docs: add LLM development disclosure to README

Humans own design, architecture, code review, testing, and
verification. LLMs are part of our development workflow.
Links to circuitforge.tech/positions for our full position.

README.md

@@ -172,4 +172,6 @@ Avocet is developed and maintained on Forgejo at [git.opensourcesolarpunk.com/Ci
 
 Free for personal non-commercial self-hosting. Commercial use or SaaS re-hosting requires a paid license. Converts to MIT after 4 years.
 
+Humans own design, architecture, code review, testing, and verification. LLMs are part of our development workflow. [Our positions on LLM use →](https://circuitforge.tech/positions)
+
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