Features:
- Native Host Control reboot handling
- App Store UI for browsing and installing apps from Rinkhals.Apps
- Main menu redesigned as 2x2 grid with UI fixes and PWM musical tones for startup, failure, and tool script completion events
- Hostname advertisement application (10-hostname-dns), enabled by default
- KS1M 2.6.9.3 firmware support
- KS1 2.7.0.9 firmware support documented

Fixes:
- Partial MMU status updates now handled correctly
- MMU recover state sync corrected
- EXCLUDE_OBJECT routed to GoKlipper native exclude_object/set_objects, exclusions now execute at runtime (#166)
- udhcp interface autodetection and NameError resolved
- App Store missing back/refresh icons restored, Installed pill replaced with plain label
- Dead beep() function definitions removed from tool scripts

Documentation and housekeeping:
- README reorganized with general information section and community link
- Kobra X printer documentation added and improved
- Kobra S1 Max firmware list updated to include 2.6.6
- Monitor documentation clarifies .env file location (#268)
- Kobra X README status clarified
- Local agent definitions added to ignore list
- Contributor thanks moved into README.md