feat(repairs): add status timeline and public link preparation

backend/hermes/app/schemas/repair.py

@@ -129,6 +129,8 @@ class RepairStatusHistoryResponse(BaseModel):
     new_status: str
     note: str | None
     actor_user_id: int | None
+    actor_username: str = ""
+    actor_display_name: str = ""
     created_at: datetime
 
     model_config = ConfigDict(from_attributes=True)
@@ -160,3 +162,61 @@ class RepairIntakeResponse(BaseModel):
     repair_number: str
     status: RepairStatus
     message: str
+
+
+class RepairPublicLinkResponse(BaseModel):
+    is_active: bool
+    token_hint: str | None = None
+    expires_at: datetime | None = None
+    last_used_at: datetime | None = None
+    created_at: datetime | None = None
+    revoked_at: datetime | None = None
+    public_status_path: str | None = None
+
+
+class RepairPublicLinkCreateResponse(RepairPublicLinkResponse):
+    token: str
+    public_status_path: str
+
+
+class RepairPublicStatusHistoryItem(BaseModel):
+    status: RepairStatus
+    status_label: str
+    created_at: datetime
+
+
+class RepairPublicStatusResponse(BaseModel):
+    repair_number: str
+    public_status_label: str
+    device_manufacturer: str
+    device_model: str
+    status_history_public: list[RepairPublicStatusHistoryItem]
+    updated_at: datetime
+
+
+class RepairNotificationTemplateResponse(BaseModel):
+    event_type: str
+    status: RepairStatus | None = None
+    subject: str
+    text: str
+    html: str | None = None
+
+
+class RepairNotificationEventResponse(BaseModel):
+    id: int
+    repair_id: int
+    event_type: str
+    channel: str
+    recipient: str
+    subject: str
+    status: str
+    error_message: str | None
+    created_at: datetime
+    sent_at: datetime | None
+
+    model_config = ConfigDict(from_attributes=True)
+
+
+class RepairNotificationOverviewResponse(BaseModel):
+    templates: list[RepairNotificationTemplateResponse]
+    events: list[RepairNotificationEventResponse]