IG: Durability Multiplier

[1.2.3+26.2] - 2026-08-21

Added

• Fractional Durability & Percentage Scaling: Upgraded durability math and GameRules from whole integer multipliers to granular percentages (ig:dm_percent_*), fully supporting durability reductions below 1x (e.g. 50 = 50% half durability / 2x wear, 25 = 25% quarter durability) as well as boosts (e.g. 200 = 200% double durability, 150 = 150% 1.5x durability).
• Tooltip Display Format Setting: Added tooltipFormat option in config and Cloth Config GUI with three selectable modes: ADAPTIVE (shows 2x for round multiples, 50% / 150% for fractions/reductions), PERCENTAGE (always %), and MULTIPLIER (always x).
• Automated Durability Test Suite: Added comprehensive JUnit 5 test suite (DurabilityHelperTest) asserting probabilistic damage distribution, boundary cases, and tooltip formatting across all modes.

Changed

• Config Version 2 Migration: Bumped DurabilityConfig to version 2 with automated backward-compatible migration (multiplier * 100) from existing v1 configuration files.
• Rule Renaming: Migrated gamerules to ig:dm_percent_global, ig:dm_percent_weapons, ig:dm_percent_swords, etc. Default global is 200% (2x), with specific category overrides defaulting to 0 (inherit).