Paint App Quick Checklist

Pre-Flight

• Compiles without errors
• App starts
• Can connect to backend

Features

1. Basic Drawing

• Set display name + avatar color
• Create/join canvases
• Brush draws, eraser erases
• Color picker works
• Strokes sync in real-time ⭐

2. Live Cursors

• See others' cursors
• Cursors show name + color
• Cursor shows tool icon
• Smooth cursor movement ⭐
• Fade on inactive

3. Shapes

• Rectangle, ellipse, line work
• Stroke/fill colors
• Shapes sync to others

4. Selection

• Can select elements
• Move/resize/delete
• See others' selections ⭐
• Drag syncs in real-time

5. Layers + Locking

• Multiple layers work
• Reorder, visibility, opacity
• Lock shows "Locked by X" ⭐
• Only locker can edit
• Auto-unlock on leave ⭐

6. Presence

• User list on canvas
• Status: active/idle/away ⭐
• Shows current tool
• Auto-away works ⭐

7. Comments

• Pin comments on canvas
• Threaded replies
• Resolve/unresolve
• Click to pan
• Real-time sync

8. Version History

• Auto-save works
• Manual save works
• Can view versions
• Can restore versions

9. Permissions

• Owner sets roles
• Viewers can't draw
• Instant role change ⭐
• Kick is immediate ⭐

10. Follow Mode

• Can follow a user
• Viewport syncs real-time ⭐
• Manual action unfollows
• Multiple can follow one

11. Activity Feed

• Shows action log
• Updates in real-time ⭐
• Click to pan
• Auto-removes old entries

12. Sharing

• Private by default
• Share link works
• Link permissions work
• Can revoke link

13. Canvas Chat

• Chat panel works
• Typing indicator ⭐
• History persists
• Notification badge

14. Auto-Cleanup

• Scheduled deletion works ⭐
• Warning before delete
• Activity resets timer
• "Keep Forever" works

15. Text & Stickies

• Text tool works
• Sticky notes work
• "Editing" indicator ⭐
• Syncs in real-time

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Score Summary

Feature	Score (0-3)
1. Basic Drawing
2. Live Cursors
3. Shapes
4. Selection
5. Layers + Locking
6. Presence
7. Comments
8. Version History
9. Permissions
10. Follow Mode
11. Activity Feed
12. Sharing
13. Canvas Chat
14. Auto-Cleanup
15. Text & Stickies
TOTAL	/45

⭐ = Key differentiator (tests STDB advantage)