docs: add banner illustration for README

docs: update README — mark article #5 as published, clean up formatting

feat: add article 05 - privacy fence & data security (series finale)

docs(article): add images for article #4 skill supply chain

refactor: rename skill directories to guomeiqing- prefix, update all references

feat: rename skills with guomeiqing- prefix, add article #4, add English translations

feat(safe-install): add safe-install skill for automated security review

docs: update README — article #3 now published

docs(article): add article #3 prompt injection

docs: rebalance README — skill-first with articles as a module

chore: release v1.1.0

docs: update series plan — pivot from config tutorials to AI-native security topics

refactor: restructure as security ecosystem repo

feat: add package.json for npm publish, update install docs

feat: initial security-hardening skill