v1.2.20

• Replace rustyline with crossterm raw mode for immediate key handling
• Add DaemonMode enum with Unix socket + subprocess backends
• Implement [STREAM]/[THINK] protocol for unbuffered streaming from Python daemon
• Fix redraw_prompt with proper line-wrapping calculations
• Gate duplicate thinking display on last_streamed state
• Reduce agent max_iterations 50 to 12, strengthen stop prompt
• TUI jinxes run inline; Python steps use subprocess
• Add npcsh-daemon service files and README instructions