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/telegram/accounts.ts

@@ -1,11 +1,12 @@
 import type { ClawdbotConfig } from "../config/config.js";
 import type { TelegramAccountConfig } from "../config/types.js";
+import { isTruthyEnvValue } from "../infra/env.js";
 import { listBoundAccountIds, resolveDefaultAgentBoundAccountId } from "../routing/bindings.js";
 import { DEFAULT_ACCOUNT_ID, normalizeAccountId } from "../routing/session-key.js";
 import { resolveTelegramToken } from "./token.js";
 
 const debugAccounts = (...args: unknown[]) => {
-  if (process.env.CLAWDBOT_DEBUG_TELEGRAM_ACCOUNTS === "1") {
+  if (isTruthyEnvValue(process.env.CLAWDBOT_DEBUG_TELEGRAM_ACCOUNTS)) {
     console.warn("[telegram:accounts]", ...args);
   }
 };