feat(romhacks): add Discord rom-hack ingestion stack (DCE -> JDownloader -> RomM)

Inert by default: empty token keeps the orchestrator idle and DRY_RUN=true
suppresses downloads. Orchestrator exports per-generation forum threads via
DiscordChatExporter, extracts download links + art, stages metadata, and writes
JDownloader crawljobs. Armed here with an alt account token and all 11 romhack
forums, still in DRY_RUN pending first-cycle validation.

stacks/romhacks/orchestrator/run.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# Harvest loop. Stays idle (no export, no enqueue) until the alt-account token and
+# guild id are configured, so deploying the stack unconfigured is harmless.
+set -u
+
+POLL_INTERVAL="${POLL_INTERVAL:-21600}"
+
+while true; do
+  if [ -z "${DISCORD_TOKEN:-}" ] || [ -z "${GUILD_ID:-}" ]; then
+    echo "[romhacks] DISCORD_TOKEN/GUILD_ID not set — idle. Sleeping ${POLL_INTERVAL}s."
+  else
+    python3 /app/orchestrate.py || echo "[romhacks] cycle failed (exit $?)"
+  fi
+  sleep "${POLL_INTERVAL}"
+done