migrate deploy.sh to mise file task

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

.mise/tasks/deploy

@@ -1,8 +1,7 @@
 #!/usr/bin/env bash
+#MISE description="Build and deploy frontend + backend to Uberspace"
 set -euo pipefail
 
-eval "$(mise activate bash)"
-
 UBERSPACE_HOST="${UBERSPACE_HOST:-serve}"
 REMOTE_HTML_DIR="~/www/html/whattoplay"
 REMOTE_SERVICE_DIR="~/services/whattoplay"

CLAUDE.md

@@ -29,7 +29,7 @@ bun run dev:all        # both
 ## Deployment
 
 ```bash
-./deploy.sh
+mise run deploy
 ```
 
 Deploys to Uberspace (`serve.uber.space`):