Enhance documentation by adding a Developer section in SUMMARY.md and…

[thomaskimura]

… linking it in README.md

---

Note

Low Risk
Low risk documentation-only change that adds new markdown pages and updates navigation links; no runtime code paths are modified.

Overview
Adds a new Developer documentation section under slab/developer/ with guides for project setup, GitHub Actions, AI workflows, agent skills/commands, CSS, JavaScript, and theme variable/data flow.

Updates slab/SUMMARY.md to include this new section in the table of contents and updates slab/README.md to link to the Developer docs from the helpful links table.

^{Written by Cursor Bugbot for commit f8d18bc. This will update automatically on new commits. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

[cursor]

Local machine paths committed to public documentation

Medium Severity

Every new documentation file under slab/developer/ contains "Canonical files" sections listing absolute paths rooted at /Users/thomaskimura/Documents/GitHub/slab/. These are one developer's local machine paths and are meaningless — and potentially confusing or embarrassing — to anyone else reading the published docs. The same pattern appears in all seven new files: agent-skills-and-commands.md, css.md, github-actions.md, javascript.md, project-setup.md, using-ai.md, and variables.md. These paths were likely generated by an AI tool that captured the author's local environment and should be repository-relative paths instead.

Additional Locations (2)

• slab/developer/css.md#L6-L10
• slab/developer/github-actions.md#L6-L10