Rework the Codex install flow around `codex plugin marketplace add
<clone>` so users can lean on the repo's bundled
`.agents/plugins/marketplace.json` instead of hand-authoring one.
This removes the "path must be under ~/" constraint that was tripping
people up.
Also:
- Call out that sideloading auto-registers `mem0` via .codex-mcp.json,
so Option A (Direct MCP) and Option B (sideload) must not be combined.
- Rename the Direct MCP snippet on the platform page from `mem0-mcp`
to `mem0` to match the bundled plugin — prevents silent duplicate
servers for users who follow one path then try the other.
- Drop the trailing slash in .codex-mcp.json's URL to match the rest
of the docs.
- Add `codex plugin marketplace upgrade` / `remove` and the plugin
cache path (~/.codex/plugins/cache/...).
- New troubleshooting entries for duplicate MCP registration and for
hooks breaking after a clone is moved (the installer bakes absolute
paths, so moving the clone requires re-running it).
gabrielstein-mem0