Clean up useFallback for the push adapter

src/app/push/adapters/android.ts

@@ -5,7 +5,7 @@ import {maybe, now} from "@welshman/lib"
 import type {Filter} from "@welshman/util"
 import type {Session} from "@welshman/app"
 import {app, session} from "@app/core"
-import {pushState} from "@app/push/adapters/common"
+import {pushState, requiresFallback} from "@app/push/adapters/common"
 import type {IPushAdapter} from "@app/push/adapters/common"
 import {syncRelaySubscriptions} from "@app/push/adapters/common"
 
@@ -92,6 +92,6 @@ export class AndroidFallbackNotifications implements IPushAdapter {
 
     await AndroidPushFallback.syncState({state: {}})
 
-    pushState.set({})
+    pushState.set({useFallback: requiresFallback})
   }
 }

src/app/push/adapters/common.ts

@@ -1,5 +1,6 @@
 import {writable} from "svelte/store"
 import type {Subscriber, Unsubscriber} from "svelte/store"
+import {Capacitor} from "@capacitor/core"
 import {assoc, call, ms, now, on, parseJson, poll, spec, throttle, uniq} from "@welshman/lib"
 import {LOCAL_RELAY_URL} from "@welshman/net"
 import type {RepositoryUpdate} from "@welshman/net"
@@ -33,7 +34,11 @@ export type PushState = {
   subscription?: PushSubscription
 }
 
-export const pushState = withGetter(writable<PushState>({}))
+// The F-Droid build ships without the push plugin, so those installs can only ever poll
+export const requiresFallback =
+  Capacitor.getPlatform() === "android" && !Capacitor.isPluginAvailable("PushNotifications")
+
+export const pushState = withGetter(writable<PushState>({useFallback: requiresFallback}))
 
 export interface IPushAdapter {
   request: (prompt?: boolean) => Promise<string>

src/app/push/index.ts

@@ -18,10 +18,7 @@ export class Push {
 
       if (Capacitor.getPlatform() === "electron") {
         Push._adapter = new ElectronNotifications()
-      } else if (
-        Capacitor.getPlatform() === "android" &&
-        (useFallback || !Capacitor.isPluginAvailable("PushNotifications"))
-      ) {
+      } else if (Capacitor.getPlatform() === "android" && useFallback) {
         Push._adapter = new AndroidFallbackNotifications()
       } else if (Capacitor.isPluginAvailable("PushNotifications")) {
         Push._adapter = new CapacitorNotifications()