Claude Code v2.1.97 & v2.1.98: Focus View Toggle, Vertex AI Wizard, Monitor Tool, O(n) SSE Fix

Releasebot·medium signal

Two releases on April 9 add Focus View toggle (Ctrl+O) in NO_FLICKER mode showing prompt and one-line tool summaries, an interactive Google Vertex AI setup wizard, a Monitor tool for streaming background script events, Cedar policy syntax highlighting, and subprocess sandboxing with PID namespace isolation on Linux. The SSE transport was fixed from O(n²) to O(n) linear time, meaning long-running agent sessions stay responsive instead of degrading.