refactor: unify data preparations and research input snapshots

backend/app/catalog/contracts.py

@@ -3,7 +3,7 @@
 from datetime import datetime, timezone
 from typing import Annotated, Literal
 
-from pydantic import AfterValidator, BaseModel, Field, model_validator
+from pydantic import AfterValidator, BaseModel, Field
 
 from ..schemas import Contract
 
@@ -54,20 +54,6 @@ class NoteInput(Contract):
     version: int = Field(ge=1)
 
 
-class InputPreparation(Contract):
-    scope: Scope
-    dataset_id: str = Field(min_length=1, max_length=200)
-    collection_version: str
-    selection: Literal["all", "explicit"] = "all"
-    excluded_ids: list[str] = Field(default_factory=list, max_length=100000)
-
-    @model_validator(mode="after")
-    def valid_selection(self):
-        if self.selection == "all" and self.excluded_ids:
-            raise ValueError("全部字段不能同时提供排除项")
-        return self
-
-
 class NoteOutput(BaseModel):
     note: str
     version: int
@@ -107,18 +93,6 @@ class CatalogPage(BaseModel):
     field_types: list[str] = Field(default_factory=list)
 
 
-class InputOutput(BaseModel):
-    id: str
-    status: Literal["draft"] = "draft"
-    scope: Scope
-    dataset_id: str
-    collection_version: str
-    selection: str
-    field_ids: list[str]
-    field_types: dict[str, str | None]
-    created_at: UTCTimestamp
-
-
 class CollectionOutput(BaseModel):
     collection_version: str | None
     field_ids: list[str]