chore(skills): add homepage metadata

skills/blucli/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: blucli
 description: BluOS CLI (blu) for discovery, playback, grouping, and volume.
+homepage: https://blucli.sh
 metadata: {"clawdis":{"emoji":"🫐","requires":{"bins":["blu"]},"install":[{"id":"go","kind":"go","module":"github.com/steipete/blucli/cmd/blu@latest","bins":["blu"],"label":"Install blucli (go)"}]}}
 ---