onit-sidekick 3.0 (new cask)

[Niduank]

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After making any changes to a cask, existing or new, verify:

• The submission is for a stable version or documented exception.
• brew audit --cask --online <cask> is error-free.
• brew style --fix <cask> reports no offenses.

Additionally, if adding a new cask:

• Named the cask according to the token reference.
• Checked the cask was not already refused.
• brew audit --cask --new <cask> worked successfully.
• HOMEBREW_NO_INSTALL_FROM_API=1 brew install --cask <cask> worked successfully.
• brew uninstall --cask <cask> worked successfully.

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• AI was used to generate or assist with generating this PR. Please specify below how you used AI to help you, and what steps you have taken to manually verify the changes, including zap stanza paths.

An AI assistant helped author this onit-sidekick cask and open the PR. Manual verification performed:

• The app (SideKick) is Developer ID–signed and notarized; Gatekeeper acceptance confirmed (spctl -a → accepted).
• brew audit --cask --new --online onit-sidekick — error-free.
• brew style onit-sidekick — no offenses.
• HOMEBREW_NO_INSTALL_FROM_API=1 brew install --cask onit-sidekick and brew uninstall --cask onit-sidekick — both succeeded locally.
• zap paths were derived from the app's bundle identifier inc.synth.onit.sidekick (Caches, HTTPStorages, Preferences, Saved Application State) and reviewed manually.

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[bevanjkay]

Suggested change

	desc "AI chat panel that docks next to your active window with on-screen context"
	desc "AI chat panel"