Add auto-deployment infrastructure for all 4 LXCs

- Per-LXC deploy scripts (lxc151-hookshot, lxc106-cinny, lxc139-landing, lxc110-draupnir)
- Per-LXC webhook hook configs with unique HMAC-SHA256 secrets
- Livekit graceful restart script + systemd timer (waits for zero active calls)
- Fix hookshot/deploy.sh capitalization bug (Uptime-Kuma, Tinker-Tickets, etc.)

Each LXC independently clones repo and runs its own deploy.sh via adnanh/webhook on port 9000.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

deploy/lxc139-landing.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+# Auto-deploy script for LXC 139 (nginx proxy manager)
+# Handles: landing/index.html
+# Triggered by: Gitea webhook on push to main
+set -euo pipefail
+
+REPO_DIR="/opt/matrix-config"
+LOG="/var/log/matrix-deploy.log"
+CLONE_URL="https://code.lotusguild.org/LotusGuild/matrix.git"
+
+exec >> "$LOG" 2>&1
+echo "=== $(date) === LXC139 deploy triggered ==="
+
+# Clone or pull
+if [ ! -d "$REPO_DIR/.git" ]; then
+    git clone "$CLONE_URL" "$REPO_DIR"
+    CHANGED="landing/index.html"
+else
+    cd "$REPO_DIR"
+    git fetch --all
+    PREV=$(git rev-parse HEAD)
+    git reset --hard origin/main
+    NEW=$(git rev-parse HEAD)
+    CHANGED=$(git diff --name-only "$PREV" "$NEW")
+    echo "Changed files: $CHANGED"
+fi
+
+if echo "$CHANGED" | grep -q '^landing/index.html'; then
+    echo "Deploying landing page..."
+    mkdir -p /var/www/matrix-landing
+    cp "$REPO_DIR/landing/index.html" /var/www/matrix-landing/index.html
+    nginx -s reload
+    echo "✓ landing page deployed and nginx reloaded"
+fi
+
+echo "=== $(date) === LXC139 deploy complete ==="