New skill (gh-cli-projects-tasks-conventions), new credibility-ingest routine, and three skill updates from real-world incidents

A premature-on-purpose new skill for gh project task creation — codifying just two conventions (compose with pseudomonorepos to find the right repo, link to context-v files via clickable GitHub URLs) so they don't drift while the rest emerge. Plus a company-anchored credibility-ingest routine that inverts the crawl-fetch-ingest cascade so a fundraising deck can render its backers legibly. Plus three updates born from real incidents: an Astro Knots prerender-vs-auth rule (calmstorm-decks shipped a silent production bypass before we caught it), an audience-cascade cross-reference in git-conventions, and a full rewrite of the content-rollup reference now that two production splashes have implemented it.