web_search_request still triggers deprecated tools.web_search notice on 0.66.0-alpha.7

Bug: web_search_request still triggers deprecation notice on latest alpha

Environment

• macOS (local dev machine)
• codex-cli 0.66.0-alpha.7 installed via npm install -g @openai/codex@alpha
• ~/.codex/config.toml contains:
• [features] web_search_request = true
• [tools] web_search_request = true
• (no web_search entries)
• codex features list shows web_search_request = true (stable)

Steps to Reproduce

1. npm install -g @openai/codex@alpha
2. codex -V → codex-cli 0.66.0-alpha.7
3. codex exec --color never "Say hi"

Expected

• No deprecation message, since web_search_request is enabled and the legacy tools.web_search tool should be suppressed.

Actual

• CLI prints:

``
deprecated: tools.web_search is deprecated. Use web_search_request instead.
Enable it with --enable web_search_request or [features].web_search_request in config.toml.
``

• Then the turn proceeds normally.

Notes

• Repro occurs even with --disable warnings.
• The warning also appears on codex exec runs that do not request search (e.g., simple “Say hi” prompt).
• Appears to be an upstream toolset wiring issue: the session still receives tools.web_search despite the flag.