Initial commit: gtea CLI tool

Go CLI that wraps the Gitea API and git to create repos, commit,
push, and pull without leaving the terminal.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/config.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+var configCmd = &cobra.Command{
+	Use:   "config",
+	Short: "Set your Gitea URL, username, and API token",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		reader := bufio.NewReader(os.Stdin)
+
+		cfg := &Config{}
+		if existing, err := loadConfig(); err == nil {
+			*cfg = *existing
+		}
+
+		cfg.URL = prompt(reader, fmt.Sprintf("Gitea URL [%s]", cfg.URL), cfg.URL)
+		cfg.Username = prompt(reader, fmt.Sprintf("Username [%s]", cfg.Username), cfg.Username)
+		cfg.Token = prompt(reader, fmt.Sprintf("API Token [%s]", maskToken(cfg.Token)), cfg.Token)
+
+		if err := saveConfig(cfg); err != nil {
+			return fmt.Errorf("saving config: %w", err)
+		}
+		fmt.Println("Config saved to", configPath())
+		return nil
+	},
+}
+
+func prompt(reader *bufio.Reader, label, fallback string) string {
+	fmt.Printf("%s: ", label)
+	input, _ := reader.ReadString('\n')
+	input = strings.TrimSpace(input)
+	if input == "" {
+		return fallback
+	}
+	return input
+}
+
+func maskToken(t string) string {
+	if len(t) < 4 {
+		return "****"
+	}
+	return t[:4] + "****"
+}