Tool ordering was defined redundantly in three separate places (ALL_TOOLS, OTHER_TOOLS in pyproject_toml.py, ALL_TOOL_COMMANDS in tool.py), allowing them to drift. ALL_TOOL_COMMANDS already had a bug: pyproject.toml appeared before pyproject-fmt, contradicting alphabetical order in ALL_TOOLS.

Changes

• _tool/impl/spec/all_.py (new) – introduces ALL_TOOL_SPECS, a canonical list of all ToolSpec instances in alphabetical order, mirroring ALL_TOOLS but at the spec layer. This avoids a circular import: _tool.impl.base can import from _tool.impl.spec, but not from _tool.all_.

• pyproject_toml.py – replaces the duplicated _OTHER_TOOLS list with a direct use of ALL_TOOL_SPECS from the new spec registry, filtering out PyprojectTOMLToolSpec inline and using is_likely_used(tool_spec) in place of tool.is_used(). All sibling base-Tool imports are removed.

• .importlinter – adds all_ as the top layer in the tool_impl_spec contract to accommodate the new module.

• tool.py – replaces the hardcoded ALL_TOOL_COMMANDS with a derived computation:

  def _get_all_tool_commands() -> list[str]:
      from usethis._tool.all_ import ALL_TOOLS
      return [tool.name.lower().replace(" ", "-") for tool in ALL_TOOLS]
  
  ALL_TOOL_COMMANDS: list[str] = _get_all_tool_commands()

  This fixes the pyproject.toml/pyproject-fmt ordering bug as a side effect.

• all_.py – OTHER_TOOLS is removed entirely. It had no remaining consumers in source code after the ALL_TOOL_SPECS refactor, and its only test was a circular self-validating assertion.

• Tests – test_tool_matches_command upgraded from set equality to list equality (enforces order); TestAllToolSpecs.test_in_sync_with_all_tools guards that ALL_TOOL_SPECS stays in sync with ALL_TOOLS.