Custom Glints

[1.1.0]

Added:
- Multi-layer glint system: items can now carry multiple independent glint layers, each with its own
  design, colors, speed, interpolate, scale, and simultaneous settings. NBT format changed from a flat
  tag to a `layers` list of compound tags. Old single-layer NBT is still read for backward compatibility.
- Glint Trims: found randomly in world loot chests. Each trim carries a glint pattern and up to 8 color
  slots. Combine with a dye in a crafting grid to add a color. Merge two trims to combine their color
  lists. Apply at a smithing table with glowstone dust to stamp the glint onto any item.
- Glint Tears: Simultaneous Tear and Sequential Tear. Craft either with any glinted item to toggle the
  simultaneous mode on all of its glint layers without changing any other settings.
- Glint Layer Tear: craft with two glinted Glint Trims to merge their layer arrays into one trim (up to 8 total layers). Each layer keeps its own design, colors, speed, and animation settings. Drops from loot at the same 20% chance as the other tears.
- Black Tear: craft with any glinted item to strip all glint data from it. The item is returned clean.
 Drops from loot at the same 20% chance as the other tears.
- Glint Trim duplication recipe: Trim (center) + 7 Diamonds + 1 Glowstone Dust in a full 3x3 grid yields 2 copies.
- /glint command for operators: /glint apply <design> <colors> [speed] [smooth] and /glint remove.
  Applies and removes glints using named tokens without touching NBT directly.
- GlintEditorScreen multi-layer editing via a layer selector.
- Per-color brightness control: the A field in the editor (0-255) dims individual color slots. 255 = full intensity, 0 = invisible.
- 5 new glint designs: crystal, ember, vein, solid, skulls (22 designs total including vanilla).
- Vanilla enchantment texture as a selectable glint design.
- Tooltips on all tear items describing what they do.
- Improved armor glint render scale — patterns now tile much more densely on armor pieces instead of appearing as large blobs.
- Glint Trims with multiple layers now show a layer count in the tooltip. Hold Shift to expand and see each layer's design and colors.
- Renamed "Black Tear" to "Black Glint Tear".

Fixed:
- Smithing recipe now reads simultaneous, speed, and interpolate from the trim's preview glint instead
  of hardcoding them. Apply a Simultaneous or Sequential Tear to a trim before smithing to set the
  render mode on the result.
- Glint Trims are no longer accepted as the base ingredient in the smithing recipe.
- The Glint Wand now remembers your last settings when you re-open the editor.
- Armor glint brightness now matches the A value set in the editor.
- Two players wearing armor with the same design but different colors no longer bleed each other's colors.
- Vanilla glint trim now displays "Vanilla Glint Trim" in its tooltip.
- Smithing a multi-layer Glint Trim now correctly applies all layers to the result (previously only
  the first layer was written).
- Merging two Glint Trims (color merge or layer merge) now requires both trims to have at least one
  dyed color. No-color base trims are rejected by both recipes.