docs: spruce up README with mermaid diagram, emojis, and hyperlinks

[Copilot]

README was sparse and plain — bare URLs, no visual architecture overview, missing recently-added features.

Changes

• Mermaid flowchart — end-to-end architecture diagram: source files → build → auto-generated outputs → CI workflows → GitHub Pages live site
• Emojis — section headings, feature table rows, callout notes
• Hyperlinks — live site URL, data source citations (IEA, Microsoft, US Forest Service, Epoch AI, AI Index), and inline file/folder references all linked
• Feature table — added Doom achievements, Accelerate the Doom game, and Personal footprint calculator (existed in code, missing from docs)
• Misc — tagline, test:e2e command, PR preview URL pattern, "no build step" callout

Summary by CodeRabbit

• Documentation
  • Rebranded project name and updated introductory description
  • Expanded features section with new capabilities listed and iconized labels
  • Clarified local setup as a fully static site requiring no build step
  • Enhanced test instructions with new e2e testing command
  • Improved deployment documentation with preview URL guidance
  • Updated architecture section with detailed visual diagrams and source file reference table
  • Enriched environmental data sources with external reference links

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

I pity the fool who don't read this, sucka! The README.md got rebranded from "AI Death Clock" to "AI Token Deathclock," fool! Features section expanded with new items, deployment docs updated with gh-pages and preview URLs, architecture section completely overhauled with Mermaid diagrams, and test instructions clarified for jest and e2e coverage, jibber jabber!

Changes

Cohort / File(s)

Summary

Documentation Rewrite README.md

Rebranded project name, rewrote introduction and features section with iconized labels and new items ("Doom achievements," "Accelerate the Doom," "Personal footprint calculator"). Clarified local setup as fully static site. Revised test instructions with npm run test:e2e command. Reworked deployment documentation with gh-pages and preview URL details. Substantially restructured architecture section: removed ASCII tree, added Mermaid diagram, added "Key source files" table, and guidance on auto-generated files. Enriched environmental data sources with external links, foo'!

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

I pity the fool who tries to skip reviewing documentation changes, sucka! This here README got substantial rewrites across multiple sections with new diagrams and restructured content. I ain't going to let no fool miss the details in this here PR, jibber jabber!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main changes: documentation updates with Mermaid diagram, emojis, and hyperlinks added to README.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch copilot/improve-readme-appeal

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