Deploy Signal Generator app

Dockerfile

@@ -32,6 +32,10 @@ RUN chmod +x entrypoint.sh
 
 # Create a non-root user (Hugging Face Spaces runs as user 1000)
 RUN useradd -m -u 1000 user
+
+# Sets permissions for the app directory so the user can write (e.g. database dir)
+RUN chown -R user:user /app
+
 USER user
 ENV HOME=/home/user \
     PATH=/home/user/.local/bin:$PATH

src/db/local_database.py

@@ -92,11 +92,18 @@ class LocalDatabase:
             compress: Whether to compress JSON files with gzip
         """
         self.db_dir = Path(db_dir)
-        self.db_dir.mkdir(exist_ok=True)
-        
-        # Create subdirectories for organization
-        self.data_dir = self.db_dir / "data"
-        self.data_dir.mkdir(exist_ok=True)
+        try:
+            self.db_dir.mkdir(exist_ok=True)
+            self.data_dir = self.db_dir / "data"
+            self.data_dir.mkdir(exist_ok=True)
+        except (PermissionError, OSError) as e:
+            print(f"⚠️ Error creating database dir at {self.db_dir}: {e}")
+            import tempfile
+            self.db_dir = Path(tempfile.gettempdir()) / "gotti_database"
+            print(f"⚠️ Falling back to temporary directory: {self.db_dir}")
+            self.db_dir.mkdir(exist_ok=True)
+            self.data_dir = self.db_dir / "data"
+            self.data_dir.mkdir(exist_ok=True)
         
         # Load environment variables
         from dotenv import load_dotenv