init: new structure + fix lint errors

cpv3/modules/captions/service.py

@@ -0,0 +1,31 @@
+from __future__ import annotations
+
+import httpx
+
+from cpv3.infrastructure.settings import get_settings
+from cpv3.modules.transcription.schemas import Document
+
+
+async def generate_captions(
+    *, video_s3_path: str, folder: str, transcription: Document
+) -> str:
+    """Generate captions for a video using the Remotion service."""
+    settings = get_settings()
+
+    payload = {
+        "folder": folder,
+        "videoSrc": video_s3_path,
+        "transcription": transcription.model_dump(),
+    }
+
+    async with httpx.AsyncClient(timeout=300) as client:
+        resp = await client.post(
+            f"{settings.remotion_service_url}/api/render", json=payload
+        )
+        resp.raise_for_status()
+        data = resp.json()
+
+    if not isinstance(data, dict) or "output" not in data:
+        raise RuntimeError("Unexpected response from remotion service")
+
+    return str(data["output"])