feat:初版

apps/api/app/schemas/__init__.py

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+from .translate import TranslateRequest, TranslationStyle
+from .response import TranslateResponse, TranslateChunk, TranslateMeta, TranslateDone
+
+__all__ = [
+    "TranslateRequest",
+    "TranslationStyle",
+    "TranslateResponse",
+    "TranslateChunk",
+    "TranslateMeta",
+    "TranslateDone",
+]

apps/api/app/schemas/response.py

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+class TranslateResponse(BaseModel):
+    source_lang: str
+    target_lang: str
+    translation: str
+    model: str
+    cached: bool = False
+    usage: dict | None = None
+
+
+class TranslateChunk(BaseModel):
+    delta: str
+
+
+class TranslateMeta(BaseModel):
+    source_lang: str
+    target_lang: str
+    cached: bool = False
+
+
+class TranslateDone(BaseModel):
+    translation: str
+    usage: dict | None = None

apps/api/app/schemas/translate.py

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+from pydantic import BaseModel, Field
+from enum import Enum
+
+
+class TranslationStyle(str, Enum):
+    literal = "literal"
+    fluent = "fluent"
+    casual = "casual"
+
+
+class TranslateRequest(BaseModel):
+    source_text: str = Field(..., min_length=1, max_length=10000)
+    source_lang: str = Field(default="auto", max_length=10)
+    target_lang: str = Field(..., max_length=10)
+    style: TranslationStyle = TranslationStyle.literal
+    glossary_id: str | None = None
+    format: str = "text"