brand: update the logo wordmark

[LJAYi]

Summary

• replace the wordmark in the light and dark logo assets with the confirmed refined outlines
• preserve the finalized product mark and its calibrated geometry
• retain theme-specific wordmark colors for light and dark backgrounds
• add the approved 2029 × 775 raster artwork as logo-reference.png for visual comparison

Verification

• rendered both SVG assets at 2x resolution
• validated both files with xmllint
• verified the raster reference against its original SHA-256 checksum
• ran pnpm check
• ran pnpm test
• ran pnpm build

Summary by CodeRabbit

• Documentation
  • Added an approved raster logo reference asset.
  • Clarified guidance for using raster files versus SVG website assets.
  • Retained requirements for logo resizing and clear space.

[coderabbitai]

📝 Walkthrough

Walkthrough

The brand documentation adds logo-reference.png as an approved raster reference asset. It distinguishes raster use for comparison and fixed-size profile or browser contexts from preferred SVG use for websites.

Changes

Brand assets

Layer / File(s)	Summary
Asset usage guidance docs/brand.md	Adds the approved raster logo reference. Clarifies raster asset use for comparison and fixed-size profile or browser contexts. Retains SVG as the preferred website asset and preserves resizing and clear-space requirements.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• LJAYi/mmd2pptx#13: Refines guidance for branding assets documented by this change.
• LJAYi/mmd2pptx#14: Updates overlapping brand asset documentation in docs/brand.md.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the primary change: updating the logo wordmark.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch brand/use-refined-wordmark

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