* main: (149 commits)
  Preserve required parentheses in lambda bodies (#22747)
  [`flake8-simplify`] Make fix unsafe if it deletes comments (`SIM911`) (#22661)
  [`refurb`] Make fix unsafe if it deletes comments (`FURB145`) (#22670)
  [`ruff`] Make fix unsafe if it deletes comments (`RUF020`) (#22664)
  [ty] Add README for `ty_completion_bench` CLI tool
  [ty] Update completion eval
  [ty] Collect completions into a max-heap
  [ty] Truncate imports and qualifications derived from completions
  [ty] Get rid of high-level completion deduplication
  [ty] Refactor how we sort completions
  [ty] Optimize collection of "all symbols"
  [ty] Speed up completions by tweaking sorts
  [ty] Add new `ty_completion_bench` for ad hoc benchmarking
  gitignore: ignore scratch directories in completion eval truth directory
  [`pyupgrade`] Allow shadowing non-builtin bindings (`UP029`) (#22749)
  [ty] Emit invalid type form for stringified annotations (#22752)
  [ty] Allow `if type(x) is Y` narrowing for types other than class-literal types (#22729)
  [ty] Add basic support for overloads in `ParamSpec` (#21946)
  [`ruff`] Make fix unsafe if it deletes comments (`RUF019`) (#22663)
  [`flake8-bugbear`] Make fix unsafe if it deletes comments (`B014`) (#22659)
  ...