[cowboyd]

What does this PR do?

Climb the very first rung on the ladder with the 61 adapted cases from Document-createTextNode.html, Document-createElement.html, and Document-createComment.html, enabled in wpt.config.ts.

Implement element, text, and comment creation with string conversion, element name validation, ASCII-only HTML casing, and node ownership and metadata.

Type of change

• Bug fix
• Feature
• Refactor (no behavior change)
• Documentation
• Performance improvement
• Tests
• Chore (dependencies, CI, tooling)

Checklist

• All tests pass (pnpm test)
• Files are formatted (pnpm format)
• I have added/updated tests for my changes (if applicable)
• I have added a changeset

AI-generated code disclosure

• This PR includes AI-generated code

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/bombshell-dev/ui/@clack/ui@53

commit: 6fb48d8

[codspeed]

Merging this PR will not alter performance

✅ 240 untouched benchmarks

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_{Comparing dom-basic-creation (6fb48d8) with main (6f7ed0d)}

[codspeed]

Merging this PR will degrade performance by 2.61%

⚡ 1 improved benchmark
❌ 1 regressed benchmark
✅ 238 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Memory	evergreen (500)	262 KB	391.1 KB	-33.01%
⚡	Memory	grass (100)	46.9 KB	33.1 KB	+41.57%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing dom-basic-creation (2a98c55) with wpt-suite-fixes (c24229f)}