Harden release publication plumbing

internal/cli/root.go

@@ -7,6 +7,7 @@ import (
 	"io"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/app"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/buildinfo"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/config"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/report"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
@@ -16,6 +17,7 @@ const helpText = `weatherreporter prepares weather reports from normalized forec
 
 Usage:
   weatherreporter --help
+  weatherreporter --version
   weatherreporter generate daily --date YYYY-MM-DD [--config PATH] [--units VALUE] [--tz NAME] [--out PATH] [--llm-debug-dir PATH] [--quiet]
   weatherreporter generate today [--config PATH] [--units VALUE] [--tz NAME] [--out PATH] [--date YYYY-MM-DD] [--llm-debug-dir PATH] [--quiet]
   weatherreporter generate tomorrow [--config PATH] [--units VALUE] [--tz NAME] [--out PATH] [--llm-debug-dir PATH] [--quiet]
@@ -31,6 +33,7 @@ Usage:
 
 Options:
   -h, --help       Show this help message.
+  --version        Show the Weatherreporter version.
   --config PATH    Load configuration from PATH instead of /usr/local/etc/weatherreporter/config.yml.
   --units VALUE    Override weather API units.
   --tz NAME        Override weather API timezone.
@@ -43,6 +46,7 @@ Options:
 type Runner struct {
 	Clock           timeutil.Clock
 	ExecutorFactory ExecutorFactory
+	Version         string
 }
 
 func Run(ctx context.Context, args []string, stdout io.Writer, stderr io.Writer) error {
@@ -57,6 +61,17 @@ func (r Runner) Run(ctx context.Context, args []string, stdout io.Writer, stderr
 		_, err := fmt.Fprint(stdout, helpText)
 		return err
 	}
+	if args[0] == "--version" {
+		if len(args) != 1 {
+			return fmt.Errorf("--version does not accept arguments")
+		}
+		version := r.Version
+		if version == "" {
+			version = buildinfo.Version
+		}
+		_, err := fmt.Fprintf(stdout, "weatherreporter %s\n", version)
+		return err
+	}
 
 	switch args[0] {
 	case "generate":