init: initial commit

- ticker / QR ad overlay / break slide graphics (1920×1080) with all
  geometry derived from one shared module (src/shared/obs-geometry.mjs)
- OBS scene-collection generator (scripts/generate-obs-scenes.mjs) and a
  read-only in-dashboard setup verifier, both driven by the same module
- en/sr dashboard i18n selected via bundle config; configschema.json with
  neutral first-run defaults seeded from optional branding config
- install.sh / systemd user service / update.sh for venue deployment
- reference OBS scene collection + profile from a real venue as fixtures

scripts/update.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# Update the bundle inside a NodeCG install created by install.sh:
+# pull, reinstall deps, rebuild, and restart the service if one is running.
+#
+# Usage: ./update.sh [install-dir]   (default: the install this script is in,
+#                                     falling back to ~/venue-gfx)
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BUNDLE=nodecg-venue-gfx
+UNIT_NAME=nodecg-venue-gfx.service
+
+# scripts/ lives at <install>/bundles/<bundle>/scripts — walk up.
+candidate="$(cd "$SCRIPT_DIR/../../.." && pwd)"
+install_dir="${1:-$candidate}"
+[[ -f $install_dir/index.js ]] || install_dir="$HOME/venue-gfx"
+[[ -f $install_dir/index.js ]] || {
+  echo "no NodeCG install found (tried $candidate and ~/venue-gfx)" >&2
+  exit 1
+}
+
+bundle_dir="$install_dir/bundles/$BUNDLE"
+
+echo "Updating $bundle_dir…"
+git -C "$bundle_dir" pull --ff-only
+(cd "$bundle_dir" && npm ci --no-audit --no-fund && npm run build)
+
+if systemctl --user is-active --quiet "$UNIT_NAME" 2>/dev/null; then
+  echo "Restarting $UNIT_NAME…"
+  systemctl --user restart "$UNIT_NAME"
+else
+  echo "Done. Restart NodeCG to load the new extension code."
+fi