Bug fixes shipping to Grok Build 0.2.20 (release notes will be available in the TUI and on change-log website)

• Eliminate ghost-cell artifacts in markdown table rendering • Make monitors visible and killable to the model • Preserve soft breaks in plan preview • Add image_to_video and reference_to_video tools • Add bundled imagine skill • Convert ICO images to PNG • Resolve [Image # N] attachment references in image_edit • Open fullscreen viewer on Enter for Search and ListDir blocks • Route MCP lifecycle notifications by sessionId + bound per-server init • Route mouse-wheel scroll to /btw overlay panel • Compaction: neutralize echoed summarization instruction in summary seed • Structured compaction prompt (successor-assistant, carry-forward, <analysis> block) • Dedupe between-turn subagent completion reminders • Allow auto-update to downgrade on rollback • Dedupe MCP servers declared in both .mcp.json and plugin.json • Fix local stdio MCP servers on Windows