Flicker-Free External Editor Integration

What: External text editors (vim, nano, code, etc.) no longer cause terminal UI flickering

How it works: When you use an external editor to write messages or edit text, Claude Code now pauses all terminal rendering before launching the editor and resumes it cleanly afterward. The Zed editor receives special treatment—it doesn't clear the screen, preserving your terminal context.

Details:

• Ink rendering instance pauses during editor sessions via new pause() and resume() methods
• Alternate screen buffer management moved to finally block for reliable cleanup
• Conditional screen clearing: all editors except Zed use alternate screen buffer
• Evidence: Modified function ftA() at line 431400 (was et1() at line 431181 in v2.0.25), added pause() and resume() methods to Ink class BOA at line 71631