fix: formatting and error message capitalization

- Run go fmt on modules/api/types.go to fix struct alignment
- Use lowercase error messages to match codebase conventions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/actions/jobs.go

@@ -33,12 +33,12 @@ func RunActionJobs(ctx stdctx.Context, cmd *cli.Command) error {
 	c.Ensure(context.CtxRequirement{RemoteRepo: true})
 
 	if cmd.Args().Len() < 1 {
-		return fmt.Errorf("Run ID is required")
+		return fmt.Errorf("run ID is required")
 	}
 
 	runID, err := utils.ArgToIndex(cmd.Args().First())
 	if err != nil {
-		return fmt.Errorf("Invalid run ID: %w", err)
+		return fmt.Errorf("invalid run ID: %w", err)
 	}
 
 	client := api.NewClient(c.Login)