diff --git a/src/editors/note_editor.rs b/src/editors/note_editor.rs
index fd76910..83a7658 100644
--- a/src/editors/note_editor.rs
+++ b/src/editors/note_editor.rs
@@ -79,11 +79,31 @@ impl Note {
 
         util::saved_status(ui, self.saved, &self.id, &self.name);
 
-        if ui.button("Save").clicked() {
-            if let Err(e) = self.save() {
-                eprintln!("Failed to save: {e}");
+        ui.horizontal(|ui| {
+            if ui.button("Save").clicked() {
+                if let Err(e) = self.save() {
+                    eprintln!("Failed to save: {e}");
+                }
             }
-        }
+
+            if ui.button("Create Copy").clicked() {
+                let new_id = uuid::Uuid::new_v4().to_string();
+                let mut new_note = self.clone();
+                new_note.id = new_id;
+                new_note.name = format!("{} (Copy)", self.name);
+                if let Err(e) = new_note.save() {
+                    eprintln!("Failed to save copy: {e}");
+                }
+            }
+
+            if ui.button("Delete").clicked() {
+                if let Err(e) =
+                    FILESYSTEM.delete(Path::new(&format!("notes/{id}.json", id = self.id)))
+                {
+                    eprintln!("Failed to delete: {e}");
+                }
+            }
+        });
 
         let id = ui.make_persistent_id("note_name");
         egui::collapsing_header::CollapsingState::load_with_default_open(ui.ctx(), id, true)
diff --git a/src/explorer.rs b/src/explorer.rs
index ec762ed..fa3449f 100644
--- a/src/explorer.rs
+++ b/src/explorer.rs
@@ -1,7 +1,4 @@
-use itertools::Itertools;
-use std::fs::{self, DirEntry};
-
-// use walkdir::{DirEntry, WalkDir};
+use std::path::Path;
 
 use crate::{
     PROJECT_FOLDER, RightPanelContent,
@@ -10,6 +7,7 @@ use crate::{
         asset_editor::Asset, content_editor::ContentSection, object_editor::ObjectInstance,
         tags::Tag, template_editor::Template,
     },
+    filesystem::{FILESYSTEM, FsError, LegacyFileSystem},
     note_editor::Note,
 };
 
@@ -165,14 +163,6 @@ impl Explorer {
         });
     }
 
-    /// Recursively renders a tree of documents.
-    ///
-    /// Each document is represented by a single element in the `documents` array.
-    /// The `parent_id` parameter is used to filter out documents that do not have the current
-    /// parent. If `parent_id` is `None`, all documents are rendered.
-    ///
-    /// `load_doc` is a mutable reference to a `MainEditor`. When a document is clicked, it
-    /// is loaded into the `MainEditor` and returned as `Some`.
     fn render_doc_branch(
         ui: &mut egui::Ui,
         documents: &[ContentSection],
@@ -241,95 +231,64 @@ impl Explorer {
     }
 
     fn render_assets(&mut self, ui: &mut egui::Ui, to_load: &mut Option<RightPanelContent>) {
+        Self::render_asset_dir(ui, to_load, Path::new("assets"));
+    }
+
+    fn render_asset_dir(ui: &mut egui::Ui, to_load: &mut Option<RightPanelContent>, path: &Path) {
+        let files = FILESYSTEM.lsfiles(path).unwrap();
+        let dirs = FILESYSTEM.lsdirs(path).unwrap();
+
+        let file_name = path.file_name().unwrap().to_str().unwrap().to_string();
+
         egui::collapsing_header::CollapsingState::load_with_default_open(
             ui.ctx(),
-            ui.make_persistent_id("assets"),
-            true,
+            ui.make_persistent_id(&file_name),
+            false,
         )
         .show_header(ui, |ui| {
             ui.horizontal(|ui| {
-                ui.label("Assets");
+                ui.label(file_name);
+                let _clicked = ui.button("+").on_hover_text("Add new item").clicked();
             });
         })
         .body(|ui| {
-            let entries = fs::read_dir(PROJECT_FOLDER.join("assets"))
-                .unwrap()
-                .filter_map(Result::ok)
-                .sorted_by(|a, b| {
-                    // Directories first, then files
-                    let a_is_dir = a.file_type().unwrap().is_dir();
-                    let b_is_dir = b.file_type().unwrap().is_dir();
-                    if a_is_dir == b_is_dir {
-                        a.file_name().cmp(&b.file_name())
-                    } else if a_is_dir {
-                        std::cmp::Ordering::Less
-                    } else {
-                        std::cmp::Ordering::Greater
-                    }
-                })
-                .collect::<Vec<_>>();
+            // recursive call to render the next level of documents
+            for dir in dirs.iter() {
+                Self::render_asset_dir(ui, to_load, dir);
+            }
 
-            for entry in entries {
-                Self::render_entry(ui, to_load, &entry);
+            for file in files.iter() {
+                Self::render_asset(ui, to_load, file);
             }
         });
     }
 
-    fn render_entry(ui: &mut egui::Ui, to_load: &mut Option<RightPanelContent>, entry: &DirEntry) {
-        let file_type = entry.file_type().unwrap();
-        let is_dir = file_type.is_dir();
-        let file_name = entry.file_name().to_str().unwrap().to_string();
-        let path = entry.path();
+    fn render_asset(ui: &mut egui::Ui, to_load: &mut Option<RightPanelContent>, path: &Path) {
+        let file_name = path.file_name().unwrap().to_str().unwrap().to_string();
 
-        if is_dir {
-            let entries = fs::read_dir(path)
-                .unwrap()
-                .filter_map(Result::ok)
-                .collect::<Vec<_>>();
-
-            egui::collapsing_header::CollapsingState::load_with_default_open(
-                ui.ctx(),
-                ui.make_persistent_id(&file_name),
-                false,
-            )
-            .show_header(ui, |ui| {
-                ui.horizontal(|ui| {
-                    ui.label(file_name);
-                    let _clicked = ui.button("+").on_hover_text("Add new item").clicked();
-                });
-            })
-            .body(|ui| {
-                // recursive call to render the next level of documents
-                for entry in entries {
-                    Self::render_entry(ui, to_load, &entry);
-                }
-            });
-        } else {
-            // Handle file
-            if ui
-                .selectable_label(false, format!("📄 {file_name}"))
-                .clicked()
-            {
-                // use asset::load to get the file at the path
-                let asset_path = path.strip_prefix(PROJECT_FOLDER.join("assets")).unwrap();
-                let asset = Asset::open(asset_path.to_string_lossy().to_string());
-                *to_load = Some(RightPanelContent::Asset(Box::new(asset)));
-            }
+        if ui
+            .selectable_label(false, format!("📄 {file_name}"))
+            .clicked()
+        {
+            // use asset::load to get the file at the path
+            let asset_path = path.strip_prefix(PROJECT_FOLDER.join("assets")).unwrap();
+            let asset = Asset::open(asset_path.to_string_lossy().to_string());
+            *to_load = Some(RightPanelContent::Asset(Box::new(asset)));
         }
     }
 
     // load templates from the templates folder
-    fn load_templates(&mut self) -> std::io::Result<()> {
-        let templates_folder = PROJECT_FOLDER.join("templates");
-        if !templates_folder.exists() {
-            std::fs::create_dir_all(&templates_folder)?;
+    fn load_templates(&mut self) -> Result<(), FsError> {
+        let path = Path::new("templates");
+
+        if !FILESYSTEM.exists(path) {
+            FILESYSTEM.mkdir(path)?;
         }
         let mut templates = Vec::new();
-        for entry in std::fs::read_dir(&templates_folder).unwrap() {
-            let path = entry.unwrap().path();
-            match Template::load(path.file_stem().unwrap().to_str().unwrap()) {
+        for entry in FILESYSTEM.lsfiles(path)? {
+            match FILESYSTEM.read::<Template>(&entry) {
                 Ok(t) => templates.push(t),
-                Err(err) => eprintln!("Could not parse file {path:?}: {err}"),
+                Err(err) => eprintln!("Could not parse file {entry:?}: {err}"),
             }
         }
         self.templates = templates;
@@ -338,17 +297,16 @@ impl Explorer {
     }
 
     // load objects from the objects folder
-    fn load_objects(&mut self) -> std::io::Result<()> {
-        let objects_folder = PROJECT_FOLDER.join("objects");
-        if !objects_folder.exists() {
-            std::fs::create_dir_all(&objects_folder)?;
+    fn load_objects(&mut self) -> Result<(), FsError> {
+        let path = Path::new("objects");
+        if !FILESYSTEM.exists(path) {
+            FILESYSTEM.mkdir(path)?;
         }
         let mut objects = Vec::new();
-        for entry in std::fs::read_dir(&objects_folder).unwrap() {
-            let path = entry.unwrap().path();
-            match ObjectInstance::load(path.file_stem().unwrap().to_str().unwrap()) {
+        for entry in FILESYSTEM.lsfiles(path)? {
+            match FILESYSTEM.read::<ObjectInstance>(&entry) {
                 Ok(o) => objects.push(o),
-                Err(err) => eprintln!("Could not parse file {path:?}: {err}"),
+                Err(err) => eprintln!("Could not parse file {entry:?}: {err}"),
             }
         }
         self.objects = objects;
@@ -357,16 +315,15 @@ impl Explorer {
     }
 
     // load notes from the notes folder
-    fn load_notes(&mut self) -> std::io::Result<()> {
-        let notes_folder = PROJECT_FOLDER.join("notes");
-        if !notes_folder.exists() {
-            std::fs::create_dir_all(&notes_folder)?;
+    fn load_notes(&mut self) -> Result<(), FsError> {
+        let path = Path::new("notes");
+        if !FILESYSTEM.exists(path) {
+            FILESYSTEM.mkdir(path)?;
         }
         let mut notes = Vec::new();
 
-        for entry in std::fs::read_dir(&notes_folder).unwrap() {
-            let path = entry.unwrap().path();
-            match Note::load(path.file_stem().unwrap().to_str().unwrap()) {
+        for entry in FILESYSTEM.lsfiles(path)? {
+            match FILESYSTEM.read::<Note>(&entry) {
                 Ok(note) => notes.push(note),
                 Err(err) => eprintln!("Could not parse file {path:?}: {err}"),
             }
@@ -378,18 +335,17 @@ impl Explorer {
     }
 
     // load documents from the documents folder
-    fn load_documents(&mut self) -> std::io::Result<()> {
-        let documents_folder = PROJECT_FOLDER.join("documents");
-        if !documents_folder.exists() {
-            std::fs::create_dir_all(&documents_folder)?;
+    fn load_documents(&mut self) -> Result<(), FsError> {
+        let path = Path::new("documents");
+        if !FILESYSTEM.exists(path) {
+            FILESYSTEM.mkdir(path)?;
         }
         let mut documents = Vec::new();
 
-        for entry in std::fs::read_dir(&documents_folder).unwrap() {
-            let path = entry.unwrap().path();
-            match ContentSection::load(path.file_stem().unwrap().to_str().unwrap()) {
+        for entry in FILESYSTEM.lsfiles(path)? {
+            match FILESYSTEM.read::<ContentSection>(&entry) {
                 Ok(document) => documents.push(MainEditor::open(document)),
-                Err(err) => eprintln!("Could not parse file {path:?}: {err}"),
+                Err(err) => eprintln!("Could not parse file {entry:?}: {err}"),
             }
         }
 
@@ -398,7 +354,7 @@ impl Explorer {
         Ok(())
     }
 
-    fn load_tags(&mut self) -> std::io::Result<()> {
+    fn load_tags(&mut self) -> Result<(), FsError> {
         self.tags = Tag::load_all();
         Ok(())
     }
diff --git a/src/filesystem/mod.rs b/src/filesystem/mod.rs
index 84def02..0bbc040 100644
--- a/src/filesystem/mod.rs
+++ b/src/filesystem/mod.rs
@@ -29,12 +29,12 @@ pub trait LegacyFileSystem {
     fn read_bytes(&self, path: &Path) -> Result<Vec<u8>, FsError>;
     fn write<T: Serialize>(&self, path: &Path, data: T) -> Result<(), FsError>;
     fn delete(&self, path: &Path) -> Result<(), FsError>;
+    fn lsfiles(&self, path: &Path) -> Result<Vec<PathBuf>, FsError>;
+    fn lsdirs(&self, path: &Path) -> Result<Vec<PathBuf>, FsError>;
     fn mkdir(&self, path: &Path) -> Result<(), FsError>;
     fn rename(&self, path: &Path, new_path: &Path) -> Result<(), FsError>;
-
     #[allow(unused)]
     fn exists(&self, path: &Path) -> bool;
-
     fn config_path(&self) -> PathBuf;
 }
 
diff --git a/src/filesystem/native.rs b/src/filesystem/native.rs
index 5a1af14..6a5a9ae 100644
--- a/src/filesystem/native.rs
+++ b/src/filesystem/native.rs
@@ -1,6 +1,3 @@
-// ────────────────────────────────────────────────────────────────
-// Imports
-// ────────────────────────────────────────────────────────────────
 use std::fs;
 use std::io::{ErrorKind, Read};
 use std::path::{Path, PathBuf};
@@ -10,11 +7,6 @@ use serde::de::DeserializeOwned;
 
 use crate::filesystem::{FsError, LegacyFileSystem};
 
-// ────────────────────────────────────────────────────────────────
-// Concrete implementation
-// ────────────────────────────────────────────────────────────────
-/// The concrete file‑system.  All paths are interpreted relative to
-/// `project_root`.
 pub struct NativeFileSystem {
     project_root: PathBuf,
 }
@@ -34,9 +26,6 @@ impl NativeFileSystem {
     }
 }
 
-// ────────────────────────────────────────────────────────────────
-// Implementation of the trait
-// ────────────────────────────────────────────────────────────────
 impl LegacyFileSystem for NativeFileSystem {
     fn read<T: DeserializeOwned>(&self, path: &Path) -> Result<T, FsError> {
         let full_path = self.full_path(path);
@@ -80,6 +69,28 @@ impl LegacyFileSystem for NativeFileSystem {
         fs::create_dir_all(full_path).map_err(FsError::Io)
     }
 
+    fn lsfiles(&self, path: &Path) -> Result<Vec<PathBuf>, FsError> {
+        let full_path = self.full_path(path);
+        let paths = fs::read_dir(full_path)?
+            .filter_map(|res| res.ok())
+            .filter(|entry| entry.file_type().unwrap().is_file())
+            .map(|entry| entry.path())
+            .collect();
+
+        Ok(paths)
+    }
+
+    fn lsdirs(&self, path: &Path) -> Result<Vec<PathBuf>, FsError> {
+        let full_path = self.full_path(path);
+        let paths = fs::read_dir(full_path)?
+            .filter_map(|res| res.ok())
+            .filter(|entry| entry.file_type().unwrap().is_dir())
+            .map(|entry| entry.path())
+            .collect();
+
+        Ok(paths)
+    }
+
     fn exists(&self, path: &Path) -> bool {
         let full_path = self.full_path(path);
         full_path.exists()
diff --git a/src/scene.rs b/src/scene.rs
deleted file mode 100644
index e69de29..0000000