[workshop-diagrams] Add theme-aware explanatory diagram for gh-aw CLI extension

[github-actions]

Migrates workshop/images/side-quest-01-02-gh-aw.svg from a single-theme SVG to a theme-aware light/dark pair, and updates the Markdown in workshop/side-quest-01-02-environment-reference.md to use the canonical <picture> block.

Change type: Migration of existing explanatory diagram

SVG files added:

• workshop/images/side-quest-01-02-gh-aw-light.svg — light theme (background #f6f8fa, text #24292f)
• workshop/images/side-quest-01-02-gh-aw-dark.svg — dark theme (background #0d1117, text #f0f6fc)

Why this helps learners: The gh-aw CLI conceptual diagram helps learners recognize the compile and run commands and understand what the extension adds on top of standard GitHub Actions (compile + validate, AI-first syntax, safe outputs). Making it theme-aware ensures it renders clearly in both GitHub light and dark mode, matching learner preferences throughout the Environment Reference side quest.

Markdown change: One <picture> block replaces the single ![...]() reference; the original side-quest-01-02-gh-aw.svg is still present and unreferenced pending cleanup in a follow-up.

Warning

Firewall blocked 2 domains

The following domains were blocked by the firewall during workflow execution:

• awmgmcpg
• storage.googleapis.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "awmgmcpg"
    - "storage.googleapis.com"

See Network Configuration for more information.

Generated by 🧠 Workshop Explanatory Diagram Generator · 77.4 AIC · ⌖ 7.28 AIC · ⊞ 6.4K · ◷

• expires on Jul 26, 2026, 5:42 AM UTC