Add web auth, infinite-scroll, agent admission and review fixes across agent/server/web

server/monlet_server/schemas.py

@@ -1,7 +1,6 @@
 import re
 from datetime import datetime
 from typing import Literal
-from uuid import UUID
 
 from pydantic import BaseModel, ConfigDict, Field, field_validator
 
@@ -39,6 +38,7 @@ ErrorCode = Literal[
     "internal",
     "not_ready",
     "agent_blocked",
+    "agent_not_accepted",
 ]
 
 
@@ -233,12 +233,6 @@ class OutboxPage(PageEnvelope):
     items: list[NotificationOutboxItem]
 
 
-class UUIDStr(BaseModel):
-    """Helper to validate generated UUIDs."""
-
-    value: UUID
-
-
 class SystemSummaryResponse(BaseModel):
     agents_online: int
     agents_offline: int