForge. Affected NeoForge 1.21.1, 1.21.8 and 1.21.11; Fabric was not affected.

Added

• on_boss_phase trigger — fires held and worn item abilities for players near a FIW Bosses boss when it changes phase, with the boss as the target. Filter with range, phase (only when entering that phase) and bosses (boss config ids). Needs FIW Bosses 1.2.0+.
• boss_phase ability — admin tool that moves a FIW Bosses boss to the next, prev, or a set phase without touching its HP. Operator-only by default (requireOp). A refused use says why (single-phase boss, already first/last phase, fight not started), at most once per second. Example: examples/fiw_bosses_integration/items/phase_warden_rod.json; raiders_sigil.json shows on_boss_phase.