Config Reconciler

Config Reconciler 0.2.0 (Fabric) - Alpha

Three-way merging of the old pack default, player configuration, and new pack default. Independent settings changes are combined; conflicts keep the player value by default and are reported. Supports JSON, properties, and a conservative TOML subset, with backups and dry-run mode.

Supported Minecraft versions: 1.18.2, 1.19.2, 1.19.4, 1.20.1, 1.20.4, 1.20.6, 1.21.1, 1.21.4, 1.21.5, 1.21.8, 1.21.10, 1.21.11, 26.1.2, 26.2.
Install only the JAR for your loader. Fabric API is not required.

Pack authors must put managed defaults under config/config_reconciler/defaults/ and must not also distribute their target files through normal launcher overrides.

Validation: 29 core tests plus dedicated-server bootstrap and actual two-launch merge checks on every tagged game version. EULA was not accepted in those checks; full gameplay and client GUI were not tested. Restart after a config update if another mod may have cached its settings early.

Alpha limitations: no in-game conflict editor or automatic restore, incomplete TOML parsing, no world-specific serverconfig or options.txt management. Reports/backups may contain sensitive config values.

MIT license. Developed with AI assistance. The avatar is an AI-generated symbolic illustration, not an in-game screenshot. Runtime libraries and Minecraft classes are not bundled.