feat(i18n): localize admin users backbone

tests/unit/actions/user.messages.test.ts

@@ -0,0 +1,45 @@
+import { describe, expect, it } from "vitest"
+
+import { localizeUserFieldErrors } from "@/actions/user.messages"
+import { es } from "@/i18n/dictionaries/es"
+
+const actionCopy = es.admin.users.actions
+
+describe("user action message localization", () => {
+  it("localizes all 6 known use-case error strings to dictionary keys", () => {
+    expect(
+      localizeUserFieldErrors(
+        {
+          username: ["Username already exists"],
+          email: ["Email already exists"],
+          id: [
+            "User not found",
+            "Cannot remove access from the last active administrator",
+            "You cannot remove your own administrator access",
+            "You cannot deactivate your own user",
+          ],
+        },
+        actionCopy,
+      ),
+    ).toEqual({
+      username: [actionCopy.duplicateUsername],
+      email: [actionCopy.duplicateEmail],
+      id: [
+        actionCopy.notFound,
+        actionCopy.lastActiveAdmin,
+        actionCopy.selfAdminAccess,
+        actionCopy.selfDeactivate,
+      ],
+    })
+  })
+
+  it("keeps unknown messages unchanged", () => {
+    expect(
+      localizeUserFieldErrors({ id: ["Unexpected user issue"] }, actionCopy),
+    ).toEqual({ id: ["Unexpected user issue"] })
+  })
+
+  it("returns undefined for undefined input", () => {
+    expect(localizeUserFieldErrors(undefined, actionCopy)).toBeUndefined()
+  })
+})