docs(brand): add contextual Dash repository illustration

[coisa]

Add contextual Dash artwork showing Dash comparing a running clock with a frozen clock in docs/_static/mascot-banner.png and display its relative path from the README at width 840. Exclude /docs/ and root /README*.md files from package archives together.

Validation: PNG structure, 1536 x 1024 dimensions and SHA-256 verified; git archive contains no docs or root README Markdown; README path and alt text match; git diff --check passed.
No runtime PHP code changed.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-05T18:16:58.176788Z	c0346a0	New commits
🔒 Security Review	✅ Completed 2026-10-05T18:17:48.008462Z	c0346a0	New commits

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Review configuration:

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: ASSERTIVE
• Plan: Advanced
• Run ID: 6797f81e-9047-459d-a37c-5aa3bd7408a8

📥 Commits

Reviewing files that changed from the base of the PR and between 8da529b and 0eeb2a8.

📒 Files selected for processing (1)

• .github/workflows/tests.yml

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: ASSERTIVE
• Plan: Advanced
• Run ID: 06590c1f-9860-4bdc-b917-09ea5e254060

📥 Commits

Reviewing files that changed from the base of the PR and between 51882a2 and 8da529b.

📒 Files selected for processing (1)

• .github/workflows/tests.yml

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📝 Summary

Summary by CodeRabbit

• Documentation
  • Added a centered Dash logo beneath the README title, with descriptive alternative text.
• Chores
  • Root-level files matching README*.md are excluded from exported archives.
  • Updated automated test workflow permissions and status reporting. Required-status reporting is disabled for Dependabot runs and enabled for other runs.

Walkthrough

The changes add a centered logo to the README, exclude root-level README files from Git exports, and update the test workflow permissions and required-status setting.

Changes

Dash README image

Layer / File(s)	Summary
README logo README.md	The README adds a centered Dash logo with descriptive alternative text and a width of 840 pixels.

Git export filtering

Layer / File(s)	Summary
README export rule .gitattributes	Root-level files matching /README*.md are marked as export-ignore.

Test workflow statuses

Layer / File(s)	Summary
Required status publishing .github/workflows/tests.yml	The workflow sets permissions to contents: read and statuses: write. It passes publish-required-statuses: false for dependabot[bot] and true for other actors.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 8da52

The README, export, and workflow changes have no identified merge-blocking issue; proceed with normal checks.

Architecture Summary

Architecture risk: 🔵 Low · up to f41b0

The change affects 3 systems.

Changed systems: assets, docs, README.md

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — assets (service) was modified; 1 changed file maps to changed impact.
• observed — docs (service) was modified; 1 changed file maps to changed impact.
• observed — README.md (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in README.md: Added a centered logo image with descriptive alternative text and a width of 840 pixels.
• observed — Modified behavior in assets/brand/README.md: Identifies the contextual illustration and its local path, explains the root README’s immutable-commit URL versus the documentation path, and captions the clock scene.
• observed — Modified behavior in assets/brand/README.md: Records the superseded welcome-copy history and the commits used for the current clock scene, describes its visual comparison with the approved welcome master, and links the generation receipt and canonical brand kit.
• observed — Modified behavior in assets/brand/README.md: Records the maintainer’s dated authorization for public README and documentation use, states that historical source-art rights are unrecorded, and disclaims an independent asset license or extension of the software license to the image.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the primary documentation and branding change: adding contextual Dash artwork to the repository.
Description check	✅ Passed	The description accurately covers the artwork, README display, archive exclusions, validation steps, and lack of runtime PHP changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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.

✨ Finishing Touches 💡 1

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_{A rabbit sees a logo shine,
Beneath the title, neat and fine.
README files leave exports clear,
Status checks take a narrower gear.
The rabbit hops through changes bright,
Then nibbles greens beneath the night.}

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: b0744dd91b

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