sdlc.cc Claude Code gateway installer

Drag the app to Applications, then open it. The native macOS setup asks for the
gateway and your messages-scoped sk_sdlc_* key. After setup, the shield remains
in the menu bar for status, verification, and settings. Fully quit and reopen
Claude Code once so it inherits the protected gateway.

Official macOS customer artifact is the .dmg when built on a Mac (hdiutil).
CI on Linux ships the same .app inside a .zip. Not Developer ID signed /
notarized — signed DMG remains Planned.
