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02abd9a8ea
### What changed 1. Removed per-turn MCP selection reset in `core/src/tasks/mod.rs`. 2. Added `SessionState::set_mcp_tool_selection(Vec<String>)` in `core/src/state/session.rs` for authoritative restore behavior (deduped, order-preserving, empty clears). 3. Added rollout parsing in `core/src/codex.rs` to recover `active_selected_tools` from prior `search_tool_bm25` outputs: - tracks matching `call_id`s - parses function output text JSON - extracts `active_selected_tools` - latest valid payload wins - malformed/non-matching payloads are ignored 4. Applied restore logic to resumed and forked startup paths in `core/src/codex.rs`. 5. Updated instruction text to session/thread scope in `core/templates/search_tool/tool_description.md`. 6. Expanded tests in `core/tests/suite/search_tool.rs`, plus unit coverage in: - `core/src/codex.rs` - `core/src/state/session.rs` ### Behavior after change 1. Search activates matched tools. 2. Additional searches union into active selection. 3. Selection survives new turns in the same thread. 4. Resume/fork restores selection from rollout history. 5. Separate threads do not inherit selection unless forked.