refactor(cli): share commander reparse helper

src/cli/program/action-reparse.ts

@@ -0,0 +1,22 @@
+import type { Command } from "commander";
+import { buildParseArgv } from "../argv.js";
+import { resolveActionArgs } from "./helpers.js";
+
+export async function reparseProgramFromActionArgs(
+  program: Command,
+  actionArgs: unknown[],
+): Promise<void> {
+  const actionCommand = actionArgs.at(-1) as Command | undefined;
+  const root = actionCommand?.parent ?? program;
+  const rawArgs = (root as Command & { rawArgs?: string[] }).rawArgs;
+  const actionArgsList = resolveActionArgs(actionCommand);
+  const fallbackArgv = actionCommand?.name()
+    ? [actionCommand.name(), ...actionArgsList]
+    : actionArgsList;
+  const parseArgv = buildParseArgv({
+    programName: program.name(),
+    rawArgs,
+    fallbackArgv,
+  });
+  await program.parseAsync(parseArgv);
+}