[jaenster]

Draws an item exactly as Diablo II 1.14d does: the inventory icon, the hover tooltip, and the card that combines them.

Text (d2-item)

• statdesc.zig: the stat lines (descfuncs 1-28, stat groups, damage pairs, and the unstable descpriority sort).
• itemdesc.zig: the full card as LoadItemDesc (0x48dd90) builds it, with names per quality, set cards and requirements.

Pictures (new packages/itemdraw), in two stages

• Layout: a display list in 1.14d pixels (box, lines as colour runs with each glyph's Font16 frame and cell, icon and socket frame references with colour map and draw-mode alpha, tinted cells). JSON-serialisable, plus a plain-text export capped at 1024 bytes for alt text.
• Raster: draws a layout at any integer scale through glyph and sprite providers. libd2's own providers paint the 1.14d DC6 font and inventory art, byte-identical to the game at scale 1. A glyph provider may paint past its cell (declared pad) and gets the colour's RGB, for vector text with outlines.

One canvas: d2-formats' canvas now has straight-alpha put, fill, scaled remapped blits, baseline blits and compositing; itemdraw and render's object sprites draw through it (byte-identical).

Bindings, generated from the C headers (tools/bindgen, Zig)

• Checks every header against its package's capi.zig (exports, parameter counts, ABI number), then writes the raw layer for Rust (sys), Go (zz_abi.go, purego), .NET (Native.g.cs) and TypeScript (abi.ts), each with a smoke test.
• zig build bindings / zig build check-bindings (in CI).
• The hand wrappers now sit on the generated layer with unchanged public APIs; item drawing with layouts and providers in all four: Rust traits, Go interfaces (purego callbacks), .NET abstract classes (function pointers), npm ItemDrawer + rasterizeLayout (providers in JS).
• Rust links one combined static library; npm ships items.wasm (item, itemdraw) apart from the map module so map users do not download the item tables.
• net and util are reachable from every language.

One graphics module: d2-formats' canvas holds the RGBA canvas, palette blits with colour map and alpha, fill, composite, index-space draw and nearest scaling; MMPX and PNG stay in d2-util (domain-free; formats is zero-dep). itemdraw, render's object sprites and tools/sprite use it, their copies are gone, output byte-identical.

Test data: one top-level testdata/ (two engine saves, two kits, the goldens, layout goldens) that every package and language reads. Generated, not committed: the kit character's save (composed in the test) and the binding fixtures (zig build fixtures, run by CI before the language tests).

Generated files carry a "do not edit" header and are linguist-generated in .gitattributes.

Size (lines vs main; the charkit commits come from local main, not yet on origin/main)

part	before dedupe	after
hand-written code	+6056 -17	+9189 -696
generated (bindgen output)	0	+5374
test data (text)	+2965	+2679 (of which goldens 2562)
test data (binary)	16 files, 17.8 KB	2 saves, 6.1 KB
charkit	+3193	+3195 -2
docs	+148	+218

"After" hand-written includes bindgen (1.2k), the binding wrappers (2.5k, net of the 584 hand ABI lines the generator replaced), itemdraw (2.5k) and the item text (2.5k).

Tests

• 7 descfunc tests; goldens over 132 real items (396 pictures), unchanged through the split.
• Layout JSON golden, a box glyph provider at scale 2 and 4 on the same layout, C-callback and padded providers.
• Go, Rust, .NET (docker, linux-arm64), npm: generated smoke tests plus the shared fixtures, layout JSON and a provider at scale 2/4.

Design and the 1.14d functions each part follows: docs/item-draw.md; bindings: docs/BUILDING.md.

Before merge

• Compare with in-game screenshots, using the list in docs/item-draw.md.
• EpicAma item 26 shows Enigma's stats under the name "Duress", with runes Shael Um Thul. It could be the test character's data or a naming bug; check which.
• Not covered yet: shop cost lines, missile potion damage, quest-difficulty red names, stats that change with time of day, fractional scales.