v0.4.0

Jupyter Cache Actions

Added

• build-jupyter-cache - Dedicated action for building and caching notebook execution

  • Runs on main branch (scheduled weekly or on push)
  • Full notebook execution with Jupyter Book
  • Saves execution cache with unique key (build-{env-hash}-{run-id})
  • Verification step ensures cache validity before saving
  • Creates GitHub issue on build failure with duplicate prevention
  • Uploads execution reports as artifacts on failure

• restore-jupyter-cache - Dedicated action for restoring notebook execution cache

  • Runs on PR branches (read-only restore, never saves)
  • Prefix-based matching finds most recent cache
  • Detailed cache status output (hit/miss, matched key)
  • ~80% build time reduction when cache available (tested: 16m53s → 3m28s)

• Workflow Templates (templates/)

  • cache.yml - Container-based cache workflow for lecture repos
  • cache-standard.yml - Standard runner workflow (with LaTeX install)
  • README.md - Template documentation and usage instructions

Changed

• BREAKING: Removed caching inputs from build-lectures
  • Removed cache-notebook-execution input
  • Removed use-build-cache input
  • Removed build-cache-hit output
  • Migration: Use dedicated build-jupyter-cache and restore-jupyter-cache actions

Documentation

• Updated ARCHITECTURE.md with Layer 2 caching strategy
• Updated MIGRATION-GUIDE.md with cache workflow examples
• Updated QUICK-REFERENCE.md with cache action reference
• Added comprehensive README for both cache actions