feat: add trusted ticket intake backend

backend/apps/tickets/draft_schemas.py

@@ -0,0 +1,66 @@
+from datetime import datetime
+
+from ninja import Schema
+
+
+class TicketDraftCreateIn(Schema):
+    source_text: str = ""
+
+
+class TicketDraftPatchIn(Schema):
+    expected_revision: int
+    fields: dict
+
+
+class TicketDraftActionIn(Schema):
+    expected_revision: int
+
+
+class TicketDraftAnswerIn(Schema):
+    expected_revision: int
+    answer: str
+    question: str = ""
+
+
+class TicketDraftImageOut(Schema):
+    id: str
+    file_name: str
+    mime_type: str
+    file_size: int
+    status: str
+
+
+class TicketDraftMessageOut(Schema):
+    role: str
+    content: str
+    round_number: int
+    created_at: datetime
+
+
+class TicketDraftOut(Schema):
+    public_id: str
+    status: str
+    revision: int
+    source_text: str
+    fields: dict
+    last_ai_fields: dict
+    missing_fields: list[str]
+    questions: list[str]
+    guided_rounds: int
+    agent_run_public_id: str | None = None
+    images: list[TicketDraftImageOut]
+    messages: list[TicketDraftMessageOut]
+    decision: str
+    error_code: str
+    error_message: str
+    confirmed_ticket: dict | None = None
+    created_at: datetime
+    updated_at: datetime
+    expires_at: datetime
+
+
+class TicketDraftAvailabilityOut(Schema):
+    available: bool
+    reason: str
+    vision_available: bool
+    vision_reason: str