# Implementation: Remove File System Watcher

## Summary
Removed the half-implemented `refresh.py` file system watcher module and updated the dashboard README to reflect the actual client-side polling refresh mechanism.

## Files Changed
- `automaton/dashboard/core/refresh.py` — deleted
- `automaton/dashboard/README.md` — removed watcher from architecture diagram, fixed tree formatting

## Verification
- `automaton/dashboard/core/refresh.py` no longer exists.
- `python -m automaton.dashboard` still starts and refreshes via JS polling.
- `python -m pytest tests/` still passes.

## Decisions
- The dashboard uses client-side polling (`setInterval`) for auto-refresh.
- No replacement watcher was implemented.