Add persistent user preference recall across Codex CLI conversations

Agreed that a lot of this is covered once you map the Codex surfaces correctly. The docs make the split clearer than the mental model people often start with:

• AGENTS.md for durable instructions, globally or per repo
• skills for reusable workflows that should trigger on a task
• MCP for external memory/tools/context
• memories for lightweight carried-forward context, where enabled
• snippets/custom saved prompts for repeated phrasing or commands

The nuance I’d still preserve is that these solve slightly different problems. A skill is great when there’s a recognisable workflow. AGENTS.md is better for baseline behaviour: review tone, verbosity, repo conventions, preferred commands, etc. MCP or a “second brain” setup is better when the agent needs to retrieve external context rather than carry it in the prompt.

So I think the practical answer is not “one memory layer,” but using the right scope: global Codex instructions for how I work, repo AGENTS.md for how this codebase works, skills for repeatable workflows, and MCP/memory for recall. This gets pretty close to the precedence model people are asking for, without needing an umbrella project that mixes personal defaults with repo context.