feat(geoportal): N8N webhook on sync completion + tile cache monitoring

- weekend-deep-sync.ts: fire webhook to N8N_WEBHOOK_URL after each sync cycle
  (N8N triggers tippecanoe PMTiles rebuild via SSH on host)
- nginx tile-cache: add stub_status at /status, custom log format with cache status
- Add tile-cache-stats.sh: shows HIT/MISS ratio, cache size, slow tiles
- docker-compose: add N8N_WEBHOOK_URL env var

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -70,6 +70,8 @@ services:
       - NOTIFICATION_CRON_SECRET=1547a198feca43af6c05622588c6d3b820bad5163b8c20175b2b5bbf8fc1a987
       # Weekend Deep Sync email reports (comma-separated for multiple recipients)
       - WEEKEND_SYNC_EMAIL=${WEEKEND_SYNC_EMAIL:-}
+      # N8N webhook — triggers PMTiles rebuild after sync cycle
+      - N8N_WEBHOOK_URL=${N8N_WEBHOOK_URL:-}
       # Portal-only users (comma-separated, redirected to /portal)
       - PORTAL_ONLY_USERS=dtiurbe,d.tiurbe
       # Address Book API (inter-service auth for external tools)

nginx/tile-cache.conf

@@ -8,7 +8,13 @@ proxy_cache_path /var/cache/nginx/tiles
   inactive=7d
   use_temp_path=off;
 
+# Log format with cache status for monitoring (docker logs tile-cache | grep HIT/MISS)
+log_format tiles '$remote_addr [$time_local] "$request" $status '
+                 'cache=$upstream_cache_status size=$body_bytes_sent '
+                 'time=$request_time';
+
 server {
+  access_log /var/log/nginx/access.log tiles;
   listen 80;
   server_name _;
 
@@ -19,6 +25,12 @@ server {
     add_header Content-Type text/plain;
   }
 
+  # nginx status (active connections, request counts) — for monitoring
+  location = /status {
+    access_log off;
+    stub_status on;
+  }
+
   # Martin catalog endpoint (no cache)
   location = /catalog {
     proxy_pass http://martin:3000/catalog;

scripts/tile-cache-stats.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+# tile-cache-stats.sh — Show tile cache hit/miss statistics
+# Usage: ./scripts/tile-cache-stats.sh [MINUTES]
+# Reads recent nginx logs from tile-cache container.
+
+set -euo pipefail
+
+MINUTES="${1:-60}"
+
+echo "=== Tile Cache Stats (last ${MINUTES}min) ==="
+echo ""
+
+# Get nginx status (active connections)
+echo "--- Connections ---"
+curl -s "http://10.10.10.166:3010/status" 2>/dev/null || echo "(status endpoint unavailable)"
+echo ""
+
+# Parse recent logs for cache hit/miss ratio
+echo "--- Cache Performance ---"
+docker logs tile-cache --since "${MINUTES}m" 2>/dev/null | \
+  grep -oP 'cache=\K\w+' | sort | uniq -c | sort -rn || echo "(no logs in timeframe)"
+
+echo ""
+echo "--- Cache Size ---"
+docker exec tile-cache du -sh /var/cache/nginx/tiles/ 2>/dev/null || echo "(cannot read cache dir)"
+
+echo ""
+echo "--- Slowest Tiles (>1s) ---"
+docker logs tile-cache --since "${MINUTES}m" 2>/dev/null | \
+  grep -oP 'time=\K[0-9.]+' | awk '$1 > 1.0 {print $1"s"}' | sort -rn | head -5 || echo "(none)"

src/modules/parcel-sync/services/weekend-deep-sync.ts

@@ -401,6 +401,8 @@ export async function runWeekendDeepSync(): Promise<void> {
     console.log(
       `[weekend-sync] Ciclu complet #${state.completedCycles}! Reset pentru urmatorul ciclu.`,
     );
+    // Notify N8N to rebuild PMTiles (overview tiles for geoportal)
+    await fireSyncWebhook(state.completedCycles);
   }
 
   await saveState(state);
@@ -534,3 +536,28 @@ async function sendStatusEmail(
     console.warn(`[weekend-sync] Nu s-a putut trimite email: ${msg}`);
   }
 }
+
+/* ------------------------------------------------------------------ */
+/*  N8N Webhook — trigger PMTiles rebuild after sync cycle             */
+/* ------------------------------------------------------------------ */
+
+async function fireSyncWebhook(cycle: number): Promise<void> {
+  const url = process.env.N8N_WEBHOOK_URL;
+  if (!url) return;
+
+  try {
+    await fetch(url, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({
+        event: "weekend-sync-cycle-complete",
+        cycle,
+        timestamp: new Date().toISOString(),
+      }),
+    });
+    console.log(`[weekend-sync] Webhook trimis la N8N (ciclu #${cycle})`);
+  } catch (err) {
+    const msg = err instanceof Error ? err.message : String(err);
+    console.warn(`[weekend-sync] Webhook N8N esuat: ${msg}`);
+  }
+}