diff --git a/.env.example b/.env.example
index 18d3990..d9c5579 100644
--- a/.env.example
+++ b/.env.example
@@ -8,6 +8,4 @@ PORT=7080
 API_KEY=EMPTY
 MODEL=qwen3.5-35b-a3b
 
-# Optional: Add more configuration variables as needed
-# DEBUG=False
-# LOG_LEVEL=INFO
+
diff --git a/backend/utils/__init__.py b/backend/utils/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/backend/utils/server_utils.py b/backend/utils/server_utils.py
deleted file mode 100644
index e69de29..0000000
diff --git a/frontend/editor.py b/frontend/editor.py
index 2264ae9..76d454c 100644
--- a/frontend/editor.py
+++ b/frontend/editor.py
@@ -19,7 +19,6 @@ LANG_MAP = {
     }
 
 
-
 # ── Modals ────────────────────────────────────────────────────────────────────
 
 @st.dialog("Rename File")
@@ -209,7 +208,7 @@ class FileViewer:
 
                 with cols[1]:
                     st.download_button(
-                        label="⬇ Download",
+                        label="Download",
                         data=st.session_state.files_content.get(file_path, ""),
                         file_name=Path(file_path).name,
                         mime="text/plain",
diff --git a/frontend/sidebar.py b/frontend/sidebar.py
index 72b1b96..ef3dc35 100644
--- a/frontend/sidebar.py
+++ b/frontend/sidebar.py
@@ -274,10 +274,10 @@ def render_filetree_arborist(tree):
     selected = tree_view(
         data=data,
         icons={"open": "📂", "closed": "📁"},
-        height=400,
+        height=350,
         selection=active_selection,
         select_internal_nodes=True,  # allow clicking folder names, not just files
-        open_by_default=True
+        open_by_default=True,
     )
 
     return selected
@@ -369,17 +369,6 @@ def render_sidebar():
                         _add_folder_dialog(folder_rel)
                     if st.button("Delete Folder", key="btn_delete_folder", use_container_width=True):
                         _delete_folder_dialog(folder_rel, folder_name)
-            
-            if st.session_state.get("active_file"):
-                active_file_name = Path(st.session_state.active_file).name
-                file_rel = str(Path(st.session_state.active_file).relative_to(fm.base_path))
-
-                with st.container(border=True):
-                    st.write(f"**File actions:** {active_file_name}")
-                    if st.button("Rename File", key="btn_rename_file", use_container_width=True):
-                        _rename_file_dialog(file_rel, active_file_name)
-                    if st.button("Delete File", key="btn_delete_active_file", use_container_width=True):
-                        _delete_file_dialog(file_rel, active_file_name)
 
         with add_more:
             # Popover for workspace-root actions (not tied to any selected folder).
@@ -407,6 +396,5 @@ def render_sidebar():
                             st.success(f"'{uploaded.name}' uploaded successfully.")
 
 
-
 if __name__ == "__main__":
     render_sidebar()
diff --git a/project_exercise.pdf b/project_exercise.pdf
deleted file mode 100644
index 920afa4..0000000
Binary files a/project_exercise.pdf and /dev/null differ