feat(media): default to s3 with local upload fallback

apps/admin/src/lib/media/storage.test.ts

@@ -3,8 +3,8 @@ import { describe, expect, it } from "vitest"
 import { resolveMediaStorageProvider } from "@/lib/media/storage"
 
 describe("resolveMediaStorageProvider", () => {
-  it("defaults to local when unset", () => {
-    expect(resolveMediaStorageProvider(undefined)).toBe("local")
+  it("defaults to s3 when unset", () => {
+    expect(resolveMediaStorageProvider(undefined)).toBe("s3")
   })
 
   it("resolves s3", () => {
@@ -12,7 +12,12 @@ describe("resolveMediaStorageProvider", () => {
     expect(resolveMediaStorageProvider("S3")).toBe("s3")
   })
 
-  it("falls back to local for unknown values", () => {
-    expect(resolveMediaStorageProvider("foo")).toBe("local")
+  it("resolves local explicitly", () => {
+    expect(resolveMediaStorageProvider("local")).toBe("local")
+    expect(resolveMediaStorageProvider("LOCAL")).toBe("local")
+  })
+
+  it("falls back to s3 for unknown values", () => {
+    expect(resolveMediaStorageProvider("foo")).toBe("s3")
   })
 })