Add kiosk launcher downloads and player URL resolution

scripts/pulse-signage-kiosk.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+target_url="${1:-http://localhost:8081}"
+
+find_browser() {
+  local candidate
+  for candidate in "$@"; do
+    if command -v "$candidate" >/dev/null 2>&1; then
+      printf '%s' "$candidate"
+      return 0
+    fi
+  done
+  return 1
+}
+
+browser=""
+browser_kind=""
+
+if browser="$(find_browser google-chrome-stable google-chrome chromium chromium-browser msedge microsoft-edge firefox)"; then
+  case "$browser" in
+    firefox)
+      browser_kind="firefox"
+      ;;
+    msedge|microsoft-edge)
+      browser_kind="edge"
+      ;;
+    *)
+      browser_kind="chrome"
+      ;;
+  esac
+else
+  echo "No supported browser was found."
+  echo "Tried Chrome, Chromium, Edge, and Firefox in PATH."
+  exit 1
+fi
+
+echo "Launching ${browser_kind} in kiosk mode: ${target_url}"
+
+case "$browser_kind" in
+  firefox)
+    exec "$browser" -kiosk "$target_url"
+    ;;
+  edge|chrome)
+    exec "$browser" --disable-notifications --kiosk "$target_url"
+    ;;
+esac