Clean up docs folder structure - move leftover files to internal/archive

[Copilot]

What does this PR do?

Reorganizes docs folder to maintain only internal/ and public/ at root level. Moves leftover documentation from recent tasks to appropriate locations:

To docs/internal/:

• DEPLOYMENT.md - operational documentation

To docs/internal/archive/:

• UI implementation/audit docs (_UI_CONSISTENCY_AUDIT.md, _UI_IMPLEMENTATION_FINAL.md, _UI_IMPLEMENTATION_SUMMARY.md)
• Timeline chart feature docs (timeline-charts-x-axis-changes.md, timeline-chart-bounds-fix.md)
• Historical performance reports folder (3 files)

Result: Clean docs root with only two folders, all content preserved.

Related issue

Checklist

• Tests pass (pnpm test)
• Linting passes (pnpm lint)
• Build succeeds (pnpm build)

Original prompt

Clean up docs folder. There should only be the "internal" and "public" folders. Currently there are some leftover doc files from some recent tasks. Ensure the content in them is moved appropriately.

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[bcanfield]

Also ensure that any docs in the .github folder are moved / consolidated (if deemed appropriate). Do nothing if you think that is the correct thing to do also @copilot

[Copilot]

Also ensure that any docs in the .github folder are moved / consolidated (if deemed appropriate). Do nothing if you think that is the correct thing to do also @copilot

I reviewed all documentation in .github/ and determined no moves are needed:

Files in .github/:

• DEPLOYMENT.md (81 lines) - Quick reference for GitHub Actions deployment commands, complements the comprehensive guide in docs/internal/
• workflows/PUBLISHING_MCP_SERVER.md - Workflow-specific npm publishing documentation, belongs with the workflow
• instructions/*.instructions.md - Agent instructions required by GitHub Copilot system, must stay in .github/
• PULL_REQUEST_TEMPLATE.md - Standard GitHub template location

These files serve active operational purposes and are appropriately located in .github/. The DEPLOYMENT.md files are not duplicates - they serve different purposes (quick reference vs comprehensive guide).