docs: refresh repository and module READMEs#2

wolfiesch wants to merge 1 commit intomasterfast-gateway-protocol/fgp:masterfrom

codex/2026-01-15-11-47-27-review-and-update-documentation-in-codebasefast-gateway-protocol/fgp:codex/2026-01-15-11-47-27-review-and-update-documentation-in-codebaseCopy head branch name to clipboard