6-Layer agent system design canvas and 8+4 core patterns from the Claude Code source leak (512K lines TS). From the Circuit Breaker that stopped 250K/day wasted API calls with 3 lines, to 23-step bash AST security.
The March 31, 2026 npm sourcemap incident revealed Claude Code internals. 4-phase execution, 7 modes, and the 11-step Agent Loop analyzed.
6-Layer agent system design canvas and 8+4 core patterns from the Claude Code source leak (512K lines TS). From the Circuit Breaker that stopped 250K/day wasted API calls with 3 lines, to 23-step bash AST security.
The March 31, 2026 npm sourcemap incident revealed Claude Code internals. 4-phase execution, 7 modes, and the 11-step Agent Loop analyzed.