Git LFS section is live with:

Enable LFS toggle — turns LFS on/off for the repo; all other controls dim when disabled
File locking toggle — enables the LFS locking protocol for binary assets
Maximum file size — optional per-file size cap in MB (blank = unlimited)
Info callout linking to the git-lfs client install page and noting the .gitattributes requirement

internal/models/lfs.go

@@ -0,0 +1,9 @@
+package models
+
+type RepoLFSSettings struct {
+	ID             int64 `xorm:"'id' pk autoincr"`
+	RepoID         int64 `xorm:"'repo_id' notnull unique"`
+	Enabled        bool  `xorm:"'enabled' default false"`
+	LockingEnabled bool  `xorm:"'locking_enabled' default true"`
+	MaxFileSizeMB  int64 `xorm:"'max_file_size_mb' default 0"` // 0 = unlimited
+}

internal/models/migrations/001_init.go

@@ -28,5 +28,8 @@ func Run(engine *xorm.Engine) error {
 	if err := Run005(engine); err != nil {
 		return err
 	}
-	return Run006(engine)
+	if err := Run006(engine); err != nil {
+		return err
+	}
+	return Run007(engine)
 }

internal/models/migrations/007_lfs.go

@@ -0,0 +1,10 @@
+package migrations
+
+import (
+	"github.com/forgeo/forgebucket/internal/models"
+	"xorm.io/xorm"
+)
+
+func Run007(engine *xorm.Engine) error {
+	return engine.Sync2(&models.RepoLFSSettings{})
+}