Inside Claude Code — before the changelog.

• Claude Code Teams and Swarms: A Conceptual Architecture
  February 7, 2026 · multi-agent, coordination, architecture, coding-agents, claude-code
• Inside Claude Code's Compaction System
  January 21, 2026 · compaction, context-management, context-window
• UltraThink is Dead. Long Live Extended Thinking.
  January 17, 2026 · extended-thinking, ultrathink, performance
• Session Memory
  December 16, 2025 · unreleased, memory, context