Nz sf region

[NomDeTom]

Adds a new region specifically for New Zealand to allow the ShortFast preset generally in use there to be the "default" from the start. ANZ is still available for legacy users.

Checklist before merging

• All top level messages commented
• All enum members have unique descriptions

Summary by CodeRabbit

• New Features
  • Added support for the NZ_924 LoRa region option, allowing devices to be configured for this regional frequency band.

[CLAassistant]

All committers have signed the CLA.

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 2acb702e-a8c8-4138-ac14-ac0bc1e13194

📥 Commits

Reviewing files that changed from the base of the PR and between 341b5af and 1153d23.

📒 Files selected for processing (2)

• meshtastic/config.proto
• meshtastic/mesh.options

📝 Walkthrough

Walkthrough

Adds the NZ_924 = 38 region value to the LoRaConfig.RegionCode enum in meshtastic/config.proto.

Changes

LoRa region support

Layer / File(s)	Summary
Add NZ_924 region code meshtastic/config.proto	Adds and documents NZ_924 = 38 after ITU2_125CM = 37 in the RegionCode enum.

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

Suggested reviewers: thebentern, jp-bennett

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and refers to the new New Zealand region added by this change.
Description check	✅ Passed	The description explains the New Zealand region addition and includes the checklist, though the related issue link is omitted.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@meshtastic/config.proto`:
- Around line 993-998: Increase the max_count for
LoRaRegionPresetMap.region_groups in mesh.options from 38 to 39 to accommodate
RegionCode.NZ_924, then regenerate the protobuf bindings.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 489e2958-1f85-4bc1-be6d-625d60b197a4

📥 Commits

Reviewing files that changed from the base of the PR and between da2fc41 and 341b5af.

📒 Files selected for processing (1)

• meshtastic/config.proto