Prepare v1.4.4 runtime efficiency release

[PrimeBuild-pc]

Summary

• bump application, installer, package, build, and analysis metadata to 1.4.4
• update changelog and release notes with measured runtime improvements
• ignore local performance planning Markdown instead of adding a new version-specific Markdown file

Validation

• clean restore/build succeeded with 0 warnings and 0 errors
• 581/581 tests passed
• NuGet vulnerability audit found no vulnerable packages
• portable and installer builds succeeded
• portable ZIP contains all 89 power plans and no diagnostics
• executable reports FileVersion 1.4.4.0

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Codecov Report

✅ All modified and coverable lines are covered by tests.

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