divoom: add pi deploy artifact manifests

Add source-controlled Puppet/Hiera contracts for edge2 Divoom-as-DM-device without replacing the live flowercore-divoom systemd deployment.

Add Divoom TV Pi HDMI systemd/Puppet deployment artifacts, LF shell-script guardrails, and focused lint coverage for the additive non-K8s deploy shape.

Co-Authored-By: Codex <codex@openai.com>

apps/fc-divoom-tv-pi/scripts/flowercore-divoom-tv-launch.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+APP_BIN="${FC_DIVOOM_TV_BIN:-/opt/flowercore/divoom-tv/FlowerCore.Divoom.Tv}"
+STATE_DIR="${FC_DIVOOM_TV_STATE_DIR:-/var/lib/fc-divoom-tv}"
+LOG_DIR="${FC_DIVOOM_TV_LOG_DIR:-/var/log/fc-divoom-tv}"
+PRESENTATION_MODE="${FC_DIVOOM_TV_PRESENTATION_MODE:-PillarboxSquare}"
+START_SCENE="${FC_DIVOOM_TV_START_SCENE:-bluejay-clock}"
+REDUCED_MOTION="${FC_DIVOOM_TV_REDUCED_MOTION:-false}"
+
+COMMON_ARGS=(
+  "--target=hdmi"
+  "--presentation-mode=${PRESENTATION_MODE}"
+  "--startup-scene=${START_SCENE}"
+  "--reduced-motion=${REDUCED_MOTION}"
+  "--state-dir=${STATE_DIR}"
+  "--log-dir=${LOG_DIR}"
+)
+
+if command -v cage >/dev/null 2>&1; then
+  exec cage -- "${APP_BIN}" "${COMMON_ARGS[@]}" "$@"
+fi
+
+echo "[$(date -Is)] cage not found; launching FlowerCore.Divoom.Tv directly" >&2
+exec "${APP_BIN}" "${COMMON_ARGS[@]}" "$@"