refactor(output): share the JSON, created-resource and batch tails

Mutations end with a.jsonResult or a.created instead of hand-rolled
--json branches, the two identical jsonResult/writeMutationJSON helpers
become one, and writeBatchJSON checks --json itself so batch commands
share one tail.

Signed-off-by: bircni <bircni@icloud.com>

internal/app/repo_mutations.go

@@ -278,7 +278,7 @@ $ tea repo clone alice/project -- --branch develop --recurse-submodules`,
 			if _, err := a.cloneRepository(cmd, t, item, opts); err != nil {
 				return err
 			}
-			return a.writeMutationJSON(cmd, item)
+			return a.jsonResult(cmd, item)
 		},
 	}
 	command.Flags().IntVarP(&opts.depth, "depth", "d", 0, "Number of commits to fetch (0: full history)")
@@ -352,10 +352,7 @@ $ tea repo fork alice/project --clone -- --depth 1`,
 					return err
 				}
 			}
-			if a.options.json != "" {
-				return a.writeJSON(cmd, fork)
-			}
-			return a.printURL(cmd, fork.URL)
+			return a.created(cmd, fork, fork.URL)
 		},
 	}
 	command.Flags().StringVar(&opts.Organization, "org", "", "Fork into this organization")
@@ -552,7 +549,7 @@ $ tea repo archive alice/old-project --yes`,
 			} else {
 				a.warn(cmd, "%s is not archived", item.FullName)
 			}
-			return a.writeMutationJSON(cmd, item)
+			return a.jsonResult(cmd, item)
 		}
 		if archive {
 			if err := a.confirmAction(cmd, terminal.Confirmation{Prompt: "Archive " + t.Repo + inferred + "? It becomes read-only.", NonTTY: "archive " + t.Repo}); err != nil {
@@ -568,20 +565,12 @@ $ tea repo archive alice/old-project --yes`,
 		} else {
 			a.done(cmd, "Unarchived repository %s", item.FullName)
 		}
-		return a.writeMutationJSON(cmd, item)
+		return a.jsonResult(cmd, item)
 	}
 	command.ValidArgsFunction = a.completeRepos()
 	return command
 }
 
-// writeMutationJSON writes the result of a mutation with --json; people get done lines instead.
-func (a *application) writeMutationJSON(cmd *cobra.Command, item any) error {
-	if a.options.json == "" {
-		return nil
-	}
-	return a.writeJSON(cmd, item)
-}
-
 func (a *application) repoRenameCommand() *cobra.Command {
 	command := &cobra.Command{
 		Use:   "rename <new-name>",
@@ -624,7 +613,7 @@ $ tea repo rename new-name -R alice/old-name`,
 			if remote, ok := strings.CutPrefix(t.RepoSource, "remote "); ok {
 				a.warn(cmd, "Git remote %s still points to %s; update it with git remote set-url", remote, t.Repo)
 			}
-			return a.writeMutationJSON(cmd, item)
+			return a.jsonResult(cmd, item)
 		},
 	}
 	return command