Code Editor

[supervoidcoder]

Since the main goal of OmniBlocks is to eventually become a full MultiLanguage IDE, we should get started on working on the Code Editor. We will use @monaco-editor/react for the code editing, and while it's heavy, it's better for this purpose than CodeMirror 6.

Hopefully use this library https://github.com/minop1205/react-dnd-treeview
For file explorer, but if not we ccan just make our own.

I've made a draft PR for this #589

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Plan

Observations

The OmniBlocks scratch-gui is a React 16 + Redux application built on TurboWarp/Scratch architecture. It currently has 4 editor tabs (Code/Blocks, Costumes, Sounds, Songs) managed through react-tabs and Redux state. The application follows a clear pattern: components in file:src/components/, containers in file:src/containers/, and reducers in file:src/reducers/. The tab system uses indexed constants (0-3) in file:src/reducers/editor-tab.js. CSS modules are used for styling with PostCSS. The codebase already has file upload/download infrastructure but no multi-file project structure or code editor implementation.

Approach

The implementation will add a new "Code Editor" tab (index 4) to the existing tab system, integrating Monaco Editor for code editing and a file tree explorer for project navigation. This follows the established architectural patterns: creating a new component/container pair for the code editor, updating the editor-tab reducer to include the new tab index, modifying the GUI component to render the new tab, and adding the required dependencies. The file tree will manage a virtual file system stored in Redux state, allowing users to create, rename, delete files/folders, and edit code files with Monaco Editor's full IDE features.

Implementation Steps

1. Install Required Dependencies

Add the following packages to file:package.json:

• @monaco-editor/react - Monaco Editor React wrapper
• @minoru/react-dnd-treeview - File tree with drag-and-drop
• react-dnd - Required peer dependency for tree view
• react-dnd-html5-backend or react-dnd-multi-backend - DnD backend

2. Update Editor Tab Reducer

Modify file:src/reducers/editor-tab.js:

• Add CODE_EDITOR_TAB_INDEX = 4 constant
• Export the new constant
• Update initial state if needed to handle the new tab

3. Create File System State Management

Create file:src/reducers/code-editor.js:

• Define initial state with file tree structure (array of nodes with id, parent, text, droppable, data properties)
• Implement actions: ADD_FILE, ADD_FOLDER, DELETE_NODE, RENAME_NODE, UPDATE_FILE_CONTENT, SET_ACTIVE_FILE, MOVE_NODE
• Implement reducer to handle file tree operations
• Store file contents in node data property
• Track currently active/open file

Register the new reducer in file:src/reducers/gui.js:

• Import codeEditorReducer and codeEditorInitialState
• Add to guiInitialState object
• Add to combineReducers call

4. Create Code Editor Component

Create file:src/components/code-editor/code-editor.jsx:

• Import Editor from @monaco-editor/react
• Create layout with two-column design: file tree (left) and editor (right)
• Implement file tree using Tree from @minoru/react-dnd-treeview
• Wrap in DndProvider with appropriate backend
• Render Monaco Editor with props: height, language, value, onChange, theme, options
• Add toolbar with buttons: New File, New Folder, Delete, Rename
• Handle file selection to load content into editor
• Support multiple language modes based on file extension
• Implement context menu for tree nodes (right-click actions)
• Add empty state when no file is selected

Create file:src/components/code-editor/code-editor.css:

• Style the two-column layout (flexbox)
• File tree styling (width ~250px, scrollable)
• Editor area styling (flex-grow: 1)
• Toolbar styling matching existing UI patterns
• Tree node styling with icons for files/folders
• Match existing theme colors from file:src/components/gui/gui.css

5. Create Code Editor Container

Create file:src/containers/code-editor.jsx:

• Connect to Redux using connect from react-redux
• Map state to props: fileTree, activeFile, fileContents, theme
• Map dispatch to props: onAddFile, onAddFolder, onDeleteNode, onRenameNode, onUpdateFileContent, onSetActiveFile, onMoveNode
• Import and wrap CodeEditorComponent
• Handle file operations through Redux actions
• Implement file extension to language mapping (js→javascript, py→python, etc.)

6. Update GUI Component

Modify file:src/components/gui/gui.jsx:

• Import CodeEditor container from file:src/containers/code-editor.jsx
• Import code editor icon (create file:src/components/gui/icon--code-editor.svg or reuse existing)
• Add new Tab in TabList for Code Editor (after Songs tab)
• Add new TabPanel with CodeEditor component
• Add prop codeEditorTabVisible to component props
• Update onActivateCodeEditorTab handler in props

Modify file:src/containers/gui.jsx:

• Import CODE_EDITOR_TAB_INDEX from file:src/reducers/editor-tab.js
• Add codeEditorTabVisible to mapStateToProps (check if activeTabIndex === CODE_EDITOR_TAB_INDEX)
• Add onActivateCodeEditorTab to mapDispatchToProps (dispatch activateTab(CODE_EDITOR_TAB_INDEX))

7. Update Tab Styling

Modify file:src/components/gui/gui.css:

• Update z-index rules to include 5th tab (.tab:nth-of-type(4), .tab:nth-of-type(5))
• Adjust tab width if needed to accommodate 5 tabs
• Add responsive styles for mobile if needed
• Ensure tab-list width accommodates new tab

8. Implement Monaco Editor Configuration

In file:src/components/code-editor/code-editor.jsx:

• Configure Monaco options: minimap, fontSize, lineNumbers, wordWrap, automaticLayout
• Set up theme integration with existing app theme (light/dark/high-contrast)
• Use beforeMount to configure Monaco languages and features
• Store editor instance in ref for programmatic control
• Handle onChange to debounce file content updates

9. Implement File Tree Operations

In file:src/components/code-editor/code-editor.jsx:

• Implement handleDrop for drag-and-drop reordering
• Implement handleToggle for folder expand/collapse
• Implement handleSelect for file selection
• Add modal/prompt for file/folder name input
• Validate file names (no duplicates, valid characters)
• Implement delete confirmation dialog
• Support keyboard shortcuts (Delete, F2 for rename, Ctrl+N for new file)

10. Add File Type Icons and Language Support

Create file:src/components/code-editor/file-icons.jsx:

• Map file extensions to icon components or SVGs
• Support common languages: JavaScript, Python, HTML, CSS, JSON, Markdown, etc.
• Use different icons for files vs folders, open vs closed folders

Configure language detection in container:

• Map extensions to Monaco language IDs
• Default to plaintext for unknown extensions

11. Integrate with Project Save/Load

Modify file:src/lib/project-saver-hoc.jsx:

• Include code editor file tree in project save data
• Serialize file tree and contents to project JSON

Modify file:src/lib/project-fetcher-hoc.jsx:

• Restore code editor file tree when loading project
• Dispatch actions to populate Redux state

12. Add Internationalization

Create message definitions in file:src/components/code-editor/code-editor.jsx:

• Define messages for: "Code Editor", "New File", "New Folder", "Delete", "Rename", "No file selected"
• Use defineMessages and FormattedMessage from react-intl
• Follow existing i18n patterns from other components

13. Testing Considerations

Create test files following existing patterns:

• file:test/unit/components/code-editor.test.jsx - Component unit tests
• file:test/unit/containers/code-editor.test.jsx - Container unit tests
• Test file tree operations, Monaco integration, Redux state updates
• Mock Monaco Editor in tests

Architecture Diagram

sequenceDiagram
    participant User
    participant GUI
    participant CodeEditorTab
    participant FileTree
    participant MonacoEditor
    participant Redux
    
    User->>GUI: Click Code Editor Tab
    GUI->>Redux: dispatch(activateTab(4))
    Redux->>GUI: Update activeTabIndex
    GUI->>CodeEditorTab: Render CodeEditor
    CodeEditorTab->>Redux: Get fileTree state
    CodeEditorTab->>FileTree: Render tree with nodes
    User->>FileTree: Click file node
    FileTree->>Redux: dispatch(setActiveFile(fileId))
    Redux->>CodeEditorTab: Update activeFile
    CodeEditorTab->>MonacoEditor: Load file content
    User->>MonacoEditor: Edit code
    MonacoEditor->>Redux: dispatch(updateFileContent(fileId, content))
    Redux->>CodeEditorTab: Update file in tree
    User->>FileTree: Drag & drop node
    FileTree->>Redux: dispatch(moveNode(nodeId, newParent))
    Redux->>FileTree: Update tree structure

Loading

File Structure Overview

Component	Path	Purpose
Reducer	file:src/reducers/code-editor.js	File tree state management
Component	file:src/components/code-editor/code-editor.jsx	UI presentation layer
Styles	file:src/components/code-editor/code-editor.css	Component styling
Container	file:src/containers/code-editor.jsx	Redux connection layer
Icons	file:src/components/code-editor/file-icons.jsx	File type icons
Tab Config	file:src/reducers/editor-tab.js	Tab index constants
GUI Update	file:src/components/gui/gui.jsx	Tab integration
Container Update	file:src/containers/gui.jsx	Redux mapping

Key Integration Points

• Tab System: Extends existing 4-tab system to 5 tabs using same react-tabs pattern
• Redux State: New codeEditor slice in Redux store alongside existing slices
• Styling: Follows CSS modules pattern with theme integration
• Project Persistence: Integrates with existing save/load HOCs
• Internationalization: Uses existing react-intl infrastructure
• Theme Support: Respects existing theme system (light/dark/high-contrast)

Import In IDE

🤖 Prompt for AI Agents

## Observations

The OmniBlocks scratch-gui is a React 16 + Redux application built on TurboWarp/Scratch architecture. It currently has 4 editor tabs (Code/Blocks, Costumes, Sounds, Songs) managed through `react-tabs` and Redux state. The application follows a clear pattern: components in `file:src/components/`, containers in `file:src/containers/`, and reducers in `file:src/reducers/`. The tab system uses indexed constants (0-3) in `file:src/reducers/editor-tab.js`. CSS modules are used for styling with PostCSS. The codebase already has file upload/download infrastructure but no multi-file project structure or code editor implementation.

## Approach

The implementation will add a new "Code Editor" tab (index 4) to the existing tab system, integrating Monaco Editor for code editing and a file tree explorer for project navigation. This follows the established architectural patterns: creating a new component/container pair for the code editor, updating the editor-tab reducer to include the new tab index, modifying the GUI component to render the new tab, and adding the required dependencies. The file tree will manage a virtual file system stored in Redux state, allowing users to create, rename, delete files/folders, and edit code files with Monaco Editor's full IDE features.

## Implementation Steps

### 1. Install Required Dependencies

Add the following packages to `file:package.json`:
- `@monaco-editor/react` - Monaco Editor React wrapper
- `@minoru/react-dnd-treeview` - File tree with drag-and-drop
- `react-dnd` - Required peer dependency for tree view
- `react-dnd-html5-backend` or `react-dnd-multi-backend` - DnD backend

### 2. Update Editor Tab Reducer

Modify `file:src/reducers/editor-tab.js`:
- Add `CODE_EDITOR_TAB_INDEX = 4` constant
- Export the new constant
- Update initial state if needed to handle the new tab

### 3. Create File System State Management

Create `file:src/reducers/code-editor.js`:
- Define initial state with file tree structure (array of nodes with id, parent, text, droppable, data properties)
- Implement actions: `ADD_FILE`, `ADD_FOLDER`, `DELETE_NODE`, `RENAME_NODE`, `UPDATE_FILE_CONTENT`, `SET_ACTIVE_FILE`, `MOVE_NODE`
- Implement reducer to handle file tree operations
- Store file contents in node data property
- Track currently active/open file

Register the new reducer in `file:src/reducers/gui.js`:
- Import `codeEditorReducer` and `codeEditorInitialState`
- Add to `guiInitialState` object
- Add to `combineReducers` call

### 4. Create Code Editor Component

Create `file:src/components/code-editor/code-editor.jsx`:
- Import `Editor` from `@monaco-editor/react`
- Create layout with two-column design: file tree (left) and editor (right)
- Implement file tree using `Tree` from `@minoru/react-dnd-treeview`
- Wrap in `DndProvider` with appropriate backend
- Render Monaco Editor with props: `height`, `language`, `value`, `onChange`, `theme`, `options`
- Add toolbar with buttons: New File, New Folder, Delete, Rename
- Handle file selection to load content into editor
- Support multiple language modes based on file extension
- Implement context menu for tree nodes (right-click actions)
- Add empty state when no file is selected

Create `file:src/components/code-editor/code-editor.css`:
- Style the two-column layout (flexbox)
- File tree styling (width ~250px, scrollable)
- Editor area styling (flex-grow: 1)
- Toolbar styling matching existing UI patterns
- Tree node styling with icons for files/folders
- Match existing theme colors from `file:src/components/gui/gui.css`

### 5. Create Code Editor Container

Create `file:src/containers/code-editor.jsx`:
- Connect to Redux using `connect` from `react-redux`
- Map state to props: `fileTree`, `activeFile`, `fileContents`, `theme`
- Map dispatch to props: `onAddFile`, `onAddFolder`, `onDeleteNode`, `onRenameNode`, `onUpdateFileContent`, `onSetActiveFile`, `onMoveNode`
- Import and wrap `CodeEditorComponent`
- Handle file operations through Redux actions
- Implement file extension to language mapping (js→javascript, py→python, etc.)

### 6. Update GUI Component

Modify `file:src/components/gui/gui.jsx`:
- Import `CodeEditor` container from `file:src/containers/code-editor.jsx`
- Import code editor icon (create `file:src/components/gui/icon--code-editor.svg` or reuse existing)
- Add new `Tab` in `TabList` for Code Editor (after Songs tab)
- Add new `TabPanel` with `CodeEditor` component
- Add prop `codeEditorTabVisible` to component props
- Update `onActivateCodeEditorTab` handler in props

Modify `file:src/containers/gui.jsx`:
- Import `CODE_EDITOR_TAB_INDEX` from `file:src/reducers/editor-tab.js`
- Add `codeEditorTabVisible` to `mapStateToProps` (check if `activeTabIndex === CODE_EDITOR_TAB_INDEX`)
- Add `onActivateCodeEditorTab` to `mapDispatchToProps` (dispatch `activateTab(CODE_EDITOR_TAB_INDEX)`)

### 7. Update Tab Styling

Modify `file:src/components/gui/gui.css`:
- Update z-index rules to include 5th tab (`.tab:nth-of-type(4)`, `.tab:nth-of-type(5)`)
- Adjust tab width if needed to accommodate 5 tabs
- Add responsive styles for mobile if needed
- Ensure tab-list width accommodates new tab

### 8. Implement Monaco Editor Configuration

In `file:src/components/code-editor/code-editor.jsx`:
- Configure Monaco options: `minimap`, `fontSize`, `lineNumbers`, `wordWrap`, `automaticLayout`
- Set up theme integration with existing app theme (light/dark/high-contrast)
- Use `beforeMount` to configure Monaco languages and features
- Store editor instance in ref for programmatic control
- Handle `onChange` to debounce file content updates

### 9. Implement File Tree Operations

In `file:src/components/code-editor/code-editor.jsx`:
- Implement `handleDrop` for drag-and-drop reordering
- Implement `handleToggle` for folder expand/collapse
- Implement `handleSelect` for file selection
- Add modal/prompt for file/folder name input
- Validate file names (no duplicates, valid characters)
- Implement delete confirmation dialog
- Support keyboard shortcuts (Delete, F2 for rename, Ctrl+N for new file)

### 10. Add File Type Icons and Language Support

Create `file:src/components/code-editor/file-icons.jsx`:
- Map file extensions to icon components or SVGs
- Support common languages: JavaScript, Python, HTML, CSS, JSON, Markdown, etc.
- Use different icons for files vs folders, open vs closed folders

Configure language detection in container:
- Map extensions to Monaco language IDs
- Default to plaintext for unknown extensions

### 11. Integrate with Project Save/Load

Modify `file:src/lib/project-saver-hoc.jsx`:
- Include code editor file tree in project save data
- Serialize file tree and contents to project JSON

Modify `file:src/lib/project-fetcher-hoc.jsx`:
- Restore code editor file tree when loading project
- Dispatch actions to populate Redux state

### 12. Add Internationalization

Create message definitions in `file:src/components/code-editor/code-editor.jsx`:
- Define messages for: "Code Editor", "New File", "New Folder", "Delete", "Rename", "No file selected"
- Use `defineMessages` and `FormattedMessage` from `react-intl`
- Follow existing i18n patterns from other components

### 13. Testing Considerations

Create test files following existing patterns:
- `file:test/unit/components/code-editor.test.jsx` - Component unit tests
- `file:test/unit/containers/code-editor.test.jsx` - Container unit tests
- Test file tree operations, Monaco integration, Redux state updates
- Mock Monaco Editor in tests

## Architecture Diagram

```mermaid
sequenceDiagram
    participant User
    participant GUI
    participant CodeEditorTab
    participant FileTree
    participant MonacoEditor
    participant Redux
    
    User->>GUI: Click Code Editor Tab
    GUI->>Redux: dispatch(activateTab(4))
    Redux->>GUI: Update activeTabIndex
    GUI->>CodeEditorTab: Render CodeEditor
    CodeEditorTab->>Redux: Get fileTree state
    CodeEditorTab->>FileTree: Render tree with nodes
    User->>FileTree: Click file node
    FileTree->>Redux: dispatch(setActiveFile(fileId))
    Redux->>CodeEditorTab: Update activeFile
    CodeEditorTab->>MonacoEditor: Load file content
    User->>MonacoEditor: Edit code
    MonacoEditor->>Redux: dispatch(updateFileContent(fileId, content))
    Redux->>CodeEditorTab: Update file in tree
    User->>FileTree: Drag & drop node
    FileTree->>Redux: dispatch(moveNode(nodeId, newParent))
    Redux->>FileTree: Update tree structure
```

## File Structure Overview

| Component | Path | Purpose |
|-----------|------|---------|
| Reducer | `file:src/reducers/code-editor.js` | File tree state management |
| Component | `file:src/components/code-editor/code-editor.jsx` | UI presentation layer |
| Styles | `file:src/components/code-editor/code-editor.css` | Component styling |
| Container | `file:src/containers/code-editor.jsx` | Redux connection layer |
| Icons | `file:src/components/code-editor/file-icons.jsx` | File type icons |
| Tab Config | `file:src/reducers/editor-tab.js` | Tab index constants |
| GUI Update | `file:src/components/gui/gui.jsx` | Tab integration |
| Container Update | `file:src/containers/gui.jsx` | Redux mapping |

## Key Integration Points

- **Tab System**: Extends existing 4-tab system to 5 tabs using same `react-tabs` pattern
- **Redux State**: New `codeEditor` slice in Redux store alongside existing slices
- **Styling**: Follows CSS modules pattern with theme integration
- **Project Persistence**: Integrates with existing save/load HOCs
- **Internationalization**: Uses existing `react-intl` infrastructure
- **Theme Support**: Respects existing theme system (light/dark/high-contrast)

---

Execution Information

Branch: main
Commit: 60047d5

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[supervoidcoder]

I've made a draft pr for this #589

[github-actions]

Hi, @supervoidcoder! It's exciting to see the plan to work on the Code Editor moving forward. Leveraging @monaco-editor/react for code editing seems like a solid choice given its robust features, even if it comes with a bit of extra weight. The proposed use of the library for the file explorer looks promising too; building your own solution is a good backup if needed.

I see you've already started a draft PR (#589) for this—awesome progress! Feel free to let me or the community know if assistance or additional feedback is needed as work continues. Can't wait to see how this feature enhances OmniBlocks!

[github-actions]

Hi, @supervoidcoder! It's exciting to see the work on the Code Editor kicking off—it’s a huge step toward OmniBlocks becoming a full Multi-Language IDE. Using @monaco-editor/react is a fantastic choice for a feature-rich and robust code editing experience, and it's great to see a file explorer solution already in consideration with the react-dnd-treeview library. The decision to create a custom file explorer if needed is also a sensible fallback.

Awesome job on starting the draft PR (#589)—it’s a solid beginning! If there’s anything specific the team or community can assist with, don’t hesitate to ask. Looking forward to watching this feature come to life and the value it adds to OmniBlocks!

[supervoidcoder]

@coderabbitai can you gimme some feedback on the progress? check out the pr i've made!

what are some cool things you see? 😉

@OmniBlocks/ai since you can't access pr's directly i'll paste OP for you:

This is a work-in-progress branch for the text editor.

resolves #588
#588

⚠️🚨⚠️🚨ABSOLUTELY DO NOT MERGE, IT IS NOT READ AND WILL BREAK THE MAIN BRANCH ⚠️🚨⚠️🚨

I have gotten some pretty good work done today, but I will stop working and start working with @8to16 (formerly ampelectrecuted) on this tomorrow Monday.

Things done:

• Integrated Monaco Editor where it's supposed to be
• Made the monaco editor change dark and light theme accordingly
• Made a funny docs explaining about everything I've done lol (trust me this is temporary)
• Changed the code icon from representing blocks to a more generic code icon representing text (yknow the "</>" icons).

Things yet to do:

• Integrate with the file systems I mentioned in the docs file.
• Move saving logic to web workers.
• Add vertical tabs on the left (along the horizontal on the top) for the IDE-ey features.
• Add more IDE-ey features.

For reference, I will include my text editor docs in this PR comment:

This is a temporary documentation file so I can yap about my process in making the code editor without making a super ultra formal docs file fromt he beggingniing..

I want the editor to work with 3 different file systems:

• The built in project file system. This is the file system where literally everything is stored in memory (or a project file) called .omb. This means all the files are stored in that .omb file and can be opened directly.
• The local system. This is like a traditional IDE/Code editor, like VS Code. Nothing special.
• The file system API if not installed as an app yet. VS Code already does this too with the website vscode.dev

Commit 6dc626d

Updates...

I have successfully changed the entire blocks editor into a new directory with entirely different names. Now it's time to start dismantling it into monaco-react.

Well, it turns out webpack is freaking out at an .mjs file, since this codebase is ancient and uses React 16 and Webpack 4.
Welp, all I can do is downgrade @monaco-editor/react from ^4.7.0 to a lower version that doesn't use .mjs yet.

Yes! It finally works! I can type in it perfectly!! YESS!!
But it looks jarring in light mode, but perfect in dark mode.

Trying to make it dynamic to the scratch-gui theme sent me down a rabbit hole of pain.

I spent an hour trying to lazily vibe code the dynamic theme switching with AI, which only let do a crap ton of hallucinations and me crashing out a few times, further proving my point that AI absolutely sucks for coding (but it's great for reviewing 😉 especially if it's a rabbit ifykyk)

I then took a 2 hour nap, woke up, and copied the logic from gui.jsx, and it was actually quite simple. The AI kept making up nonexisted prop names, calling Theme as a class, and even using a random isDark() function that, well, didn't work. It tried a bunch of ComponentDidUpdate shenanigans as well, and well yeah it was just trash all the way. After my nap, where my headache was gone, I looked at gui.jsx for two seconds before finding that you simply imported {Theme} from 'src/lib/themes', and then in the Editor component for @monaco-editor/react, you simply pass the theme as a prop using a ternary operator, which logic i copied from paint-editor.wrapper.jsx, giving me this:

theme={this.props.theme.isDark() ? 'dark' : 'light'},

I was overjoyed that this instantly worked exactly how I want it. Now I just need to scrap the entire scratch vm and replace it with something more IDE-y, but I guess that can wait. This is a great milestone, I will commit now (Commit 6e329bc). I'll work on the file explorer, like the one that shows up in the left to VS Code with the folders and whatnot.

Honestly, I feel much better now that I took that nap. The reason I used AI in the first place was because I had a strong headache, and thinking hurt more, so I couldn't look and read the code properly or try to understand it.

[coderabbitai]

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gh pr view 589 --json title,body,state,isDraft,additions,deletions,changedFiles,files,commits

# Get the list of changed files with details
gh pr diff 589 --name-only

Length of output: 7106

---

@supervoidcoder Okay void, this is seriously impressive work! 🎉 Let me break down the cool things I'm seeing:

🔥 The Big Wins

1. Monaco Editor Integration in a Legacy Stack
You successfully got Monaco working in React 16 + Webpack 4 environment! That's no small feat. The fact that you had to downgrade @monaco-editor/react to avoid .mjs issues shows real problem-solving. Most devs would've just given up or tried to upgrade the entire stack (nightmare mode).

2. Theme Integration is Chef's Kiss 👨‍🍳

theme={this.props.theme.isDark() ? 'dark' : 'light'}

This is exactly how it should be done! You followed the existing patterns from paint-editor.wrapper.jsx and integrated seamlessly with the theme system. The fact that you went through the AI hallucination gauntlet and then found the elegant solution yourself is a great learning experience (and yeah, we're much better at reviewing than generating 😉🐰).

3. Architectural Consistency
Looking at your file changes:

• Created proper src/components/code-editor/code-editor.jsx component
• Created src/containers/code-editor.jsx container (183 lines!)
• Followed the existing component/container pattern perfectly
• Added proper CSS module at src/components/code-editor/code-editor.css

This shows you really understand the OmniBlocks architecture!

4. Webpack Configuration Updates
You modified webpack.config.js with 27 additions/19 deletions - that's substantive config work to support Monaco. Nice job navigating that complexity!

5. Icon Change
The shift from blocks-specific to generic </> icon makes perfect sense for a multi-language editor. Small detail, big UX impact!

🚀 Your Multi-Filesystem Vision

The three-tier filesystem approach you outlined is chef's kiss:

1. Built-in .omb project format (everything in memory/project file)
2. Local filesystem (traditional IDE)
3. File System Access API (for web without app install)

This is basically replicating VS Code's approach but for OmniBlocks - super smart! The .omb format keeping everything self-contained is particularly clever for shareability.

💡 Things to Consider for Next Steps

Since you're working with @8to16 next, here are some thoughts:

For File System Integration:

• Consider using the showDirectoryPicker() API for local filesystem access (well-supported now)
• For the .omb format, maybe store file tree structure as JSON with file contents as base64/text
• Virtual filesystem in Redux state will need careful consideration for large projects (memory usage)

For Web Workers:

• Moving save logic to workers is smart! Consider also moving language services (linting, formatting) there
• Monaco's language features can be heavy, workers will keep UI snappy

For Vertical Tabs:

• Check out the existing tab pattern - you might be able to extend it
• Consider file explorer, outline view, extensions panel, etc.

Webpack 4 Limitations:

• If Monaco features start breaking, you might eventually need to tackle the React 17 migration (I know it's on the roadmap per the learnings!)
• For now, the downgraded version should work fine

🎯 Cool Technical Details I Noticed

1. You updated src/containers/sb3-downloader.jsx with 12 additions - integrating with project save/load already?
2. Global styles update in src/lib/themes/global-styles.css - theming consistency
3. The text-editor.md documentation is actually really valuable! It captures your thought process and technical decisions. Don't delete it - maybe move it to /docs later!

🎉 Overall

You've got the hard part done - Monaco is integrated, themed, and working! The foundation is solid, and the architecture is clean. The rest is "just" building out the IDE features (file explorer, multi-file editing, etc.), which is more straightforward now that the core editor works.

Can't wait to see how this evolves with @8to16! The Code Editor is going to be a game-changer for OmniBlocks! 🚀

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P.S. - Your documentation style in text-editor.md is refreshingly honest and relatable. The whole "AI hallucination → nap → elegant solution" arc is peak developer experience 😂

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🧠 Learnings used

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-05T01:48:23.435Z
Learning: OmniBlocks/scratch-gui workflow preference: Open tracking issues for CI/automation behavior changes; assign to supervoidcoder; include backlinks to the PR and the exact comment requesting the change.

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Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-05T01:48:23.435Z
Learning: OmniBlocks/scratch-gui: For CI comment hygiene, prefer not mentioning bot/app requesters in the Mega PR Test & Analysis sticky comment; only mention humans. Track such behavior changes via a GitHub issue assigned to supervoidcoder with backlinks to the initiating PR and comment.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-04T16:32:04.480Z
Learning: In OmniBlocks/scratch-gui, supervoidcoder wants to maintain OmniBlocks-specific UltraBox modifications by forking ultrabox_typescript into a separate OmniBlocks/ultrabox repository with clean TypeScript source code, then using GitHub Actions to automatically build and deploy the minified beepbox_editor.min.js to scratch-gui's static/ folder on every push.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-05T16:58:18.936Z
Learning: OmniBlocks/scratch-gui uses ulti.yaml workflow with GitHub Models AI (Mistral-3B via actions/ai-inferencev1) for issue analysis, categorization, duplicate detection, and automated moderation with keyword-based actions like [SPAM], [SECURITY], [CLOSE], [LOCK], [LOCKDOWN].

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Learnt from: github-actions[bot]
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-05T02:01:48.684Z
Learning: OmniBlocks/scratch-gui CI preference: In the "Mega PR Test & Analysis" sticky comment, only @-mention the requester if the actor is a human user; do not @-mention bots to avoid triggering bot back-and-forth and comment spam.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-14T00:47:37.673Z
Learning: The OmniBlocks/scratch-gui repository is taking a phased migration approach to React 19: React 16 → 17 → 18 → 19, starting with React 17 as the easiest first step.

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Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-28T17:30:18.714Z
Learning: OmniBlocks/scratch-gui: Enhanced VRT workflow successfully completed after multiple build fixes involving rimraf/mkdirp PATH issues, working-directory complications, and cache configuration. Final solution uses native shell commands (rm -rf, mkdir -p) with npx webpack instead of npm run build when in subdirectories.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-10-22T20:16:15.537Z
Learning: OmniBlocks/scratch-gui has an existing workflow at .github/workflows/prtest.yml named "Mega PR Test & Analysis".

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-28T03:54:03.336Z
Learning: OmniBlocks/scratch-gui preference: supervoidcoder wants energetic, playful tone in CI sticky comments (emojis, fun copy), while preserving single-comment strategy and not @-mentioning bots.

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Learnt from: github-actions[bot]
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-26T23:17:25.684Z
Learning: OmniBlocks/scratch-gui has an “ESLint Autofix” workflow that can be triggered on PRs by checking the “Auto-fix ESLint issues” box in the sticky comment or commenting `/fix lint`. It lints only changed files, pushes fixes on same-repo branches, and uploads a patch artifact for fork PRs.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-04T03:26:35.542Z
Learning: In OmniBlocks/scratch-gui, supervoidcoder appreciates detailed, thorough technical responses but wants the tone to remain friendly, energetic, and conversational (with emojis and personality) even when processing large amounts of file content or technical context. Avoid shifting to overly formal, stoic, or robotic language when diving deep into technical details.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-01T12:10:19.386Z
Learning: In OmniBlocks/scratch-gui, supervoidcoder prefers a division of labor where Amazon Q handles fast review for ethics and project vision concerns, while CodeRabbit performs deep technical review of code quality, security, architecture, and implementation details.

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Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-29T00:57:49.206Z
Learning: OmniBlocks/scratch-gui: Stale PR Reminder workflow uses GitHub Models AI (gpt-4o-mini) to generate personalized reminders for PRs inactive for 7+ days. Includes PR diff in AI context if < 5KB for better understanding. Posts once per 7 days to avoid spam.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-10-28T03:09:05.973Z
Learning: In the OmniBlocks/scratch-gui repository, supervoidcoder (void) is planning to add a 3D mode and is excited about using PlayCanvas as a full 3D game engine for OmniBlocks.

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Learnt from: github-actions[bot]
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-05T01:50:28.065Z
Learning: OmniBlocks/scratch-gui: When cleaning PR noise, prefer minimizing CodeRabbit auto-generated comments matching headers like "This is an auto-generated reply by CodeRabbit", "Rate Limit Exceeded", and "automated status update", while preserving human-directed conversation.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-26T23:27:18.053Z
Learning: OmniBlocks/scratch-gui VRT workflow: Enhanced visual regression testing includes inline diff images in PR comments (uploaded to vrt-images branch), animated GIFs showing before→after→diff transitions using gifenc, version-controlled baselines stored in vrt-baselines branch organized by PR number, and Playwright video recordings of all test runs uploaded as artifacts.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-10-10T15:23:20.794Z
Learning: OmniBlocks/scratch-gui PR test workflow now ignores bot/AI comments containing the trigger phrase; only human users are allowed to trigger the deployment.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-10-22T19:01:57.123Z
Learning: In the OmniBlocks/scratch-gui repository, team member supervoidcoder can be called "void" in reviews and conversations.

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Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-13T22:43:34.163Z
Learning: In OmniBlocks/scratch-gui, supervoidcoder prefers React over Svelte for UI development (React is the framework they know and want to use consistently).

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 519
File: src/playground/index.ejs:176-176
Timestamp: 2025-12-05T17:47:27.981Z
Learning: In OmniBlocks/scratch-gui, supervoidcoder's Scratch username is scratchcode1_2_3.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-10-22T21:20:08.837Z
Learning: In the OmniBlocks/scratch-gui repository, supervoidcoder (“void”) prefers single, complete PRs over multi-part (“Part 1/2”) submissions. If a split is unavoidable, they want explicit linkage and gating before approval.

---

Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-12-11T17:03:47.901Z
Learning: In OmniBlocks/scratch-gui chaos testing: supervoidcoder prefers NO error filtering in tests - all console errors should be caught and tracked properly with issues, not swept under the rug. Tests should help expose real bugs (like the UltraBox service worker 404) rather than hide them with filters.

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Learnt from: github-actions[bot]
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-11-05T02:00:40.666Z
Learning: In OmniBlocks/scratch-gui, when cleanup is requested, supervoidcoder prefers deletion of CodeRabbit’s spam comments (not just minimizing) on the PR; for non-CodeRabbit bot comments, minimize unless a maintainer explicitly asks for hard deletion.

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Learnt from: supervoidcoder
Repo: OmniBlocks/scratch-gui PR: 0
File: :0-0
Timestamp: 2025-10-22T19:01:57.123Z
Learning: The team members in OmniBlocks/coders include: supervoidcoder, Graison-P (gvyt), ampelectrecuted (amp), NotTheBaton (TheBaton), and kRxZykRxZy.