[HarnoorC]

Fixes #65 (also reported as #84).

Enchanted tools held in first person drift as the camera turns. Vanilla's glint unions can flatten item poses before capture, and the projected-glint wrapper used by compasses and clocks emits fully posed vertices, so correcting only captured bones misses that geometry. Once the tool holds still, main's glint shows as purple artifacts around it: glint is an opaque cutout shell 0.0005 blocks out from the item, and the 0.1 view-model scale shrinks that gap tenfold.

Apply camera/FOV correction and the view-model scale once at the common capture root. Preserve local meshes and hand-owned transforms through vanilla's unions and sprite wrappers, and keep projected-glint UVs written after the normal. Streamed and projected parts use transient meshes, and block-breaking cracks keep a block-local pose. Wrapper dispatch stays typed and allocation-free.

Draw glint with the runtime's color-additive emissive blend instead of as a cutout. Layers keep main's request-order identity and shell depth, except glint: vanilla requests it before its substrate, so it sits one shell past the deepest non-glint shell, banner patterns included. Layer and text spacing are compensated for the view-model scale. Vanilla's two glint textures scroll at vanilla's phase and Glint Speed through the existing texture-update API, at intensity 300 so the band stays visible in daylight, and Glint Strength scales them. The hidden first-person body, which only secondary rays see, draws its items without glint, so its emission does not light the scene around the player. No native signature or runtime pin changes.

Add Fabric integration tests that run capture and submission through the production path against a counting API: camera turns with both hands, pose replay, crack reuse, instance reuse for layers vanilla rebuilds on every call, text spacing, glint and glowing-sign depth read from the built mesh vertices, and the hidden body drawing no glint.

This PR covers first person only. In third person, a held tool's glint still covers the item's whole square card instead of just its opaque texels (screenshot in the comments). That is left for a follow-up.

Validation on 408bdee:

• gradlew.bat check: 813 JVM tests and 67 Fabric integration tests, no failures or skips.
• tools\rtx.bat check --tests with the commit-message scan over this branch: 1,162 tests and 178 subtests.
• In game, the latest main against this PR's head (408bdee), from the same position at night (before and after screenshots in the comments): on main the enchanted golden pickaxe held in first person is out of place and sits on a purple rectangle. On this head it stays in its corner and shows its glint with no purple artifacts around it, and nearby stone is not lit purple. When moving around, the tool no longer drifts as described in First-person held item is placed in world space and drifts with camera direction #84.

Signed-off-by: Harnoor Chima harnoorchima1@gmail.com

[HarnoorC]

Tested with enchanted golden pick axe in game:
(Before):

(After):

Third person has issues with transparent purple rectangles underneath the tool head.