codex-cli 0.144.1 marks the web_search_cached feature deprecated
(codex features list) and prints, on every invocation that still
passes it:
deprecated: `[features].web_search_cached` is deprecated because
web search is enabled by default. Set `web_search` to "live",
"indexed", "cached", or "disabled" ... in config.toml if you want
to override it.
Live-tested: `codex exec` with no search-related flag at all still
performs real web searches successfully, so the old flag was inert
(just a noisy warning), not the thing keeping search on. This PR
replaces it with `--search` instead of dropping it outright, to pin
live web search explicitly rather than lean on codex's implicit
default — codex-cli has already changed this exact mechanism once
(the old features-flag system to the new web_search config key), so
an explicit flag is more robust to it changing again. Also corrects
the "Web search" doc note in codex/SKILL.md(.tmpl), which described
the old flag as "OpenAI's cached index" — inaccurate for --search's
live lookup via the native Responses web_search tool.