fix: add possible nullish field and use strings for profile request param

Author: michaldrabik

projects/api/src/contracts/_internal/response/progressResponseSchema.ts

@@ -5,7 +5,7 @@ import { statsResponseSchema } from './statsResponseSchema.ts';
 export const progressResponseSchema = z.object({
   aired: z.number().int(),
   completed: z.number().int(),
-  last_watched_at: z.string().datetime(),
+  last_watched_at: z.string().datetime().nullish(),
   reset_at: z.null(),
   next_episode: episodeResponseSchema,
   last_episode: episodeResponseSchema.or(z.null()),

projects/api/src/contracts/users/_internal/request/profileParamsSchema.ts

@@ -1,7 +1,7 @@
 import { z } from '../../../_internal/z.ts';
 
 export const profileParamsSchema = z.object({
-  id: z.enum(['me']).or(z.string()).openapi({
+  id: z.string().openapi({
     description:
       `The slug that identifies the user, or "me" for the authenticated user.`,
   }),