Force legacy setup.py installation to bypass wheel naming issues

- Change from pip install to python setup.py install
- This completely bypasses wheel building that causes naming conflicts
- Should finally resolve the CAI installation issue in HF Spaces

app.py

@@ -32,9 +32,9 @@ def setup_cai_if_needed():
                 ], cwd=repo_dir, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 
                 print("Installing CAI from local directory...")
-                # Install from local directory - this avoids wheel naming issues
+                # Force legacy setup.py installation to bypass wheel building issues
                 subprocess.check_call([
-                    sys.executable, "-m", "pip", "install", "--no-cache-dir", "."
+                    sys.executable, "setup.py", "install"
                 ], cwd=repo_dir)
 
             import CAI