Update post-generation steps in the project bootstrap hook

hooks/post_gen_project.py

@@ -23,9 +23,8 @@ def main() -> None:
 
     print("\nProject lockfile generated.")
     print("Next steps:")
-    print("1. uv sync --frozen --group dev")
-    print("2. uv run invoke lint")
-    print("3. uv run invoke test")
+    print("cd <project_name>")
+    print("source init.sh")
 
 
 if __name__ == "__main__":