Mobile notifications for iOS (#210)

* mobile: wire notification registration and listener

* implement backend components for push notifications

* refactor: agentic comment cleanup

* docs: use proper module name for particle processor

* set required env variables for push notifications

* bump version

* fix: always upsert push token on mobile start

* Revert "fix: always upsert push token on mobile start"

This reverts commit 90ff18a788.

* send push notifications regardless of online status

go/k8s/dev/particleprocessorworker.yaml

@@ -43,3 +43,10 @@ spec:
             secretKeyRef:
               name: shared-secrets
               key: DEEPGRAM_SECRET
+        - name: "PUSHER_GRPC_ADDR"
+          value: "pusher:50051"
+        - name: "EXPO_ACCESS_TOKEN"
+          valueFrom:
+            secretKeyRef:
+              name: shared-secrets
+              key: EXPO_ACCESS_TOKEN