fix(cli): Accept warning as hidden log-level alias

Preserve backwards compatibility for existing scripts that pass
--log-level warning while keeping help output focused on the
internal warn level token.

Map warning to warn during argument coercion in both the main
and lightweight yargs app builders so init/setup and normal CLI
execution behave consistently.

Author: cameroncooke

src/cli.ts

@@ -49,6 +49,10 @@ async function buildLightweightYargsApp(): Promise<ReturnType<typeof import('yar
       type: 'string',
       describe: 'Set log verbosity level',
       choices: ['none', 'error', 'warn', 'info', 'debug'] as const,
+      coerce: (value: unknown) => {
+        if (typeof value !== 'string') return value;
+        return value.trim().toLowerCase() === 'warning' ? 'warn' : value;
+      },
       default: 'none',
     })
     .option('style', {

src/cli/yargs-app.ts

@@ -45,6 +45,10 @@ export function buildYargsApp(opts: YargsAppOptions): ReturnType<typeof yargs> {
       type: 'string',
       describe: 'Set log verbosity level',
       choices: ['none', 'error', 'warn', 'info', 'debug'] as const,
+      coerce: (value: unknown) => {
+        if (typeof value !== 'string') return value;
+        return value.trim().toLowerCase() === 'warning' ? 'warn' : value;
+      },
       default: 'none',
     })
     .option('style', {