fix: exclude .superpowers and .claude from biome lint scope

Generated HTML files in .superpowers/ caused a11y lint errors in CI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

biome.json

@@ -12,7 +12,9 @@
 			"!src/client/routeTree.gen.ts",
 			"!drizzle",
 			"!drizzle-pg",
-			"!.planning"
+			"!.planning",
+			"!.superpowers",
+			"!.claude"
 		]
 	},
 	"formatter": {