fix(myorg-assistant): point cronjobs at registry image + add imagePullSecrets

CronJob pods were stuck in ImagePullBackOff because they referenced
the local-only image 'myorg-assistant:latest' which is not present
on the node. Switch all 5 cronjobs to the Gitea registry image
git.rogi.casa/roger/myorg-assistant/myorg-assistant:fcf79bf
(matching the Deployment), set imagePullPolicy: Always, and add
imagePullSecrets: gitea-registry so they can authenticate to the
private registry.

myorg-assistant/cronjobs/deadline-checker.yaml

@@ -53,11 +53,6 @@ spec:
                 secretKeyRef:
                   name: myorg-assistant-secret
                   key: LITELLM_API_KEY
-            - name: WEB_SECRET_KEY
-              valueFrom:
-                secretKeyRef:
-                  name: myorg-assistant-secret
-                  key: WEB_SECRET_KEY
             volumeMounts:
             - name: myorg-data
               mountPath: /data/myorg

myorg-assistant/cronjobs/evening-summary.yaml

@@ -53,11 +53,6 @@ spec:
                 secretKeyRef:
                   name: myorg-assistant-secret
                   key: LITELLM_API_KEY
-            - name: WEB_SECRET_KEY
-              valueFrom:
-                secretKeyRef:
-                  name: myorg-assistant-secret
-                  key: WEB_SECRET_KEY
             volumeMounts:
             - name: myorg-data
               mountPath: /data/myorg

myorg-assistant/cronjobs/git-sync.yaml

@@ -68,11 +68,6 @@ spec:
                 secretKeyRef:
                   name: myorg-assistant-secret
                   key: LITELLM_API_KEY
-            - name: WEB_SECRET_KEY
-              valueFrom:
-                secretKeyRef:
-                  name: myorg-assistant-secret
-                  key: WEB_SECRET_KEY
             volumeMounts:
             - name: myorg-data
               mountPath: /data/myorg

myorg-assistant/cronjobs/morning-briefing.yaml

@@ -60,11 +60,6 @@ spec:
                 secretKeyRef:
                   name: myorg-assistant-secret
                   key: LITELLM_API_KEY
-            - name: WEB_SECRET_KEY
-              valueFrom:
-                secretKeyRef:
-                  name: myorg-assistant-secret
-                  key: WEB_SECRET_KEY
             volumeMounts:
             - name: myorg-data
               mountPath: /data/myorg

myorg-assistant/cronjobs/waiting-followup.yaml

@@ -53,11 +53,6 @@ spec:
                 secretKeyRef:
                   name: myorg-assistant-secret
                   key: LITELLM_API_KEY
-            - name: WEB_SECRET_KEY
-              valueFrom:
-                secretKeyRef:
-                  name: myorg-assistant-secret
-                  key: WEB_SECRET_KEY
             volumeMounts:
             - name: myorg-data
               mountPath: /data/myorg