docs(brand): add contextual Dash repository illustration

[coisa]

Add contextual Dash artwork showing Dash inspecting an immutable HTTP message and response formats 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 2026-10-05T18:18:02.234154Z	58d40f0	New commits
🔒 Security Review	✅ Completed 2026-10-05T18:18:24.169714Z	58d40f0	New commits

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: ASSERTIVE
• Plan: Advanced
• Run ID: 1f11d3de-3953-4fdb-9622-f50a97075343

📥 Commits

Reviewing files that changed from the base of the PR and between e68f7fe and 085fc36.

⛔ Files ignored due to path filters (1)

• docs/_static/mascot-banner.png is excluded by !**/*.png

📒 Files selected for processing (4)

• .gitattributes
• README.md
• assets/brand/README.md
• docs/_static/mascot-banner.receipt.json

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Summary

Summary by CodeRabbit

• Documentation
  • Added a centered Dash brand image below the README title.
  • Added documentation describing the image’s source, display details, authorization, and rights.
  • Excluded the brand artwork and related documentation assets from source exports.

Walkthrough

The README displays a centered Dash brand image with descriptive alt text and a width of 840 pixels. Supporting files document the artwork, its generation and review details, publication authorization, rights limits, and export exclusions.

Changes

Dash brand image

Layer / File(s)	Summary
Asset details and README display README.md, assets/brand/README.md, docs/_static/mascot-banner.receipt.json, .gitattributes	The README displays the Dash image at 840 pixels wide. Documentation and the receipt record asset provenance, generation and review details, publication authorization, and rights limits. Git attributes exclude the related assets from source exports.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 085fc

The README image and source-export behavior match the documented intent. The asset record discloses its rights limitation; no concrete issue remains that blocks merging.

Architecture Summary

Architecture risk: 🔵 Low · up to 085fc

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 centered markup displaying the Dash brand image with descriptive alt text and an 840-pixel width.
• observed — Modified behavior in assets/brand/README.md: Adds documentation identifying the contextual Dash artwork and its local and immutable-URL usage, linking its generation receipt and canonical brand kit, and recording publication authorization and the limits of the rights and license record.
• observed — Modified behavior in docs/_static/mascot-banner.receipt.json: Adds schema-versioned asset metadata identifying the banner, repository, collection, character, source-kit commit, and two reference assets with paths and SHA-256 hashes.
• observed — Modified behavior in docs/_static/mascot-banner.receipt.json: Records the image-generation tool, unreported model, detailed illustration prompt, and opaque-background setting.

🚥 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. 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.
Title check	✅ Passed	The title clearly describes the main change: adding a contextual Dash illustration to the repository documentation.
Description check	✅ Passed	The description explains the artwork, its README placement, archive exclusions, and reported validation. It is directly related to the changeset.

✨ Finishing Touches

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• Commit to this branch
• Create a new PR

• Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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_{A rabbit spots the banner bright,
And checks its trail from source to site.
The README shows it, centered wide,
Its receipt keeps details by its side.
From source exports, the files stay out,
Then off the rabbit hops about.}

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: e68f7fe0a0

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