fix: pass HOMEBREW_TAP_GITHUB_TOKEN to GoReleaser; fix archive format deprecation

- release.yml: add HOMEBREW_TAP_GITHUB_TOKEN env var so GoReleaser can
  push the Homebrew formula to the tap repo
- .goreleaser.yaml: format → formats (GoReleaser v2 deprecation fix)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: Panda

.github/workflows/release.yml

@@ -26,3 +26,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GITHUB_OWNER: MyAgentHubs
+          HOMEBREW_TAP_GITHUB_TOKEN: ${{ secrets.HOMEBREW_TAP_GITHUB_TOKEN }}

.goreleaser.yaml

@@ -16,10 +16,10 @@ builds:
       - -X main.version={{.Version}}
 
 archives:
-  - format: tar.gz
+  - formats: [tar.gz]
     format_overrides:
       - goos: windows
-        format: zip
+        formats: [zip]
     name_template: "aimemo_{{.Version}}_{{.Os}}_{{.Arch}}"
 
 brews: