1.7.0

[1.7.0] - 2026-07-03

Changed

• Faster rendering:
  SGR escape sequences are now formatted in place instead of allocating
  strings per cell, and scrolling / line insert / line delete only redraw the
  rows that actually changed instead of the whole screen.

• Lighter command history I/O:
  adding a command now appends a single line to the history file instead of
  rewriting all entries; the file is compacted automatically once it grows
  past twice the entry limit.

• Lower idle CPU usage:
  the event loop relaxes its polling interval from 10ms to 50ms after about
  half a second of inactivity. Key input still wakes the loop immediately.

Fixed

• Escape-sequence injection via window titles:
  OSC 0/1/2 titles are sanitized (control characters stripped, length capped)
  before being stored, so a program running in a pane can no longer inject
  escape sequences into pane border rendering.

• Unbounded memory growth from unterminated OSC strings:
  OSC string bodies are now capped at 4KB while waiting for a terminator.

• Hostile escape sequences could stall or crash the parser:
  oversized CSI parameters (e.g. ESC[65535S) are clamped to the screen
  height, and row access in insert/delete/erase character handlers no longer
  panics if the cursor invariant is ever violated.

• Win32 handle leaks on PTY spawn failure:
  pipe handles, the pseudo console, and the process attribute list are now
  released via RAII guards when CreatePseudoConsole or CreateProcessW
  fails.

• Tab bar rendering could panic:
  tab ids missing from the tab map are skipped instead of panicking.