chore(deploy): add simple build+rsync deploy script

Wraps the build-and-push routine (zola build → rsync to mycelium:~/public/praxis/)
with --dry-run and --no-build flags. Anchored to repo root via $(dirname).

scripts/deploy.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+# Build the Zola site and sync `public/` to the Variomedia staging host.
+#
+# Usage:
+#   scripts/deploy.sh           # build + deploy
+#   scripts/deploy.sh --dry-run # show what rsync would do, transfer nothing
+#   scripts/deploy.sh --no-build # skip `zola build` (deploy existing public/)
+
+set -euo pipefail
+
+REMOTE="mycelium:~/public/praxis/"
+LOCAL="public/"
+
+# Run from the repo root so relative paths are stable.
+cd "$(dirname "$0")/.."
+
+DRY_RUN=""
+DO_BUILD=1
+for arg in "$@"; do
+  case "$arg" in
+    --dry-run)  DRY_RUN="--dry-run" ;;
+    --no-build) DO_BUILD=0 ;;
+    -h|--help)
+      sed -n '2,8p' "$0"
+      exit 0 ;;
+    *)
+      echo "unknown flag: $arg" >&2
+      exit 2 ;;
+  esac
+done
+
+if [[ "$DO_BUILD" -eq 1 ]]; then
+  echo "==> zola build"
+  zola build
+fi
+
+if [[ ! -d "$LOCAL" ]]; then
+  echo "error: $LOCAL does not exist — run without --no-build first" >&2
+  exit 1
+fi
+
+echo "==> rsync $LOCAL -> $REMOTE${DRY_RUN:+  (dry-run)}"
+rsync -avz --delete $DRY_RUN "$LOCAL" "$REMOTE"
+
+echo "==> done"