fix(schemas): use z.union + transform for teamId empty string handling

src/schemas/person.schema.ts

@@ -22,14 +22,11 @@ function buildPersonBaseSchema(copy: PersonSchemaCopy) {
     lastName: z.string().min(1, {
       error: copy.lastNameRequired,
     }),
-    teamId: z.preprocess(
-      (val) => (val === "" ? null : val),
-      z
-        .string()
-        .uuid({ error: copy.teamIdInvalid })
-        .optional()
-        .nullable(),
-    ),
+    teamId: z
+      .union([z.string().uuid({ error: copy.teamIdInvalid }), z.literal("")])
+      .transform((val) => (val === "" ? null : val))
+      .nullable()
+      .optional(),
     email: z.string().optional().nullable(),
     phone: z.string().optional().nullable(),
     userId: z

src/schemas/user.schema.ts

@@ -92,14 +92,14 @@ export function buildUnifiedUpdateSchema(copy: UnifiedSchemaCopy) {
       id: z.string().nonempty(copy.idRequired),
       firstName: z.string().trim().min(1, { error: copy.firstNameRequired }),
       lastName: z.string().trim().min(1, { error: copy.lastNameRequired }),
-      teamId: z.preprocess(
-        (val) => (val === "" ? null : val),
-        z
-          .string()
-          .uuid({ error: copy.teamIdInvalid })
-          .optional()
-          .nullable(),
-      ),
+      teamId: z
+        .union([
+          z.string().uuid({ error: copy.teamIdInvalid }),
+          z.literal(""),
+        ])
+        .transform((val) => (val === "" ? null : val))
+        .nullable()
+        .optional(),
       email: z
         .union([z.email({ error: copy.emailInvalid }), z.literal(""), z.null()])
         .optional(),
@@ -133,14 +133,14 @@ export function buildUnifiedCreateSchema(copy: UnifiedSchemaCopy) {
     .object({
       firstName: z.string().trim().min(1, { error: copy.firstNameRequired }),
       lastName: z.string().trim().min(1, { error: copy.lastNameRequired }),
-      teamId: z.preprocess(
-        (val) => (val === "" ? null : val),
-        z
-          .string()
-          .uuid({ error: copy.teamIdInvalid })
-          .optional()
-          .nullable(),
-      ),
+      teamId: z
+        .union([
+          z.string().uuid({ error: copy.teamIdInvalid }),
+          z.literal(""),
+        ])
+        .transform((val) => (val === "" ? null : val))
+        .nullable()
+        .optional(),
       email: z.email({ error: copy.emailInvalid }),
       phone: z.string().optional().nullable(),
       role: unifiedFormRoleSchema,