Ad-hoc sign the macOS app

[sangonz193]

The macOS build is rejected on Apple silicon with "Git Nav is damaged and can't be opened", and the first-launch steps in the readme do not apply to it, because that dialog offers no way through.

The executable carries the signature the linker leaves behind, and the bundle assembled around it is never signed, so it has no Contents/_CodeSignature/CodeResources:

CodeDirectory ... flags=0x20002(adhoc,linker-signed)
Git Nav.app: code has no resources but signature indicates they must be present

Signing with Tauri's ad-hoc pseudo-identity signs the bundle. The app is still unidentified, so macOS still asks for it to be allowed through Privacy & Security, which is what the install instructions describe:

CodeDirectory ... flags=0x10002(adhoc,runtime)
Git Nav.app: valid on disk
Git Nav.app: satisfies its Designated Requirement

Verified against a bundle built from this change: quarantined, Gatekeeper now rejects it as unnotarized rather than as malformed. The updater artifact is packed from the same bundle, so it carries the signature too.

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1 Skipped Deployment

Project	Deployment	Actions	Updated
git-nav-site	Skipped		Sep 5, 2026 5:44am UTC