CLI: streamline startup paths and env parsing

Add shared parseBooleanValue()/isTruthyEnvValue() and apply across CLI, gateway, memory, and live-test flags for consistent env handling.
Introduce route-first fast paths, lazy subcommand registration, and deferred plugin loading to reduce CLI startup overhead.
Centralize config validation via ensureConfigReady() and add config caching/deferred shell env fallback for fewer IO passes.
Harden logger initialization/imports and add focused tests for argv, boolean parsing, frontmatter, and CLI subcommands.

src/cli/channel-options.ts

@@ -0,0 +1,16 @@
+import { CHAT_CHANNEL_ORDER } from "../channels/registry.js";
+import { listChannelPlugins } from "../channels/plugins/index.js";
+import { isTruthyEnvValue } from "../infra/env.js";
+import { ensurePluginRegistryLoaded } from "./plugin-registry.js";
+
+export function resolveCliChannelOptions(): string[] {
+  if (isTruthyEnvValue(process.env.CLAWDBOT_EAGER_CHANNEL_OPTIONS)) {
+    ensurePluginRegistryLoaded();
+    return listChannelPlugins().map((plugin) => plugin.id);
+  }
+  return [...CHAT_CHANNEL_ORDER];
+}
+
+export function formatCliChannelOptions(extra: string[] = []): string {
+  return [...extra, ...resolveCliChannelOptions()].join("|");
+}