#5091 "Local assets". base.html, the dashboard and the share view loaded htmx and Chart.js from unpkg/jsdelivr, Gridstack from jsdelivr and their fonts from Google. On an instance with no outbound network (rule 164) every page lost htmx, and so every button and poll; and each page load told those hosts about the visitor (rule 155). - steward/static/vendor: htmx 2.0.4, Chart.js 4.4.4, Gridstack 12.6.0 (the versions the pages already used), with their licences (0BSD, MIT, MIT). - steward/static/fonts: Inter, Fraunces and JetBrains Mono, the design system's faces (SIL OFL, licences beside them), every unicode-range subset, with fonts.css. The serif face is now Fraunces in place of EB Garamond (base) and Libertinus Serif (share view); applying Inter and the type scale is the tokens step. - Templates use url_for('static'); /static already passes every gate. - Guard (tests/test_no_remote_assets.py): no template or stylesheet loads a script, stylesheet, font or image from another origin (comments stripped, example URLs in help text allowed), with a self-test that it can fail; every url_for('static') file and every font the sheet names exists. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>