release: 0.2.6

## Bump
- [ ] Major
- [ ] Minor
- [x] Patch

## Changelog

### Fixed
- `instance_spaces` was stored in the `ViewConfigState` DMS container but not merged back into the `ViewConfig` at sync time — local YAML instance space overrides were silently dropped in both `merge_view_config_state()` and `_merge_local_view_config()`
