fix: Resolve frontend path issues and TTS audio file paths

Author: Mtrya

backend/main.py

@@ -6,6 +6,7 @@
 from typing import List, Optional, Dict, Any
 import uvicorn
 import os
+import sys
 from pathlib import Path
 
 # Import our modules
@@ -54,20 +55,10 @@
 except ImportError:
     from paths import get_paths
 
-# Mount static files for audio cache and frontend
+# Mount static files for audio cache
 paths = get_paths()
 app.mount("/audio_cache", StaticFiles(directory=str(paths.audio_cache)), name="audio_cache")
 
-# Mount frontend static files
-frontend_path = paths.base_path / "frontend" / "dist"
-if frontend_path.exists():
-    app.mount("/", StaticFiles(directory=str(frontend_path), html=True), name="frontend")
-else:
-    # Fallback for development when running from source
-    dev_frontend_path = Path(__file__).parent.parent / "frontend" / "dist"
-    if dev_frontend_path.exists():
-        app.mount("/", StaticFiles(directory=str(dev_frontend_path), html=True), name="frontend")
-
 # API info endpoint (moved from root to avoid conflict with frontend)
 @app.get("/api/info")
 async def api_info():
@@ -288,6 +279,25 @@ async def get_available_voices(omni_model: str):
     except Exception as e:
         raise HTTPException(status_code=500, detail=f"Error getting voices: {str(e)}")
 
+# Mount frontend static files (moved after API endpoints to avoid conflicts)
+if getattr(sys, 'frozen', False):
+    # Running as PyInstaller bundle - frontend files are in the bundled directory
+    bundled_frontend_path = Path(sys._MEIPASS) / "frontend" / "dist"
+    if bundled_frontend_path.exists():
+        app.mount("/", StaticFiles(directory=str(bundled_frontend_path), html=True), name="frontend")
+    else:
+        print(f"Warning: Frontend directory not found at {bundled_frontend_path}")
+else:
+    # Development environment
+    frontend_path = paths.base_path / "frontend" / "dist"
+    if frontend_path.exists():
+        app.mount("/", StaticFiles(directory=str(frontend_path), html=True), name="frontend")
+    else:
+        # Fallback for development when running from source
+        dev_frontend_path = Path(__file__).parent.parent / "frontend" / "dist"
+        if dev_frontend_path.exists():
+            app.mount("/", StaticFiles(directory=str(dev_frontend_path), html=True), name="frontend")
+
 # Error handler
 @app.exception_handler(Exception)
 async def general_exception_handler(request, exc):

backend/omni_client.py

@@ -207,9 +207,11 @@ async def text_to_speech(self, request: TTSInput) -> TTSResult:
         # Check cache first
         cache_path = self._get_tts_cache_path(request.text, request.voice)
         if cache_path.exists():
+            # Return web-accessible path relative to /audio_cache mount point
+            web_path = f"/audio_cache/tts/{cache_path.name}"
             return TTSResult(
                 text=request.text,
-                audio_file_path=str(cache_path)
+                audio_file_path=web_path
             )
 
         # Prepare TTS prompt
@@ -229,9 +231,11 @@ async def text_to_speech(self, request: TTSInput) -> TTSResult:
             audio_np = np.frombuffer(mp3_bytes, dtype=np.int16)
             sf.write(cache_path, audio_np, samplerate=24000)
 
+            # Return web-accessible path relative to /audio_cache mount point
+            web_path = f"/audio_cache/tts/{cache_path.name}"
             return TTSResult(
                 text=request.text,
-                audio_file_path=str(cache_path)
+                audio_file_path=web_path
             )
         else:
             raise Exception("No audio response received from TTS request")