feat: dev cli in go

[shadowfax92]

No description provided.

[shadowfax92]

@greptileai review pls

[greptile-apps]

Greptile Summary

This PR implements a comprehensive Go-based CLI tool (bros) to replace existing build and development tooling, adding ~9000 lines of production-quality code across 59 files.

Major Components:

• Build Pipeline: Complete Chromium build orchestration with modular phases (setup, prep, build, sign, package, upload)
• Dev Tools: Patch development workflow with feature classification, annotation, and git integration
• Release Automation: GitHub release creation, artifact management, and R2 storage integration
• OTA Updates: Sparkle-based update system with appcast generation and binary signing
• Cross-Platform Signing: macOS notarization, Windows eSigner integration, and Linux packaging

Code Quality:

• Well-structured with clear separation of concerns
• Comprehensive error handling with custom exit codes
• Unit tests for critical components (R2 client, appcast generation, version comparison)
• Proper resource cleanup with defer statements throughout
• Environment variable management with .env file support

Key Features:

• Modular build system with 19+ configurable modules
• Multi-platform support (macOS arm64/x64, Windows, Linux)
• Universal binary creation for macOS
• Cloudflare R2 integration for artifact storage
• GitHub CLI integration for release automation

Confidence Score: 4/5

• This PR is safe to merge with minor considerations for production deployment
• The implementation is well-structured with good error handling, proper resource cleanup, and unit tests for critical components. Code follows Go best practices with clear separation of concerns. Score is 4 (not 5) due to the large scope (~9000 lines), sensitive credential handling in signing operations, and platform-specific code that requires testing across all target environments before production use
• Pay close attention to credential-handling files (sign_macos.go, sign_windows_impl.go, sign_binary.go) and ensure proper secrets management in production environments

Important Files Changed

Filename	Overview
packages/browseros/tools/bros/cmd/root.go	Implements root command using Cobra with proper silence settings for clean output
packages/browseros/tools/bros/cmd/build.go	Adds build command with comprehensive flags for phases, modules, and configuration
packages/browseros/tools/bros/cmd/dev.go	Implements patch development commands with feature management and annotation support
packages/browseros/tools/bros/cmd/release.go	Implements release automation with GitHub, appcast, and OTA commands
packages/browseros/tools/bros/internal/native/r2/client.go	Implements Cloudflare R2 client with S3-compatible operations and version sorting
packages/browseros/tools/bros/internal/native/build/run.go	Orchestrates build pipeline with module execution and phase-based organization
packages/browseros/tools/bros/internal/native/build/modules.go	Implements all build modules from git setup through compilation and packaging
packages/browseros/tools/bros/internal/native/build/sign_macos.go	Implements macOS code signing and notarization with proper credential handling
packages/browseros/tools/bros/internal/native/build/sign_windows_impl.go	Implements Windows code signing using eSigner with TOTP authentication
packages/browseros/tools/bros/internal/native/ota/sign_binary.go	Signs and notarizes binaries for all platforms with proper credential validation
packages/browseros/tools/bros/internal/native/release/github.go	Creates GitHub releases with artifact uploads using gh CLI

Flowchart

flowchart TD
    Start([bros CLI]) --> Root{Command}
    
    Root -->|build| Build[Build Command]
    Root -->|dev| Dev[Dev Command]
    Root -->|release| Release[Release Command]
    Root -->|ota| OTA[OTA Command]
    
    Build --> BuildMode{Mode}
    BuildMode -->|--config| ConfigMode[YAML Config]
    BuildMode -->|--modules| ModulesMode[Module List]
    BuildMode -->|phase flags| PhaseMode[Phase Flags]
    
    ConfigMode --> BuildCtx[Build Context]
    ModulesMode --> BuildCtx
    PhaseMode --> BuildCtx
    
    BuildCtx --> Pipeline[Module Pipeline]
    Pipeline --> Setup[Setup Phase]
    Pipeline --> Prep[Prep Phase]
    Pipeline --> BuildPhase[Build Phase]
    Pipeline --> Sign[Sign Phase]
    Pipeline --> Package[Package Phase]
    Pipeline --> Upload[Upload Phase]
    
    Setup --> GitSetup[Git Setup]
    Setup --> SparkleSetup[Sparkle Setup]
    
    Prep --> Patches[Apply Patches]
    Prep --> Resources[Copy Resources]
    Prep --> Configure[GN Configure]
    
    BuildPhase --> Compile[Autoninja Compile]
    
    Sign --> SignOS{OS}
    SignOS -->|macOS| SignMac[Code Sign + Notarize]
    SignOS -->|Windows| SignWin[eSigner + TOTP]
    SignOS -->|Linux| SignLinux[No-op]
    
    Package --> PackageOS{OS}
    PackageOS -->|macOS| DMG[Create DMG]
    PackageOS -->|Windows| Installer[Mini Installer]
    PackageOS -->|Linux| AppImage[AppImage + deb]
    
    Upload --> R2Upload[Upload to R2]
    
    Dev --> DevCmd{Subcommand}
    DevCmd -->|status| DevStatus[Show Status]
    DevCmd -->|annotate| DevAnnotate[Create Commits]
    DevCmd -->|feature| DevFeature[Feature Mgmt]
    
    DevFeature --> FeatureList[List Features]
    DevFeature --> FeatureShow[Show Feature]
    DevFeature --> FeatureAdd[Add/Update]
    DevFeature --> FeatureClassify[Classify Patches]
    
    Release --> ReleaseCmd{Subcommand}
    ReleaseCmd -->|list| ReleaseList[List Versions]
    ReleaseCmd -->|appcast| Appcast[Generate XML]
    ReleaseCmd -->|publish| Publish[Publish to CDN]
    ReleaseCmd -->|download| Download[Download Artifacts]
    ReleaseCmd -->|github| GitHub[GitHub Release]
    
    GitHub --> GHCreate[Create Release]
    GHCreate --> GHUpload[Upload Assets]
    
    OTA --> OTACmd{Subcommand}
    OTACmd -->|server release| ServerRelease[Server OTA]
    OTACmd -->|publish-appcast| PublishAppcast[Publish Appcast]
    OTACmd -->|test-signing| TestSign[Test Signing]
    
    ServerRelease --> SignBinary[Sign Binary]
    ServerRelease --> CreateZip[Create Zip]
    ServerRelease --> SparkleSign[Sparkle Sign]
    ServerRelease --> UploadOTA[Upload to R2]
    
    R2Upload --> R2[Cloudflare R2]
    UploadOTA --> R2
    Publish --> R2
    Download --> R2

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_{Last reviewed commit: d215ff5}