Remove Ukraine 868MHz region code

[sashko]

Ukrainian legislation[1] was harmonised with the EU's, and UA_868 is now obsolete as it is identical to the EU_868, so it was removed from the firmware.[2]

[1] http://zakon.rada.gov.ua/laws/show/262-2026-%D0%BF
[2] meshtastic/firmware#10994

Summary by CodeRabbit

• Bug Fixes
  • Removed the unavailable Ukraine 868 MHz regional channel option.
  • Updated the regional channel list to prevent selection of the unsupported frequency range.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: e0a9ea6f-8a86-42e3-bc58-bee55cbe3dcb

📥 Commits

Reviewing files that changed from the base of the PR and between 0da4c78 and 62e4bd4.

📒 Files selected for processing (1)

• core/model/src/commonMain/kotlin/org/meshtastic/core/model/ChannelOption.kt

💤 Files with no reviewable changes (1)

• core/model/src/commonMain/kotlin/org/meshtastic/core/model/ChannelOption.kt

---

📝 Walkthrough

Walkthrough

The RegionInfo enum removes the UA_868 Ukraine 868MHz entry and its associated frequency range metadata.

Changes

Region enum update

Layer / File(s)	Summary
Remove UA_868 enum constant core/model/src/commonMain/kotlin/org/meshtastic/core/model/ChannelOption.kt	Removes the Ukraine 868MHz region constant from RegionInfo, leaving MY_433 as the next entry.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: removing the Ukraine 868MHz region code.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}