refactor(css): replace typed bogus nodes with CssBogus

[denbezrukov]

Summary

Replaces CSS typed bogus nodes with the shared CssBogus node to reduce the number of CSS syntax kinds.

The CSS grammar had grown enough SCSS and at-rule support that it exceeded the fixed SyntaxKindSet capacity in
biome_rowan, which forced an undesirable global bitset-size bump.

Test Plan

cargo test -p biome_css_parser
cargo test -p biome_css_formatter

[changeset-bot]

⚠️ No Changeset found

Latest commit: f7ddaa7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[github-actions]

Parser conformance results on

js/262

Test result	main count	This PR count	Difference
Total	53078	53078	0
Passed	51858	51858	0
Failed	1178	1178	0
Panics	42	42	0
Coverage	97.70%	97.70%	0.00%

jsx/babel

Test result	main count	This PR count	Difference
Total	38	38	0
Passed	37	37	0
Failed	1	1	0
Panics	0	0	0
Coverage	97.37%	97.37%	0.00%

markdown/commonmark

Test result	main count	This PR count	Difference
Total	652	652	0
Passed	652	652	0
Failed	0	0	0
Panics	0	0	0
Coverage	100.00%	100.00%	0.00%

symbols/microsoft

Test result	main count	This PR count	Difference
Total	5466	5466	0
Passed	1915	1915	0
Failed	3551	3551	0
Panics	0	0	0
Coverage	35.03%	35.03%	0.00%

ts/babel

Test result	main count	This PR count	Difference
Total	636	636	0
Passed	568	568	0
Failed	68	68	0
Panics	0	0	0
Coverage	89.31%	89.31%	0.00%

ts/microsoft

Test result	main count	This PR count	Difference
Total	18875	18875	0
Passed	13014	13014	0
Failed	5860	5860	0
Panics	1	1	0
Coverage	68.95%	68.95%	0.00%

[codspeed-hq]

Merging this PR will improve performance by 12.75%

⚡ 1 improved benchmark
✅ 28 untouched benchmarks
⏩ 187 skipped benchmarks¹

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	css_analyzer[tachyons_11778168428173736564.css]	162.8 ms	144.4 ms	+12.75%

---

_{Comparing db/bogus-css (f7ddaa7) with main (795bad4)}

Footnotes

1. 187 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 6cad85c2-c9dc-4c30-9de4-2baa187fd764

📥 Commits

Reviewing files that changed from the base of the PR and between 40814fa and f7ddaa7.

⛔ Files ignored due to path filters (1)

• crates/biome_css_analyze/tests/specs/suspicious/noIrregularWhitespace/invalid.css.snap is excluded by !**/*.snap and included by **

📒 Files selected for processing (1)

• crates/biome_css_analyze/src/lint/suspicious/no_irregular_whitespace.rs

---

Walkthrough

This PR collapses many specialised "bogus" CSS variants into a single CssBogus variant across grammar, parser, analyzer and formatter crates. It updates match arms and parser recovery kinds to use CssBogus/CSS_BOGUS, removes numerous boilerplate bogus-formatters and their generated impls, and simplifies the codegen/kinds to expose the unified bogus alternative instead of many CssBogusXxx variants. No behavioural control-flow changes beyond variant/name unification are introduced.

Possibly related PRs

• feat(css): add support for SCSS @mixin at-rule #9423 — Overlaps formatter changes to AnyCssAtRule (same match-arm surface for bogus variants).
• fix(css): improve unicode wildcard range recovery #9354 — Modifies unicode-range parser/recovery logic affected by this PR’s switch to CSS_BOGUS.
• feat(css): support scss nesting declarations in declaration lists #9135 — Edits the same assist match arms in use_sorted_properties, touching the same bogus-variant renames.

Suggested labels

L-SCSS

Suggested reviewers

• ematipico

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarises the main change: replacing typed bogus CSS nodes with a unified CssBogus node.
Description check	✅ Passed	The description is well-related to the changeset, explaining the motivation (reducing syntax kinds to avoid bitset capacity issues) and providing a test plan.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch db/bogus-css

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