docs(bankr): W19 weekly skill update

[sidrisov]

Summary

• Wallet-level security settings: Added two-layer security model documentation (wallet-level + API-key level), including controls table, fail-closed pricing behavior, recipient cooldown, spend tracking, and incident response procedure
• Agent LLM credit top-up: Documented the agent's ability to top up LLM credits directly in conversation, including auto-swap from any Base ERC-20 token
• Updated prompt examples: Added LLM credit top-up prompt examples to the skill

Files changed

• bankr/SKILL.md — Added wallet security settings to Safety section, agent credit top-up to LLM Gateway section, new prompt examples
• bankr/references/safety.md — Expanded with wallet-level security controls, two-layer model, incident response, updated access control matrix
• bankr/references/llm-gateway.md — Added agent credit top-up subsection under Credits

---

Generated by Claude Code