Summary

VS Code 1.109 rolled out kitty keyboard protocol support in the integrated terminal viaterminal.integrated.enableKittyKeyboardProtocol. Once enabled, the program running in the terminal needs to request and understand the protocol itself._pyrepl currently does not, which breaks the Unix/macOS Python REPL when keys start arriving as kitty keyboard sequences instead of legacy terminal input.

This PR fixes that by teaching Unix_pyrepl to participate in the protocol and translate kitty key reports back into the existing_pyrepl event model.

• enable kitty keyboard protocol when Unix_pyrepl prepares the terminal and restore the previous keyboard mode on exit
• parse kittyCSI u,CSI ~, andCSI 1;... key reports inunix_eventqueue and translate them into existing_pyrepl key events
• add regression tests for kitty key parsing and update REPL output sanitizing for the new terminal control sequences

Tests

• ./python.exe -m test -j1 test_pyrepl.test_eventqueue test_pyrepl.test_unix_console
• ./python.exe -m test -j1 test_pyrepl.test_pyrepl