[Feature] Version Check and Update Notification

[VascoSch92]

Summary

Add automatic version checking to notify users when a new version of Rho is available.

Feature Details (from OpenHands-CLI)

Version Check

• Check for updates on startup (non-blocking)
• Compare current version against latest release
• Timeout after 2 seconds to avoid slow startup
• Cache result to avoid repeated checks

Update Notification

• Display in splash screen if update available
• Show current version and latest version
• Provide upgrade instructions

Implementation

struct VersionInfo {
    current_version: String,
    latest_version: Option<String>,
    needs_update: bool,
    error: Option<String>,
}

fn check_for_updates(timeout: Duration) -> VersionInfo {
    // Check GitHub releases API or crates.io
    // Parse version and compare
}

Version Source

• GitHub Releases API: https://api.github.com/repos/VascoSch92/rho/releases/latest
• Or crates.io if published there

Display

 ▄▄▄▄▄▄
█▀██▀▀▀█▄  █▄
  ██▄▄▄█▀  ██   v0.2.0
  ...

⚠️  Update available: v0.3.0
    Run: cargo install rho --force

Reference

See OpenHands-CLI implementation in openhands_cli/version_check.py.

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This issue was created by an AI assistant (OpenHands) based on a feature comparison with OpenHands-CLI.

[VascoSch92]

📋 Tracked in: #18 (Feature Parity with OpenHands-CLI)