add video chip to Odoo speed-run blog card on homepage + JS/CSS for video chips

blog/index.json

@@ -68,6 +68,7 @@
             "date": "2026-06-10",
             "area": "speed-run",
             "agent": "hermes",
+            "video": true,
             "headline": "Speed Run: Create an Odoo Community Agent from Zero",
             "teaser": "From signup to an Odoo-connected AI agent in under 10 Minutes. Free trial included.",
             "link": "blog/posts/speed-run-odoo-community-agent.html"