feat: turn search_trips into the website's travel search

config/services.yaml

@@ -26,6 +26,17 @@ parameters:
         LENA20: '2027-03-04'
         BOTSCHAFTER2627: '2027-04-30'
 
+    # Named travel periods of the website search ("Reisezeitraum"), offered by the chatbot's
+    # search_trips. Duplicated from the TYPO3 search configuration on purpose: update both each
+    # season. Periods may overlap; one whose end has passed is no longer offered.
+    chatbot_travel_periods:
+        - { label: 'Vorsaison', from: '2026-11-01', to: '2026-12-20' }
+        - { label: 'um Weihnachten', from: '2026-12-20', to: '2026-12-28' }
+        - { label: 'Silvester', from: '2026-12-26', to: '2027-01-03' }
+        - { label: '1 Januarwoche', from: '2027-01-02', to: '2027-01-09' }
+        - { label: 'Nachsaison', from: '2027-03-20', to: '2027-05-01' }
+        - { label: 'Ostern', from: '2027-03-20', to: '2027-04-03' }
+
     # MailJet list ids and their labels
     mailjet_lists:
         10321569: 'E&P Newsletter'
@@ -338,6 +349,10 @@ services:
         $baseUrl: '%env(APP_CMS_API_BASE_URL)%'
         $apiKey: '%env(APP_CMS_API_KEY)%'
 
+    App\Chatbot\TravelPeriods:
+      arguments:
+        $periods: '%chatbot_travel_periods%'
+
     App\Security\McpAccessTokenHandler:
       arguments:
         $tokens: '%env(APP_MCP_TOKENS)%'