fix(gameplay): use AI-generated world companions

Co-authored-by: multica-agent <github@multica.ai>

README.md

@@ -58,7 +58,7 @@ If the worker reports `POST /rest/v1/rpc/claim_ai_job 404` and `/rest/v1/profile
 1. Click **Enter the Alpha** to open registration. Every account requires a display name, email, password, and 13+ confirmation. Existing users sign in with email/password; forgotten passwords use the email recovery flow.
 2. Create a world in the dynamic coauthor chat. Unfinished conversations and generated drafts appear on the dashboard and resume after a reload.
 3. Review every starting-world field, including the owner-only hidden threat, then confirm it.
-4. A new campaign starts immediately with an owner-controlled hero and a persistent AI companion. Additional players create a human character manually or ask the coauthor for an editable draft; owners can add more AI companions the same way.
+4. During world creation, the coauthor also creates three editable, universe-specific AI companions. A new campaign starts immediately with those companions and an owner-controlled hero. Additional players create a human character manually or ask the coauthor for an editable draft; owners can add more AI companions the same way.
 5. The owner creates an expiring private invite link. Signed-in email users join through `/join/:token`.
 6. Players save actions and mark them ready. The final ready action queues the round automatically; the owner can also continue without waiting.
 7. The worker resolves server-owned rolls and state, publishes narration, and opens the next round. Visible campaign tabs synchronize every two seconds and immediately when the tab regains focus.