## Summary
- Allows selected MCP results to return a larger default result set.
- Keeps the existing default cap for other MCP results.
- Applies the cap consistently when higher explicit limits are
requested.
## Testing
- `cargo test -p codex-core tool_search`
- Ran a local CLI smoke test with two stdio MCP servers exposing 100
tools each; the selected-server query returned 20 tools and the
regular-server query returned 8.
