fix: use brew installer for imsg skill

CHANGELOG.md

@@ -28,6 +28,7 @@
 - Tests: harden wizard E2E flows for reset, providers, skills, and remote non-interactive runs.
 
 ### Fixes
+- Skills: switch imsg installer to brew tap formula.
 - macOS codesign: skip hardened runtime for ad-hoc signing and avoid empty options args (#70) — thanks @petter-b
 - macOS packaging: move rpath config into swift build for reliability (#69) — thanks @petter-b
 - macOS: prioritize main bundle for device resources to prevent crash (#73) — thanks @petter-b

skills/imsg/SKILL.md

@@ -2,7 +2,7 @@
 name: imsg
 description: iMessage/SMS CLI for listing chats, history, watch, and sending.
 homepage: https://imsg.to
-metadata: {"clawdis":{"emoji":"📨","requires":{"bins":["imsg"]},"install":[{"id":"go","kind":"go","module":"github.com/steipete/imsg/cmd/imsg@latest","bins":["imsg"],"label":"Install imsg (go)"}]}}
+metadata: {"clawdis":{"emoji":"📨","requires":{"bins":["imsg"]},"install":[{"id":"brew","kind":"brew","formula":"steipete/tap/imsg","bins":["imsg"],"label":"Install imsg (brew)"}]}}
 ---
 
 # imsg