fix(tui): recover after terminal input replacement

[m1ngsama]

Summary

• advance the pinned crossterm fork to signed commit e3888223b5064543484cc08c3966cc05d711003a
• give Unix terminal event readers owned terminal identities and atomic source generations, including generation-aware EventStream wake/result handling
• prove two public tut::run calls in one process recover from terminal A EOF after fd 0 is rebound to terminal B
• preserve independent termios restoration, screen cleanup, signal-session ownership, event bounds, and package pin provenance

Closes #80

Validation

• independent crossterm fork review across mio and use-dev-tty backends
• public A/EOF/B real-PTY integration test
• current and Rust 1.88 strict Clippy/full tests
• release tests with overflow checks
• Rust 1.88 Linux cross-check
• make bounded-results 16-record contract
• package verification and full distcheck