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

frontend/src/api/queries/lfs.ts

@@ -0,0 +1,31 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
+import { z } from 'zod'
+import { api } from '../client'
+
+const lfsSettingsSchema = z.object({
+  enabled: z.boolean(),
+  lockingEnabled: z.boolean(),
+  maxFileSizeMB: z.number(),
+})
+
+export type LFSSettings = z.infer<typeof lfsSettingsSchema>
+
+export function useLFSSettings(owner: string, repo: string) {
+  return useQuery({
+    queryKey: ['repos', owner, repo, 'lfs-settings'],
+    queryFn: () =>
+      api.get<LFSSettings>(`/api/v1/repos/${owner}/${repo}/lfs-settings`, lfsSettingsSchema),
+    enabled: Boolean(owner && repo),
+  })
+}
+
+export function useUpdateLFSSettings(owner: string, repo: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (body: Partial<LFSSettings>) =>
+      api.put<LFSSettings>(`/api/v1/repos/${owner}/${repo}/lfs-settings`, lfsSettingsSchema, body),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['repos', owner, repo, 'lfs-settings'] })
+    },
+  })
+}