v0.18.2-fork.1 Upstream incorporations

Copied notes:

Cybermode 2026
==============

This is a small release with a big punch: Crush (and really, Bubble Tea v2) now
supports Mode 2026, which synchronizes the renderer with the rendering cycles
in the terminal, resulting in even smoother rendering overall.

Other small niceties in this release:

- Assisted-by is now the default
- Small rendering edge cases have been fixed
- @novalis78 fixed a bug with tool discovery

Enjoy the release! We have lots more in the pipe. 💘

Fixed

- cd3bd53: fix(mcp): always call ListTools to discover available tools (#1447)
  (@novalis78)

Other stuff

- 9d70d1d: chore(attribution): default to assisted-by + email (#1444)
  (@Amolith)
- a2e2e64: chore(setup): model chooser language copyedit (@meowgorithm)
- ce5ffb0: chore: bump bubbletea and ultraviolet to reduce resize tearing
  (#1460) (@aymanbagabas)
- 3dd157c: chore: bump bubbletea and ultraviolet to support mode 2026
  (@aymanbagabas)
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