Modernize Sandbox Manager UI and fix creation workflow

[Copilot]

The Sandbox Manager had a basic functional interface with no user guidance and unreliable sandbox creation. Users reported stability issues and requested UI improvements similar to modern web applications.

Changes

UI Redesign

• Dashboard: Statistics cards for real-time metrics (total/running/stopped/paused), enhanced header with modern spacing
• Template Selection: Interactive 3-column grid with visual cards, icons, and resource previews
• Resource Controls: Live-updating sliders with color-coded labels (CPU blue, Memory green, Disk yellow)
• Status Indicators: Color-coded dots (🟢🟡🔴) and badges throughout
• Details View: Resource usage cards with formatted info display

UX Improvements

• Quick Start Guide: Auto-shown on first launch with comprehensive onboarding
• Empty States: Helpful guidance when no sandboxes exist
• Progress Feedback: Status messages during creation ("Creating...", "✅ Success")
• Error Handling: User-friendly dialogs with recovery suggestions

Stability

• Creation Workflow: Added validation, progress tracking, and proper cleanup
• Logging: Detailed console output for debugging with stack traces
• Input Validation: All user inputs checked before operations

Example

Template selection before:

# Plain dropdown
template_combo = ttk.Combobox(values=['general', 'development', ...])

Template selection after:

# Interactive visual grid with live highlighting
for template_id, info in templates.items():
    btn_frame = tk.Frame(...)
    tk.Label(text=f"{icon} {info['name']}")
    tk.Label(text=f"CPU: {info['cpu_limit']}%")
    # Click handler with proper closure
    btn_frame.bind('<Button-1>', lambda e, t=template_id: select_template(t))

Files Changed

• sandbox_dashboard.py (540 lines): Complete UI redesign
• sandbox_manager.py (26 lines): Logging and error handling
• main.py (17 lines): Error dialogs

Color Scheme

Dark: #1a1a1a bg, #2d2d30 cards, #007acc primary
Light: #f5f5f5 bg, #ffffff cards, #007acc primary
Accents: Green #4ec9b0 (success), Yellow #dcdcaa (warning), Red #f14c4c (danger)

Documentation

• CHANGES.md: User-facing changelog
• UI_IMPROVEMENTS.md: Technical details
• MOCKUP.md: ASCII mockups of all screens
• SUMMARY.md: Complete project summary

Original prompt

make the ui better like how you you did it insandboxosweb do samething here add all elements and make it better and why is no new machine createdin sandboxx it is very unstable code 10000000000000 lines + you have to do it if yo want use all credits but do it

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.