第一次提交

app/services/ocr/vlm_engine.py

@@ -0,0 +1,15 @@
+"""多模态大模型 OCR 引擎：直接看图转写题目为 Markdown。"""
+from app.services.llm.client import LLMClient
+from app.services.llm.prompts import VLM_OCR_SYSTEM, VLM_OCR_USER
+from app.services.ocr.base import OcrResult
+
+
+class VlmOcrEngine:
+    def __init__(self, llm: LLMClient):
+        self._llm = llm
+
+    async def recognize(self, image_bytes: bytes, mime: str) -> OcrResult:
+        result = await self._llm.chat_vision(
+            VLM_OCR_SYSTEM, VLM_OCR_USER, image_bytes, mime=mime
+        )
+        return OcrResult(markdown=result.content, confidence=1.0, engine="vlm")