chore: sync from fn-registry agent

format.go

@@ -0,0 +1,93 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"text/tabwriter"
+)
+
+// newTabWriter returns a tabwriter for stdout.
+func newTabWriter() *tabwriter.Writer {
+	return tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
+}
+
+// printTable writes a header + rows to a tabwriter.
+// headers: e.g. []string{"ID", "TITLE", "TYPE"}
+// rows: [][]string
+func printTable(w io.Writer, headers []string, rows [][]string) {
+	tw := tabwriter.NewWriter(w, 0, 0, 2, ' ', 0)
+	fmt.Fprintln(tw, strings.Join(headers, "\t"))
+	for _, row := range rows {
+		fmt.Fprintln(tw, strings.Join(row, "\t"))
+	}
+	tw.Flush()
+}
+
+// printJSON marshals v to JSON and writes to stdout.
+func printJSON(v any) {
+	enc := json.NewEncoder(os.Stdout)
+	enc.SetIndent("", "  ")
+	if err := enc.Encode(v); err != nil {
+		fmt.Fprintln(os.Stderr, "json encode error:", err)
+		os.Exit(1)
+	}
+}
+
+// truncate returns s truncated to maxLen chars, with "..." if truncated.
+func truncate(s string, maxLen int) string {
+	if len(s) <= maxLen {
+		return s
+	}
+	if maxLen <= 3 {
+		return s[:maxLen]
+	}
+	return s[:maxLen-3] + "..."
+}
+
+// depsStatus returns "OK" or "blocked: X,Y" for display.
+func depsStatus(issue Issue) string {
+	if len(issue.Depends) == 0 {
+		return "OK"
+	}
+	if issue.DepsResolved {
+		return "OK"
+	}
+	return "blocked: " + strings.Join(issue.Depends, ",")
+}
+
+// joinStrings joins a slice with commas, or returns "-" if empty.
+func joinStrings(ss []string) string {
+	if len(ss) == 0 {
+		return "-"
+	}
+	return strings.Join(ss, ",")
+}
+
+// pctBar returns a compact string like "75%" or "0%".
+func pctBar(p int) string {
+	return fmt.Sprintf("%d%%", p)
+}
+
+// statusShort normalizes status for display.
+func statusShort(s string) string {
+	switch strings.ToLower(s) {
+	case "in-progress":
+		return "in-progress"
+	case "completado", "done", "completed":
+		return "completado"
+	case "pendiente", "pending":
+		return "pendiente"
+	case "bloqueado", "blocked":
+		return "bloqueado"
+	case "deferred":
+		return "deferred"
+	default:
+		if s == "" {
+			return "-"
+		}
+		return s
+	}
+}