36 Days of Claude Code Logs: Silent Model Switching, 11.5x Efficiency Gap

Originally published at recca0120.github.io [The first post]({{< ref "/post/claude-code-cache-ttl-audit" >}}) scanned 95 days of logs and found sub-agent cache TTL silently dropped to 5m. [The second]({{< ref "/post/claude-code-cache-ttl-17-days" >}}...