v0.4.16

What's Changed

• P2: Code signing for exe + installer (CI integration) by @Kinin-Code-Offical in #43
• P2: winget/choco/scoop distribution by @Kinin-Code-Offical in #44
• P2: Enterprise policy.json (updates/auth constraints, rollout control) by @Kinin-Code-Offical in #45
• P2: Service-aware upgrade coordination (stop/start service safely) by @Kinin-Code-Offical in #46

Full Changelog: v0.4.15...v0.4.16