Suya OCR API — vLLM-backed, OpenAI-compatible OCR service

FastAPI service wrapping the Surya-OCR-2 model (datalab-to) served through vLLM:
legacy /v1/api/ai/* endpoints, an OpenAI-compatible /v1/chat/completions endpoint,
a coalescing request batcher, a local OCR CLI, Docker packaging, multilingual
example outputs, and quantization/concurrency benchmarks.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

surya/detection/schema.py

@@ -0,0 +1,12 @@
+from typing import List, Optional, Any
+
+from pydantic import BaseModel
+
+from surya.common.polygon import PolygonBox
+
+
+class TextDetectionResult(BaseModel):
+    bboxes: List[PolygonBox]
+    heatmap: Optional[Any]
+    affinity_map: Optional[Any]
+    image_bbox: List[float]