Add web-player Claude Code skills

Installed skills for the SvelteKit/Tailwind/Vite stack under
web-player/.agents/skills (source of truth) with web-player/.claude/skills
symlinked to it for tool compatibility, plus skills-lock.json tracking
each skill's registry source and content hash.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web-player/.agents/skills/vite/GENERATION.md

@@ -0,0 +1,5 @@
+# Generation Info
+
+- **Source:** `sources/vite`
+- **Git SHA:** `c47015eba4f0de255218c35769628d87152216ca`
+- **Generated:** 2026-01-31