---
fixes:
  - |
    Runtime tool-name selection via ``Agent.run(tools=["tool_a", "tool_b"])`` now resolves correctly when a
    ``SearchableToolset`` is configured. Previously the ``SearchableToolset`` was flattened into a single-item
    list (just its search tool), which broke its search and lazy-loading behavior.
  - |
    A ``Toolset`` is no longer mutated in place during an ``Agent`` run. Each run now operates on an isolated
    per-run copy of the configured ``Toolset`` (via the new ``Toolset.spawn()`` method). This makes concurrent
    runs that share the same ``Toolset`` instance safe: per-run state such as the active tool-name selection, and
    a ``SearchableToolset``'s discovered tools, can no longer leak or collide across runs.
enhancements:
  - |
    ``Toolset`` gained two methods: ``get_selectable_tools()`` returns every tool available for name-based
    selection (ignoring any active selection restriction, e.g. the one used by ``SearchableToolset``), and
    ``spawn()`` returns an isolated, run-scoped copy of the Toolset. Subclasses with additional run-scoped state
    can override ``spawn()``.
  - |
    ``SearchableToolset`` now exposes its full catalog of tools via ``SearchableToolset.get_selectable_tools()``.