Fix git clone hanging issue - prevent credential prompts

- Add GIT_TERMINAL_PROMPT=0 to prevent git from prompting for credentials
- Add stdin=subprocess.DEVNULL to block any input requests
- Reduce timeout from 60s to 30s for faster failover
- This fixes the app hanging on 'Loading...' when GitHub repo is empty

setup_data.py

@@ -25,12 +25,18 @@ def fetch_data_from_github():
         
         print(f"Attempting to clone data from {GITHUB_REPO}...")
         
+        # Set environment to prevent git from prompting for credentials
+        env = os.environ.copy()
+        env['GIT_TERMINAL_PROMPT'] = '0'
+        
         # Clone the repository
         result = subprocess.run(
             ["git", "clone", "--depth", "1", GITHUB_REPO, str(temp_clone_dir)],
             capture_output=True,
             text=True,
-            timeout=60
+            timeout=30,  # Shorter timeout
+            stdin=subprocess.DEVNULL,  # Prevent any input prompts
+            env=env  # Use modified environment
         )
         
         if result.returncode != 0: