refactor(backend): update API routes and service layer

- Update agent router/service/repository with new endpoints
- Update auth routes with phone-based authentication
- Update users service with new phone lookup
- Update schedule_items with new schemas
- Update message schemas with visibility support
- Update settings with new automation scheduler config
- Update CLI with new commands
- Update tests to match new API contracts

backend/tests/unit/v1/friendships/test_schemas.py

@@ -1,11 +1,13 @@
 from __future__ import annotations
 
-import pytest
 from datetime import datetime
 from uuid import uuid4
 
+import pytest
+from pydantic import ValidationError
+from schemas.user.context import UserContext
+
 from v1.friendships.schemas import (
-    UserBasicInfo,
     FriendRequestCreate,
     FriendRequestResponse,
     FriendResponse,
@@ -13,16 +15,16 @@ from v1.friendships.schemas import (
 )
 
 
-def test_user_basic_info_maps_fields() -> None:
-    user = UserBasicInfo(id="user-1", username="alice", avatar_url=None)
+def test_user_context_maps_fields() -> None:
+    user = UserContext(id="user-1", username="alice", avatar_url=None)
 
     assert user.id == "user-1"
     assert user.username == "alice"
     assert user.avatar_url is None
 
 
-def test_user_basic_info_with_avatar() -> None:
-    user = UserBasicInfo(
+def test_user_context_with_avatar() -> None:
+    user = UserContext(
         id="user-2", username="bob", avatar_url="https://example.com/avatar.png"
     )
 
@@ -49,13 +51,13 @@ def test_friend_request_create_without_content() -> None:
 
 def test_friend_request_create_content_max_length() -> None:
     target_id = uuid4()
-    with pytest.raises(Exception):
+    with pytest.raises(ValidationError):
         FriendRequestCreate(target_user_id=target_id, content="x" * 201)
 
 
 def test_friend_request_response_maps_fields() -> None:
-    sender = UserBasicInfo(id="user-1", username="alice", avatar_url=None)
-    recipient = UserBasicInfo(id="user-2", username="bob", avatar_url=None)
+    sender = UserContext(id="user-1", username="alice", avatar_url=None)
+    recipient = UserContext(id="user-2", username="bob", avatar_url=None)
     request_id = uuid4()
     created = datetime(2026, 1, 15, 10, 30, 0)
 
@@ -63,7 +65,7 @@ def test_friend_request_response_maps_fields() -> None:
         id=request_id,
         sender=sender,
         recipient=recipient,
-        content="Hello!",
+        content={"text": "Hello!"},
         status="pending",
         created_at=created,
     )
@@ -76,7 +78,7 @@ def test_friend_request_response_maps_fields() -> None:
 
 
 def test_friend_response_maps_fields() -> None:
-    friend_user = UserBasicInfo(id="user-2", username="bob", avatar_url=None)
+    friend_user = UserContext(id="user-2", username="bob", avatar_url=None)
     request_id = uuid4()
     created = datetime(2026, 1, 15, 10, 30, 0)
     accepted = datetime(2026, 1, 16, 12, 0, 0)
@@ -96,7 +98,7 @@ def test_friend_response_maps_fields() -> None:
 
 
 def test_friend_response_accepted_at_optional() -> None:
-    friend_user = UserBasicInfo(id="user-2", username="bob", avatar_url=None)
+    friend_user = UserContext(id="user-2", username="bob", avatar_url=None)
     request_id = uuid4()
     created = datetime(2026, 1, 15, 10, 30, 0)