feat: teamer season disposition count in info modal

addresses #869dv94n4

config/services.yaml

@@ -61,6 +61,13 @@ parameters:
         - '04-01'
         - '10-01'
 
+    # The season window as MM-DD. It wraps the turn of the year and is named after the
+    # calendar year it starts in ("Saison 2024/25"). The teamer info modal buckets a
+    # teamer's dispositions by the season their assignment starts in; one whose
+    # assignment starts outside this window is counted as "außerhalb der Saison".
+    season_start: '11-01'
+    season_end: '04-01'
+
     # Houses, hotel code: name. The name is used both as a label and to match
     # destination.hotel, the code to match destination.hotelCode.
     houses:
@@ -104,6 +111,8 @@ services:
             # App\Config\EmailTextCatalog, since its contents matter on few requests.
             $emailTextsFile: '%kernel.project_dir%/config/email_texts.yaml'
             $mailingBusTransport: '%mailing_bus_transport%'
+            $seasonStart: '%season_start%'
+            $seasonEnd: '%season_end%'
 
     # Tagged by interface rather than listed by hand: order between collectors is
     # irrelevant, so the only thing an explicit list could add here is the chance to