fix(compiler,ui): emit numeric/boolean raw CSS declarations [#2783]

[viniciusdacal]

Summary

Fixes #2783. Raw object declarations inside css({...}) and variants({...}) selectors used to silently drop non-string values. Numeric, unary-negative, and boolean values now flow through the same kebab-case + unitless/px formatting in both the AOT compiler and the runtime.

css({
  card: [
    {
      '&:hover': {
        fontSize: 16,    // → font-size: 16px
        opacity: 0.8,    // → opacity: 0.8 (unitless)
        marginTop: -8,   // → margin-top: -8px
        '--my-tone': 1,  // → --my-tone: 1 (custom property)
        padding: 0,      // → padding: 0 (zero is unitless)
      },
    },
  ],
});

Public API Changes

Additions — none. The fix removes a silent data loss in an existing API path; no signatures change.

Breaking — none.

What changed

• native/vertz-compiler-core/src/css_transform.rs

  • is_static_scalar_value and is_static_css_declarations now accept BooleanLiteral alongside StringLiteral, NumericLiteral, and UnaryExpression(-, NumericLiteral).
  • extract_scalar_value adds a BooleanLiteral → StyleDeclValue::String(b.value.to_string()) arm.
  • extract_css_declarations was rewritten to use extract_scalar_value + format_style_value (instead of the StringLiteral-only path), and skips empty property keys.
  • 9 new tests under "Array-form raw declarations: numeric values [compiler(css): extract_css_declarations drops numeric values like { opacity: 1 } #2783]".

• packages/ui/src/css/css.ts

  • New formatRawDeclaration() helper that mirrors the AOT compiler's extract_css_declarations (camelCase → kebab-case, formatStyleValue for px/unitless rules, custom-property passthrough).
  • Both the array-form raw-decl path and the direct-object form path now route through it. The runtime previously emitted fontSize: 16 (no kebab, no px) inside nested raw decls — fixed.

• packages/ui/src/css/__tests__/css-raw-declarations.test.ts

  • 6 new TS parity tests covering the same matrix as the Rust tests.

• .changeset/css-raw-decl-numeric-extraction.md (patch).

Test Plan

• Rust: cargo test --all green (74 tests in css_transform)
• Rust: cargo clippy --all-targets -- -D warnings clean
• Rust: cargo fmt --all -- --check clean
• TS: full test suite green (2186/2247 passing, rest pre-existing skips)
• TS: oxlint packages/ clean on changed files
• TS: oxfmt --check packages/ clean
• Existing TS↔Rust unitless parity test passes
• Adversarial review at reviews/issue-2783/phase-01-numeric-extraction.md — no blockers, both should-fix items addressed

Closes #2783.

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com