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/internal/network/reader.go

@@ -16,11 +16,11 @@ type Reader interface {
 	ListForHuman(ctx context.Context, humanId string) ([]*Network, error)
 	// IsMember returns ErrInvalidHumanId if humanId is empty.
 	IsMember(ctx context.Context, networkID, humanId string) (bool, error)
-	// ListAll returns all networks with their members
+	// ListMembers returns an empty slice if the network doesn't exist.
+	ListMembers(ctx context.Context, networkID string) ([]string, error)
 	ListAll(ctx context.Context) ([]*Network, error)
 	// ListAllMemberships returns humanId -> networkIds for every human with at
 	// least one membership. Humans with zero memberships are absent from the map.
-	// Used by the membership reconciler to diff the Firestore mirror.
 	ListAllMemberships(ctx context.Context) (map[string][]string, error)
 
 	CountSeats(ctx context.Context, networkID string) (int, error)
@@ -34,8 +34,8 @@ type readerImpl struct {
 	repo repository
 }
 
-// newReader returns the concrete reader. Used by NewService to embed without
-// going through the Reader interface (which would hide pool/repo).
+// newReader exposes the concrete type so the service can embed it without
+// hiding pool/repo behind the Reader interface.
 func newReader(pool *pgxpool.Pool) *readerImpl {
 	return &readerImpl{
 		pool: pool,
@@ -69,6 +69,12 @@ func (r *readerImpl) IsMember(ctx context.Context, networkID, humanId string) (b
 	return r.repo.isMember(ctx, networkID, humanId)
 }
 
+func (r *readerImpl) ListMembers(ctx context.Context, networkID string) ([]string, error) {
+	// Admin is guaranteed to be in network_members: Create() calls AddMembers
+	// for the admin, and RemoveMemberFromNetwork rejects admin removal.
+	return r.repo.getMemberHumanIds(ctx, networkID)
+}
+
 func (r *readerImpl) ListAll(ctx context.Context) ([]*Network, error) {
 	return r.repo.listAll(ctx)
 }