KingMode prompt enforces coding-model discipline

This is prompt engineering as guardrail design, not hype engineering. KingMode changes the model's defaults: fewer fake libraries, more deliberate planning, and a cleaner split between quick UI generation and deeper architecture work. The ULTRATHINK trigger is basically a manual effort dial for reasoning depth. Because it lives at the system-prompt layer, it is portable across IDEs and agent runtimes that accept prompt injection. The tradeoff is token burn and occasional over-minimal output, so humans still need to steer taste and final decisions. As a public GitHub prompt, it is easy to fork, audit, and adapt for different model families.