feat(gitea): add gogit variant tagger

Tag assets with "-gogit-" in the filename as the "gogit" variant.
These use a pure-Go Git backend instead of the default C Git library.

internal/classifypkg/classifypkg.go

@@ -19,6 +19,7 @@ import (
 	"github.com/webinstall/webi-installers/internal/releases/bun"
 	"github.com/webinstall/webi-installers/internal/releases/chromedist"
 	"github.com/webinstall/webi-installers/internal/releases/fish"
+	"github.com/webinstall/webi-installers/internal/releases/gitea"
 	"github.com/webinstall/webi-installers/internal/releases/flutterdist"
 	"github.com/webinstall/webi-installers/internal/releases/git"
 	"github.com/webinstall/webi-installers/internal/releases/golang"
@@ -94,6 +95,8 @@ func TagVariants(pkg string, assets []storage.Asset) {
 		fish.TagVariants(assets)
 	case "git":
 		git.TagVariants(assets)
+	case "gitea":
+		gitea.TagVariants(assets)
 	case "lsd":
 		lsd.TagVariants(assets)
 	case "node":

internal/releases/gitea/variants.go

@@ -0,0 +1,25 @@
+// Package gitea provides variant tagging for Gitea releases.
+//
+// Gitea publishes "gogit" builds that use an alternative pure-Go Git
+// backend instead of the default C Git library.
+package gitea
+
+import (
+	"strings"
+
+	"github.com/webinstall/webi-installers/internal/storage"
+)
+
+// TagVariants tags gitea-specific build variants.
+//
+// Files containing "-gogit-" in the filename are tagged with the "gogit"
+// variant. These use a pure-Go Git backend rather than the default C Git
+// library.
+func TagVariants(assets []storage.Asset) {
+	for i := range assets {
+		lower := strings.ToLower(assets[i].Filename)
+		if strings.Contains(lower, "gogit") {
+			assets[i].Variants = append(assets[i].Variants, "gogit")
+		}
+	}
+}