seerr: restore Jellyfin config from ConfigMap on pod start

Init container detects if Jellyfin apiKey is missing and restores
it from the seerr-defaults ConfigMap. Prevents config loss on pod
restarts or when the Jellyfin API key fails validation.

servers/legion/k8s/media/overseerr.yaml

@@ -1,6 +1,27 @@
-# Overseerr — family request portal (watch.nook.family)
-# NOTE: Overseerr is being superseded by Seerr — migrate when ready
-# Family members browse and request content here
+# Seerr — family request portal (watch.nook.family)
+# Init container ensures Jellyfin connection is always configured from git.
+# If settings.json has no Jellyfin apiKey (e.g. after reset), it is restored from the ConfigMap.
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: seerr-defaults
+  namespace: media
+data:
+  jellyfin.json: |
+    {
+      "name": "Jellyfin",
+      "ip": "jellyfin.media.svc.cluster.local",
+      "port": 8096,
+      "useSsl": false,
+      "urlBase": "",
+      "externalHostname": "https://jellyfin.nook.family",
+      "jellyfinForgotPasswordUrl": "",
+      "libraries": [],
+      "serverId": "87e202a4e9ad49d1bf73927f714fbce6",
+      "apiKey": "35e87cb67e3a4b908678ba9a257d2571"
+    }
+---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -20,6 +41,41 @@ spec:
       labels:
         app: overseerr
     spec:
+      initContainers:
+        # Restore Jellyfin connection config if it was cleared (e.g. after pod restart with bad key)
+        - name: restore-jellyfin-config
+          image: node:22-alpine
+          command:
+            - sh
+            - -c
+            - |
+              SETTINGS=/app/config/settings.json
+              DEFAULTS=/defaults/jellyfin.json
+
+              if [ ! -f "$SETTINGS" ]; then
+                echo "No settings.json — creating with Jellyfin defaults"
+                echo "{\"jellyfin\": $(cat $DEFAULTS)}" > $SETTINGS
+                exit 0
+              fi
+
+              KEY=$(node -e "try{const d=require('fs').readFileSync('$SETTINGS','utf8'); console.log(JSON.parse(d).jellyfin?.apiKey||'')}catch(e){console.log('')}")
+              if [ -z "$KEY" ]; then
+                echo "Jellyfin apiKey missing — restoring from defaults"
+                node -e "
+                  const fs=require('fs');
+                  const s=JSON.parse(fs.readFileSync('$SETTINGS','utf8'));
+                  s.jellyfin=JSON.parse(fs.readFileSync('$DEFAULTS','utf8'));
+                  fs.writeFileSync('$SETTINGS', JSON.stringify(s,null,2));
+                  console.log('Restored Jellyfin config');
+                "
+              else
+                echo "Jellyfin config present, skipping restore"
+              fi
+          volumeMounts:
+            - name: config
+              mountPath: /app/config
+            - name: seerr-defaults
+              mountPath: /defaults
       containers:
         - name: overseerr
           image: seerr/seerr:latest
@@ -54,6 +110,9 @@ spec:
         - name: config
           persistentVolumeClaim:
             claimName: overseerr-config
+        - name: seerr-defaults
+          configMap:
+            name: seerr-defaults
 ---
 apiVersion: v1
 kind: Service