Retromod

Ninth snapshot of the 1.3.0 line.

Added

• Moves a legacy accessor-only Mixin when one target, an exact owner-scoped field redirect, and an unchanged descriptor prove the new owner. It follows Mixin's implicit-name rules and adds @Mutable only when the shim marks that destination as mutable.

Fixed

• Repairs legacy block random-tick accessors after the field moved from Block to BlockBehaviour and became final. Calls through a proven setter now refresh every cached block state, so the new value reaches random-tick scheduling.
• Updates 48 same-contract GameRules constants after Fabric intermediary names expand to retired RULE_* spellings on 26.1 and newer. Retromod leaves the changed fire-tick rule and three inverted boolean rules untouched because a field rename cannot preserve their values.
• Transforms explicitly selected aot and batch inputs when their metadata omits the source Minecraft version. Retromod applies only matching-loader shims available on the selected host, while automatic scans still leave unknown-version native mods alone.
• Prevents <target, <=target, and >target Fabric constraints from being mistaken for native target declarations. Exact target predicates and matching wildcards still pass through unchanged.
• Uses the detected Minecraft host version for transforms started from the in-game compatibility screen. A 26.2 client no longer prepares those mods as 26.1 output.
• Takes an immutable snapshot of a mod's classes before parallel Fabric, Forge, or NeoForge transforms begin. Frame rebuilding and post-remap adapters no longer risk reading a class while another worker replaces it.
• Preserves the implementation namespace of bundled MixinExtras libraries while still translating legacy calls from mod code. Nested-jar transforms no longer disable MixinExtras initialization and break unrelated Fabric API mixins that use @Local parameters.
• Applies matching common API bridges during known-source CLI and AOT transforms. API release numbers stay outside Minecraft version-chain searches.
• Selects library API repairs outside the Minecraft graph while still gating host-versioned API repairs. Explicit same-version CLI and AOT transforms can apply those providers.
• Updates staged resource and data packs through Minecraft 26.2, including current minor pack formats. Data packs run compatible 26.x content migration when needed, while legacy resource packs run item-definition and content migration only during an actual format upgrade.
• Processes staged resource and data packs on Fabric, Quilt, Forge, and NeoForge instead of limiting pack work to Fabric startup.
• Reads the Minecraft dependency from quilt.mod.json and keeps it authoritative when a jar also contains Fabric metadata. The shared Fabric artifact carries both metadata files and uses entrypoint contracts Quilt Loader can invoke, so Retromod does not publish a separate Quilt artifact.
• Keeps the Windows and Unix release builders on the same version, Minecraft matrix, integrity checks, artifact counts, and checksum output. build.sh and build.bat now delegate to the canonical builders.

Changed

• Updates JUnit Jupiter from 5.10.1 to 6.1.3 and the release publisher's charset-normalizer from 3.4.9 to 3.5.1.

Accessor owner moves still refuse multiple Mixin targets, mixed-purpose interfaces, unmatched companion accessors, conflicting destination fields, method-shaped redirects, and descriptor changes. Unknown-source fallback has no exact starting version, so a precise metadata version remains safer. Pack migration refuses unknown targets, malformed metadata, newer-only input, overlays, and conflicting paths. Those sources remain staged. The removed fire-tick boolean and inverted game rules need value-aware adapters.