refactor: install optional channels for directory

src/cli/directory-cli.ts

@@ -1,7 +1,8 @@
 import type { Command } from "commander";
 import { resolveChannelDefaultAccountId } from "../channels/plugins/helpers.js";
 import { getChannelPlugin } from "../channels/plugins/index.js";
-import { loadConfig } from "../config/config.js";
+import { resolveInstallableChannelPlugin } from "../commands/channel-setup/channel-plugin-resolution.js";
+import { loadConfig, writeConfigFile } from "../config/config.js";
 import { danger } from "../globals.js";
 import { resolveMessageChannelSelection } from "../infra/outbound/channel-selection.js";
 import { defaultRuntime } from "../runtime.js";
@@ -96,13 +97,32 @@ export function registerDirectoryCli(program: Command) {
       .option("--json", "Output JSON", false);
 
   const resolve = async (opts: { channel?: string; account?: string }) => {
-    const cfg = loadConfig();
-    const selection = await resolveMessageChannelSelection({
-      cfg,
-      channel: opts.channel ?? null,
-    });
+    let cfg = loadConfig();
+    const explicitChannel = opts.channel?.trim();
+    const resolvedExplicit = explicitChannel
+      ? await resolveInstallableChannelPlugin({
+          cfg,
+          runtime: defaultRuntime,
+          rawChannel: explicitChannel,
+          allowInstall: true,
+          supports: (plugin) => Boolean(plugin.directory),
+        })
+      : null;
+    if (resolvedExplicit?.configChanged) {
+      cfg = resolvedExplicit.cfg;
+      await writeConfigFile(cfg);
+    }
+    const selection = explicitChannel
+      ? {
+          channel: resolvedExplicit?.channelId,
+        }
+      : await resolveMessageChannelSelection({
+          cfg,
+          channel: opts.channel ?? null,
+        });
     const channelId = selection.channel;
-    const plugin = getChannelPlugin(channelId);
+    const plugin =
+      resolvedExplicit?.plugin ?? (channelId ? getChannelPlugin(channelId) : undefined);
     if (!plugin) {
       throw new Error(`Unsupported channel: ${String(channelId)}`);
     }