2x Faster CLI Startup & Smarter Project Detection

Patch Changes

• #1523 fc1a79f Thanks @Crunchyman-ralph! - Codex cli Validate reasoning effort against model capabilities

  • Add provider-level reasoning effort validation for OpenAI models
  • Automatically cap unsupported effort levels (e.g., 'xhigh' on gpt-5.1 and gpt-5 becomes 'high')

• #1549 98087ac Thanks @Crunchyman-ralph! - Improve CLI startup speed by 2x

• #1545 a0007a3 Thanks @Crunchyman-ralph! - Smarter project root detection with boundary markers

  • Prevents Task Master from incorrectly detecting .taskmaster folders in your home directory when working inside a different project
  • Now stops at project boundaries (.git, package.json, lock files) instead of searching all the way up to the filesystem root
  • Adds support for monorepo markers (lerna.json, nx.json, turbo.json) and additional lock files (bun.lockb, deno.lock)

• #1523 fc1a79f Thanks @Crunchyman-ralph! - Improve json schemas for ai-related commands making it more compatible with openai models

• #1542 b817d6f Thanks @mdimitrovg! - Fixed vertex-ai authentication when using service account and vertex location env variable.