ci: pre-warm dictionary cache + give /api/dictionary 6h TTL

Adds a workflow step that fetches the four dictionary endpoints
(world_regions, countries, cities, airports — see api.ts) before
playwright runs. With the longer 6h TTL on /api/dictionary, every
e2e spec hits cache for the same 4 URLs that drive most of the
data-driven tests (breadcrumb city names, etc).

2s sleeps between warm-up calls keep the cold-cache pass under the
WAF rate-limit window.

.gitea/workflows/ci-deploy.yml

@@ -110,6 +110,29 @@ jobs:
           curl -k -sSI -u "$BASIC_AUTH_USER:$BASIC_AUTH_PASS" \
             https://ui-dashboard.gnerim.ru/api/dictionary/1/world_regions | grep -iE "^HTTP|x-cache|x-envoy"
 
+      - name: Pre-warm /api cache (dictionaries shared across e2e specs)
+        id: cache_warmup
+        env:
+          BASIC_AUTH_USER: ${{ secrets.BASIC_AUTH_USER }}
+          BASIC_AUTH_PASS: ${{ secrets.BASIC_AUTH_PASS }}
+        run: |
+          # The four dictionary endpoints (see src/shared/dictionaries/api.ts)
+          # are read by every page load — fetch them once before e2e to warm
+          # nginx's proxy_cache. Subsequent e2e fetches hit the cache instead
+          # of the upstream WAF, which has a low per-source-IP rate limit.
+          # Brief sleep between requests to avoid tripping the WAF on the
+          # cold-cache pass.
+          for path in world_regions countries cities airports; do
+            url="https://ui-dashboard.gnerim.ru/api/dictionary/1/${path}"
+            rc=$(curl -k -sS -u "$BASIC_AUTH_USER:$BASIC_AUTH_PASS" -o /dev/null -w "%{http_code}" "$url")
+            echo "warm $path -> HTTP $rc"
+            sleep 2
+          done
+          echo "--- verify cache HIT on a re-fetch ---"
+          curl -k -sSI -u "$BASIC_AUTH_USER:$BASIC_AUTH_PASS" \
+            https://ui-dashboard.gnerim.ru/api/dictionary/1/cities \
+            | grep -iE "^HTTP|x-cache-status"
+
       - name: Install Playwright browsers
         id: playwright_install
         run: pnpm exec playwright install --with-deps chromium

deployment/nginx/ui-dashboard.gnerim.ru.conf

@@ -43,6 +43,27 @@ server {
     #
     # Cached to absorb e2e bursts that would otherwise trip the upstream
     # WAF rate limit. Only GET/HEAD are cached (default proxy_cache_methods).
+    #
+    # Dictionary endpoints (cities, airports, countries, world_regions) are
+    # essentially static — pre-warmed by CI and held for 6h. Other /api/*
+    # paths are dynamic queries; 1m is a reasonable freshness budget.
+    location /api/dictionary/ {
+        auth_basic off;
+        proxy_pass         https://127.0.0.1:8443;
+        proxy_set_header   Host flights.test.aeroflot.ru;
+        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_ssl_server_name on;
+        proxy_ssl_name        flights.test.aeroflot.ru;
+
+        proxy_cache            flights_api;
+        proxy_cache_key        "$scheme$host$request_uri";
+        proxy_cache_valid      200 6h;
+        proxy_cache_valid      404 5m;
+        proxy_cache_lock       on;
+        proxy_cache_use_stale  error timeout updating http_403 http_500 http_502 http_503 http_504;
+        add_header             X-Cache-Status $upstream_cache_status always;
+    }
+
     location /api/ {
         auth_basic off;
         proxy_pass         https://127.0.0.1:8443;