bugs / issues with datapackable exterior models

[Addi3]

• Bedrock datapack models have no sonic item translation ait#1830

• new datapack exterior models "float" in monitor ait#1819

• no animations for the interior doors

• BOTI cannot find door texture even tho it exists

[duzos]

couple separate bugs here, both modkit side:

1. interior door anims not playing — BedrockAnimationRegistry stores anim groups by just the last path segment (BedrockAnimationRegistry.java:91, throws away namespace + folders) but looks them up by the reference's namespace. so anything namespaced/nested (ie every datapack exterior) never resolves and silently bails with "unknown animation reference". only works for the flat hardcoded test files. fix: store + look up by the full Identifier (namespace + path) like BedrockModelRegistry does, and make BedrockAnimationReference round-trip a real Identifier so the AnimationTracker write/parse cycle isn't lossy on /.

2. BOTI can't find the door texture — BedrockModelProvider.getTexture() (BedrockModelProvider.java:14-31) infers the path rigidly as <namespace>:textures/<prefix>/<lastSegment>.png from the model id, so a datapack texture in any other folder can't be expressed even though the file exists. fix: let the model supply an explicit texture id instead of deriving it. also heads up models load from CLIENT_RESOURCES (resourcepack) not SERVER_DATA, so a texture shipped as datapack data won't load client-side without a /reload.

the two linked AIT issues are downstream symptoms of these two.