fix(deploy): reload NPM after deploy so it re-resolves the app's IP

Root cause of a post-deploy outage: recreating the app container can assign it a NEW
docker network IP. Nginx Proxy Manager caches the app's upstream IP at config-load,
so it kept connecting to the OLD IP (which, after adding the postgres/redis services,
was reassigned to bizgaze-postgres) → 'Connection refused' → site down until nginx
re-resolved. deploy.sh now runs 'nginx -s reload' in the NPM container after verify
(normal + rollback), non-fatal if NPM isn't detected. This makes deploys self-healing
for the app-IP-change case.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

deploy.sh

@@ -84,6 +84,24 @@ verify() {
   fi
 }
 
+# Recreating the app container can give it a NEW docker network IP. Nginx Proxy Manager caches the app's
+# upstream IP at config-load, so it would keep hitting the OLD IP ("Connection refused" → site down) until
+# it re-resolves. Reload NPM's nginx so it picks up the current IP. Non-fatal: warn (don't fail) if NPM
+# isn't found — some environments run a different reverse proxy.
+reload_proxy() {
+  local npm
+  npm="$(docker ps --format '{{.Names}}' | grep -iE 'nginx.?proxy.?manager.*app' | head -n1 || true)"
+  if [ -n "$npm" ] && docker exec "$npm" nginx -t >/dev/null 2>&1; then
+    if docker exec "$npm" nginx -s reload >/dev/null 2>&1; then
+      ok "Reloaded $npm (re-resolved app upstream IP)."
+    else
+      warn "Could not reload $npm — if the site 502s, run: docker exec $npm nginx -s reload"
+    fi
+  else
+    warn "Reverse proxy (NPM) not auto-detected; if the site fails after deploy, reload it so it re-resolves the app IP."
+  fi
+}
+
 # --- rollback mode ---
 if [ "$ROLLBACK" -eq 1 ]; then
   latest="$(ls -1t "$BK_DIR"/*.tgz 2>/dev/null | head -n1 || true)"
@@ -91,7 +109,7 @@ if [ "$ROLLBACK" -eq 1 ]; then
   log "Rolling back from: $latest"
   snapshot                                   # snapshot the (broken) current state first
   tar -xzf "$latest" -C "$APP_DIR"
-  rebuild; verify
+  rebuild; verify; reload_proxy
   ok "Rolled back to $latest"
   exit 0
 fi
@@ -106,5 +124,6 @@ if [ "$DO_PULL" -eq 1 ]; then
 fi
 rebuild
 verify
+reload_proxy
 ok "Deploy complete. Backups kept: $KEEP_BACKUPS (in $BK_DIR)."
 echo "   Rollback with:  ./deploy.sh --rollback"