Introduce a simpler training-based workflow for the OnlineAcademy Playwright runner.
Changes included:
- support --training-dir and automatic loading of content.md and training.json
- support --env-file so OA credentials no longer need manual shell sourcing
- resolve asset paths relative to the training directory
- improve human-readable review and execute output with step-by-step progress
- keep the browser open after execute when no save flag is used
- add optional --save flow that clicks 'Opslaan als' and then chooses 'Concept'
- add a concrete user guide for preparing and running training imports
- update handover documentation to reflect the current repo structure and workflow
- align the repo around trainings/<name>/content.md, training.json and assets/
- remove reliance on older pilot/test material in the documented main flow
kodi