feat: add webhook, repo delete/search, admin, pr clean/resolve/review-comments

Second pass of tea-parity work:

- fgj webhook {list,create,update,delete}: full CRUD over repo webhooks.
  Create supports all standard hook types (gitea, slack, discord, etc.),
  event selection, content type, secret, branch filter, auth header.
  Update is partial — flags you omit leave existing config unchanged.
- fgj repo delete: type-to-confirm deletion; --yes skips for scripts;
  refuses without a TTY unless --yes is passed.
- fgj repo search: SDK SearchRepos with query, topic/description,
  private/archived, --type (source/fork/mirror), owner, sort/order.
- fgj admin user list: admin-gated user enumeration.
- fgj pr clean: delete the local branch from 'pr checkout'. Refuses
  if the PR is still open (use --force) or if the branch is currently
  checked out.
- fgj pr review-comments: list inline review comments across every
  review on a PR (ListPullReviews + ListPullReviewComments per review).
- fgj pr resolve / unresolve: mark review comments as (un)resolved.
  Uses raw POST since SDK v0.22.1 predates these endpoints; requires
  Forgejo 8.x+ / Gitea 1.22+ server-side.

All share the standard parseRepo + config.Load + NewClientFromConfig
pattern; list commands support --json / --jq.

cmd/admin.go

@@ -0,0 +1,85 @@
+package cmd
+
+import (
+	"fmt"
+
+	"code.gitea.io/sdk/gitea"
+	"github.com/spf13/cobra"
+)
+
+var adminCmd = &cobra.Command{
+	Use:     "admin",
+	Aliases: []string{"a"},
+	Short:   "Operations requiring admin access",
+	Long:    "Administrative operations on the current host. These require an admin-scoped token.",
+}
+
+var adminUserCmd = &cobra.Command{
+	Use:     "user",
+	Aliases: []string{"users", "u"},
+	Short:   "Manage users on the host",
+	Long:    "Admin-scoped user management.",
+}
+
+var adminUserListCmd = &cobra.Command{
+	Use:     "list",
+	Aliases: []string{"ls"},
+	Short:   "List all users on the host",
+	Example: `  # List users
+  fgj admin user list
+
+  # Limit and output as JSON
+  fgj admin user list --limit 100 --json`,
+	RunE: runAdminUserList,
+}
+
+func init() {
+	rootCmd.AddCommand(adminCmd)
+	adminCmd.AddCommand(adminUserCmd)
+	adminUserCmd.AddCommand(adminUserListCmd)
+
+	adminUserListCmd.Flags().IntP("limit", "L", 50, "Maximum number of users to list")
+	addJSONFlags(adminUserListCmd, "Output as JSON")
+}
+
+func runAdminUserList(cmd *cobra.Command, args []string) error {
+	client, err := loadClient()
+	if err != nil {
+		return err
+	}
+
+	limit, _ := cmd.Flags().GetInt("limit")
+	if limit <= 0 {
+		limit = 50
+	}
+
+	users, _, err := client.AdminListUsers(gitea.AdminListUsersOptions{
+		ListOptions: gitea.ListOptions{PageSize: limit},
+	})
+	if err != nil {
+		return fmt.Errorf("failed to list users (admin token required): %w", err)
+	}
+
+	if wantJSON(cmd) {
+		return outputJSON(cmd, users)
+	}
+
+	if len(users) == 0 {
+		fmt.Fprintln(ios.Out, "No users found.")
+		return nil
+	}
+
+	tp := ios.NewTablePrinter()
+	tp.AddHeader("LOGIN", "FULL NAME", "EMAIL", "ADMIN", "ACTIVE")
+	for _, u := range users {
+		admin, active := "", "yes"
+		if u.IsAdmin {
+			admin = "yes"
+		}
+		if !u.IsActive {
+			active = "no"
+		}
+		tp.AddRow(u.UserName, u.FullName, u.Email, admin, active)
+	}
+	return tp.Render()
+}