v1.0.3

Fix HA 2026.8+ compatibility: migrate to probatio

HA core removed voluptuous-openapi in #175128 (Use Probatio as
validation engine) and migrated open_router to probatio.to_openapi.
opencode_ha still imported voluptuous_openapi.convert, causing
ModuleNotFoundError on fresh 2026.10 installs.

Migrate entity.py to probatio with fallback for older HA, add
unsupported_keys filtering, switch to json_dumps and handle empty
choices to stay close to upstream open_router.

Fix sync loading

v1.0.2

Fix sync loading

Sort manifest keys

• Sort manifest.json keys
• Add actions

Initial release

Update README to include code source information

Added information about the code's basis on the official Open Router component.