fix(codex): install context7 as a plugin

codex/config.toml

@@ -20,7 +20,10 @@ XDG_STATE_HOME = "/tmp/codex/state"
 XDG_CACHE_HOME = "/tmp/codex/cache"
 XDG_RUNTIME_DIR = "/tmp/codex/runtime"
 
-[mcp_servers.context7]
-command = "npx"
-args = ["-y", "@upstash/context7-mcp", "--api-key", "YOUR_API_KEY"]
-startup_timeout_sec = 20
+[marketplaces.context7-marketplace]
+last_updated = "2026-06-17T13:09:09Z"
+source_type = "git"
+source = "https://github.com/upstash/context7.git"
+
+[plugins."context7@context7-marketplace"]
+enabled = true