Apply JuliaPackageTemplate

[joshday]

Summary

• Apply standardized CI, docs, and tooling infrastructure from JuliaPackageTemplate
• Add Quarto-based versioned documentation (replaces Documenter.jl)
• Add Dependabot for GitHub Actions and Julia dependency updates
• Add coverage report to docs
• Add CLAUDE.md for AI-assisted development
• Clean up old CI workflows (TagBot, CompatHelper) and Documenter.jl files

Changes

New/Updated files:

• .github/workflows/CI.yml - Multi-platform CI (Ubuntu, Windows, macOS)
• .github/workflows/Docs.yml - Quarto docs with versioned deployment to gh-pages
• .github/dependabot.yml - Automated dependency updates
• CLAUDE.md - Development instructions for AI assistants
• .gitignore - Updated ignore patterns
• .claude/settings.local.json - Claude Code permissions
• docs/ - Full Quarto documentation setup with API docs, changelog, and coverage

Removed files (if they existed):

• docs/make.jl (Documenter.jl build script)
• docs/src/ (Documenter.jl source directory)
• .github/workflows/TagBot.yml
• .github/workflows/CompatHelper.yml

Test plan

• CI workflow runs successfully on all platforms
• Docs workflow builds and deploys to gh-pages
• Dependabot creates PRs for outdated dependencies
• README badges link correctly

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