added git ssh support and ablity to download repo via zip, tar.gz, and bundle

internal/config/config.go

@@ -44,6 +44,10 @@ type Config struct {
 	// OCI Registry
 	OCIRoot string
 
+	// SSH server
+	SSHPort        string // env: SSH_PORT, default "2222"
+	SSHHostKeyPath string // env: SSH_HOST_KEY_PATH, empty = generate ephemeral
+
 	// Dev
 	Debug bool
 }
@@ -68,6 +72,9 @@ func Load() (*Config, error) {
 	cfg.SessionSecret = requireEnv("SESSION_SECRET", &missing)
 	cfg.CSRFSecret = requireEnv("CSRF_SECRET", &missing)
 
+	cfg.SSHPort = getEnv("SSH_PORT", "2222")
+	cfg.SSHHostKeyPath = os.Getenv("SSH_HOST_KEY_PATH")
+
 	// Optional signing key
 	cfg.ArtifactSigningKey = os.Getenv("ARTIFACT_SIGNING_KEY")
 	cfg.OCIRoot = getEnv("OCI_ROOT", filepath.Join(filepath.Dir(cfg.RepoRoot), "oci"))