chore(main): release 0.51.0

[github-actions]

🤖 I have created a release beep boop

0.51.0 (2026-01-01)

Features

• (capture-window): rename from capture-unity-window and add MatchMode parameter (#504) (1614fc5)
• ui: migrate McpEditorWindow from IMGUI to UI Toolkit (#503) (c901024)

Bug Fixes

• server: enable auto-start without opening EditorWindow (#500) (5766bdb)
• update qs to 6.14.1 to fix DoS vulnerability (#501) (04a9adc)

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[github-actions]

🤖 Created releases:

• v0.51.0

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