* feat: mount user repo as read-only with deliverables bind-mount overlay
* feat: add playground and .playwright-cli overlay mounts
* feat: add filesystem context to pipeline-testing prompts
* fix: use explicit REPO_PATH in filesystem prompt for clarity
* fix: update filesystem prompts with playground notes and absolute screenshot paths
* feat: namespace writable overlays under .shannon/ to avoid polluting host repo
* refactor: rename playground to scratchpad
* fix: redirect playwright-cli output to writable .shannon/ overlay
* fix: pre-create .shannon/ overlay mount points for Linux compatibility
* fix: exclude nested node_modules and dist from Docker build context
* fix: enforce LF line endings for shell scripts on Windows
ezl-keygraph