feat: Update local agent documentation to reflect changes in user_id and session_id handling; add marketing strategy document; update skills-lock.json with new Remotion best practices; update website subproject commit.

.claude/skills/remotion-best-practices/rules/tailwind.md

@@ -0,0 +1,11 @@
+---
+name: tailwind
+description: Using TailwindCSS in Remotion.
+metadata:
+---
+
+You can and should use TailwindCSS in Remotion, if TailwindCSS is installed in the project.
+
+Don't use `transition-*` or `animate-*` classes - always animate using the `useCurrentFrame()` hook.
+
+Tailwind must be installed and enabled first in a Remotion project - fetch https://www.remotion.dev/docs/tailwind using WebFetch for instructions.