Plan: Lower minimum transect spacing to 0.3 meters

[DonLakeFlyer]

Fix #13403

[Copilot]

Pull Request Overview

This PR lowers the minimum transect spacing threshold from 0.5 meters to 0.3 meters in survey planning functionality to provide more granular control over mission planning.

• Changed minimum transect spacing validation from 0.5m to 0.3m
• Updated corresponding comments to reflect the new minimum value

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/MissionManager/SurveyComplexItem.cc	Updated minimum grid spacing threshold and comment
src/MissionManager/CorridorScanComplexItem.cc	Updated minimum transect spacing threshold and comment

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[HTRamsey]

Not that it matters that much but I would put static constexpr double _minimumSpacing = 0.3 in TransectStyleComplexItem

[DonLakeFlyer]

Yeah, makes sense

[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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