sequenceDiagram
    participant Dev as Developer
    participant GH as GitHub (main)
    participant CI as CI Workflow
    participant DV as detect-version
    participant TB as test-build
    participant AMD as build-amd64
    participant ARM as build-ghcr-arm64
    participant ECR as AWS ECR
    participant GHCR as GitHub Container Registry
    participant MF as create-ghcr-manifests

    Dev->>GH: Push commit (e.g., "v0.5.24: new feature")
    GH->>CI: Trigger CI workflow
    
    par Run Tests and Detect Version
        CI->>TB: Run tests and build
        CI->>DV: Extract version from commit message
        DV->>DV: Check if commit matches ^(v[0-9]+\.[0-9]+\.[0-9]+):
        alt Version commit on main
            DV->>DV: Set is_release=true, version=v0.5.24
        else Not a version commit
            DV->>DV: Set is_release=false
        end
    end

    TB-->>CI: Tests passed ✓
    DV-->>CI: Version detected (if applicable)

    par Build AMD64 and ARM64
        CI->>AMD: Build AMD64 images (3 services)
        Note over AMD: Uses BuildKit cache mounts<br/>for faster bun install
        AMD->>ECR: Push latest/staging + SHA tags
        alt Main branch
            AMD->>GHCR: Push latest-amd64 + SHA-amd64
            alt is_release=true
                AMD->>GHCR: Push v0.5.24-amd64
            end
        end
        
        CI->>ARM: Build ARM64 images (3 services)
        Note over ARM: Uses BuildKit cache mounts<br/>for faster bun install
        ARM->>GHCR: Push latest-arm64 + SHA-arm64
        alt is_release=true
            ARM->>GHCR: Push v0.5.24-arm64
        end
    end

    AMD-->>CI: AMD64 builds complete
    ARM-->>CI: ARM64 builds complete

    CI->>MF: Create multi-arch manifests
    MF->>GHCR: Create manifest for latest tag
    MF->>GHCR: Create manifest for SHA tag
    alt is_release=true
        MF->>GHCR: Create manifest for v0.5.24 tag
    end
    MF-->>CI: Manifests created ✓