fix: use window.location.origin for transcribe endpoint

app.py

@@ -10,10 +10,12 @@ from faster_whisper import WhisperModel
 import shutil
 import tempfile
 from pathlib import Path
+import asyncio
+from concurrent.futures import ThreadPoolExecutor
+from functools import partial
 
 app = FastAPI()
 
-# CORS
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["*"],
@@ -21,16 +23,16 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-# Static files
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
 print("Loading faster-whisper-tiny...")
 model = WhisperModel(
     "tiny",             
     device="cpu",
-    compute_type="int8"  # int8 quantization
-    )
+    compute_type="int8"
+)
 
+executor = ThreadPoolExecutor(max_workers=1)
 print("Model ready")
 
 @app.get("/", response_class=HTMLResponse)
@@ -39,18 +41,21 @@ async def root():
         return f.read()
 
 @app.post("/transcribe")
-def transcribe_audio(file: UploadFile = File(...)):  # ← no async
+async def transcribe_audio(file: UploadFile = File(...)):
     try:
-        # Use the proven sync pattern
         suffix = Path(file.filename).suffix
         with tempfile.NamedTemporaryFile(delete=False, suffix=suffix) as tmp:
             shutil.copyfileobj(file.file, tmp) 
             tmp_path = tmp.name
         
-        result = model.transcribe(tmp_path, language="ru")
-        text = result["text"].strip()
+        loop = asyncio.get_event_loop()
+        result = await loop.run_in_executor(
+            executor,
+            partial(model.transcribe, tmp_path, language="ru")
+        )
         
-        Path(tmp_path).unlink()  # delete
+        text = result["text"].strip()
+        Path(tmp_path).unlink()
         
         return JSONResponse({"text": text, "status": "ok"})