fix(examples): commands example needs code fixes

[RAprogramm]

Problem

The commands example doesn't compile:

• Uses #[entity(commands)] and #[command()] attributes
• Needs verification that command generation works
• Code needs updates to match current macro API

Tasks

• Verify commands feature is implemented
• Fix dependencies and imports
• Ensure example compiles and runs

Related

Part of examples restructuring (#66)

[RAprogramm]

Fixed in dev branch. Commands example now compiles and works correctly.