fix: apply geometry transforms after orientation rotation

[TomasVSantos]

Description

Fixes #1603. Geometry transforms now respect the image’s current orientation, so Vertical and Horizontal adjustments consistently operate on the displayed image axes and move in the expected direction.

Type of Change

• Bug fix
• New feature
• Breaking change
• Performance improvement
• Code refactoring
• Documentation update
• UI/UX improvement
• Build/CI or Dependency update

Changes Made

• Apply image orientation and flips before geometry transforms.
• Keep Vertical and Horizontal adjustments screen-relative across all image orientations.
• Align the main render pipeline, transform preview, uncropped preview, and thumbnail generation.
• Update inverse mask and point transformations to match the new processing order.

Screenshots/Videos

Not applicable.

Testing

• These changes were tested locally by a human and confirmed to work.
• I haven't added any automated tests to the code because the codebase currently lacks a test suite.

Test Configuration:

• OS: macOS 26.3.1
• Hardware: Apple Silicon (arm64)

Checklist

• My code follows the project's code style
• I haven't added unnecessary AI-generated code comments
• My changes generate no new warnings or errors

Additional Notes

The repository’s TypeScript typecheck reports unrelated pre-existing errors in unchanged files.

AI Disclaimer:

Please state the involvement of AI in this PR:

• This PR is created by an AI agent
• This PR is mostly AI-generated but edited/merged together by a human
• This PR was handwritten with AI assistance (spell check, logic suggestions, error resolving)
• This PR contains only blood, sweat, and coffee (AI-free)