Create codex/planner.py

codex/planner.py

@@ -0,0 +1,8 @@
+def decompose_task(task):
+    steps = [
+        f"Analyze requirements: {task}",
+        f"Design solution structure for: {task}",
+        f"Implement safe code for: {task}",
+        f"Test implementation for: {task}"
+    ]
+    return steps