feat(text): carry typography controls on the constraint wire (11.14 layer 1)

[thejustinwalsh]

What

Layer 1 of the 11.14 typography tier: the wire contract. Constraint records grow 56 → 84 bytes carrying the professional typography controls — none of them steer layout yet.

Field	Meaning
firstLineIndent	extra inline offset for the paragraph's first line
spaceBefore / spaceAfter	block-axis paragraph spacing
justifyMinWordSpaceRatio	word-space shrink floor, in (0, 1]; 0 = no shrink
justifyMaxWordSpaceRatio	word-space expansion cap, ≥ 1; 0 = unbounded
justifyLetterSpaceExpansion	per-gap letter-space budget once spaces cap out
lastLine	closed enum: auto (current behavior) or justify

Contract properties

• Zero-filled ratio/indent/spacing fields reproduce the pre-tier behavior exactly; lastLine is strictly validated (auto/justify, no open values).
• Rust decodes, range-validates, and retains the fields; the raw-byte geometry fingerprint already covers them, so any change invalidates flow automatically.
• The generated TS ABI, frame-wire encoder (optional inputs with zero defaults), record-size pins, and test request builders move in the same commit — the CI ABI drift gate stays meaningful.

Evidence

Rust: 173 lib tests including a new bounds test (accepts a full typography record; rejects negative indent/spacing, out-of-range ratios, NaN, and open last-line values). TS: a new frame-wire test decodes the compiled record at the generated offsets for both explicit values and defaults. Full package check green.

[github-actions]

size-limit report 📦

Path	Size
Core JS (gzip)	18.47 KB (+0.49% 🔺)
Shaper Wasm (gzip)	418.57 KB (-0.05% 🔽)
Three.js adapter JS (gzip)	60.29 KB (+0.34% 🔺)
Inter font · Bitmap (gzip)	545.27 KB (0%)
Inter font · MTSDF (gzip)	6.48 MB (0%)
Inter font · Slug (gzip)	604.06 KB (0%)
Font Awesome icons · Bitmap (gzip)	439.53 KB (0%)
Font Awesome icons · MTSDF (gzip)	6.89 MB (0%)
Font Awesome icons · Slug (gzip)	642.64 KB (0%)
Font validator JS (gzip)	134.24 KB (0%)
Runtime bake host JS (gzip)	5.38 KB (0%)
Runtime bake Worker JS (gzip)	142.45 KB (0%)
Font baker JS (gzip)	2.41 KB (0%)
Font baker Wasm (gzip)	379.63 KB (0%)
Bitmap baker JS (gzip)	4.66 KB (0%)
Bitmap baker Wasm (gzip)	228.31 KB (0%)
MTSDF baker JS (gzip)	5.39 KB (0%)
MTSDF baker Wasm (gzip)	209.22 KB (0%)
Slug baker JS (gzip)	4.01 KB (0%)
Slug baker Wasm (gzip)	181.24 KB (0%)