fix: CI installation - use non-editable mode and ensure setuptools

Author: firefox-669

.github/workflows/ci.yml

@@ -34,7 +34,8 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -e .
+        pip install setuptools wheel
+        pip install .
         pip install pytest pytest-asyncio litellm pyyaml
     
     - name: Run tests
@@ -110,7 +111,8 @@ jobs:
 
     - name: Install dependencies
       run: |
-        pip install -e .
+        pip install setuptools wheel
+        pip install .
     
     - name: Run production readiness check
       run: |

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
 requires = ["setuptools>=61.0", "wheel"]
-build-backend = "setuptools.backends._legacy:_Backend"
+build-backend = "setuptools.build_meta"
 
 [project]
 name = "self-optimizing-holo-evolution"