feat(ai): add max thinking level

packages/ai/test/codex-websocket-cached-probe.ts

@@ -19,7 +19,7 @@ import {
 import { getModel } from "../src/compat.ts";
 import type { AssistantMessage, Context, Message, Model, Tool, ToolResultMessage, Transport } from "../src/types.ts";
 
-type ThinkingLevel = "minimal" | "low" | "medium" | "high" | "xhigh";
+type ThinkingLevel = "minimal" | "low" | "medium" | "high" | "xhigh" | "max";
 
 interface Args {
 	turns: number;
@@ -58,7 +58,14 @@ function parseArgs(argv: string[]): Args {
 				break;
 			case "--reasoning": {
 				const value = required(argv[++i], arg);
-				if (value !== "minimal" && value !== "low" && value !== "medium" && value !== "high" && value !== "xhigh") {
+				if (
+					value !== "minimal" &&
+					value !== "low" &&
+					value !== "medium" &&
+					value !== "high" &&
+					value !== "xhigh" &&
+					value !== "max"
+				) {
 					throw new Error(`Invalid --reasoning: ${value}`);
 				}
 				reasoning = value;
@@ -90,7 +97,7 @@ function printHelp(): void {
 Options:
   --turns <n>          Number of user turns. Default: ${DEFAULT_TURNS}
   --transport <mode>   sse | websocket | websocket-cached | auto. Default: websocket-cached
-  --reasoning <level>  minimal | low | medium | high | xhigh. Default: low
+  --reasoning <level>  minimal | low | medium | high | xhigh | max. Default: low
   --max-tokens <n>     Max output tokens per model request. Default: ${DEFAULT_MAX_TOKENS}
   --session-id <id>    Session id for websocket/cache state
 `);