Add auto-update system for release builds #1
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Implements automatic update checking and installation for end users: - Adds src/update.rs module with GitHub Releases API integration - Release builds (built by CI) auto-check for updates on startup - Developer builds (local cargo build) never auto-update - Includes crash loop detection with automatic rollback - Supports both developer mode (git pull) and release mode (GitHub download) - Adds GitHub Actions workflow for building release binaries Key features: - Only binaries with JCODE_RELEASE_BUILD=1 get auto-updated - Atomic install via temp file + symlink swap - SHA256 checksum verification for downloads - 24-hour cooldown between update checks - --no-update flag to skip update check - --auto-update flag to install updates automatically - `jcode update` command for manual updates
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Summary
Implements automatic update checking and installation for end users who install jcode from GitHub Releases.
Key design decisions:
JCODE_RELEASE_BUILD=1) get auto-updatedcargo build) never auto-updateFeatures
git pull+cargo build(for repo checkouts)--no-update: Skip update check--auto-update: Auto-install updates (default: just notify)jcode update: Manual update commandFiles changed
src/update.rs: New module with GitHub API client, download logic, crash detectionbuild.rs: EmbedsJCODE_RELEASE_BUILDflag at compile timesrc/main.rs: Integrates update check into startup flow.github/workflows/release.yml: CI workflow for building release binariesTest plan
jcode updateworks in developer mode (git pull + build)