feat: auto-subscribe push on login, better push logging

- Auto-subscribe to push on login, register, and session restore
- Guard against nil db in SendChannelNotification
- Log push send count per channel message
- Bump SW cache to v5

internal/push/handlers.go

@@ -185,7 +185,7 @@ func (h *Handler) SendPush(ctx context.Context, userID string, payload map[strin
 // SendChannelNotification sends a push notification to all server members (except the author)
 // when a new message is posted in a channel.
 func (h *Handler) SendChannelNotification(ctx context.Context, channelID, authorID, channelName, content string) {
-	if h.vapidPub == "" || h.vapidPriv == "" {
+	if h.vapidPub == "" || h.vapidPriv == "" || h.db == nil {
 		return
 	}
 
@@ -196,6 +196,8 @@ func (h *Handler) SendChannelNotification(ctx context.Context, channelID, author
 		return
 	}
 
+	h.logger.Info("sending push notifications", "channel", channelName, "author", authorID)
+
 	body := content
 	if len(body) > 200 {
 		body = body[:200] + "..."
@@ -221,6 +223,7 @@ func (h *Handler) SendChannelNotification(ctx context.Context, channelID, author
 	}
 	defer rows.Close()
 
+	sent := 0
 	for rows.Next() {
 		var userID, endpoint, p256dh, auth string
 		if err := rows.Scan(&userID, &endpoint, &p256dh, &auth); err != nil {
@@ -250,8 +253,12 @@ func (h *Handler) SendChannelNotification(ctx context.Context, channelID, author
 		}
 		if resp != nil {
 			resp.Body.Close()
+			if resp.StatusCode < 300 {
+				sent++
 			}
 		}
+	}
+	h.logger.Info("push notifications sent", "count", sent, "channel", channelName)
 }
 
 // GenerateVAPIDKeys is in cmd/keygen. Use github.com/SherClockHolmes/webpush-go directly.

web/public/sw.js

@@ -1,6 +1,6 @@
 // Dumpster PWA Service Worker
 // Bump CACHE_VERSION on each deploy to force re-cache of hashed assets.
-const CACHE_VERSION = 'dumpster-v4';
+const CACHE_VERSION = 'dumpster-v5';
 const OFFLINE_URL = '/offline.html';
 
 // Assets to pre-cache on install (shell files)

web/src/stores/auth.ts

@@ -71,6 +71,16 @@ interface AuthState {
   clearError: () => void;
 }
 
+// ponytail: auto-subscribe to push notifications on auth
+function autoSubscribePush() {
+  import("../stores/push.ts").then(({ usePushStore }) => {
+    const ps = usePushStore.getState();
+    if (ps.isSupported && Notification.permission !== 'denied' && !ps.isSubscribed) {
+      ps.subscribe();
+    }
+  });
+}
+
 export const useAuthStore = create<AuthState>((set) => ({
   user: null,
   isAuthenticated: false,
@@ -86,6 +96,7 @@ export const useAuthStore = create<AuthState>((set) => ({
       });
       const user = await api.get<User>("/auth/me");
       set({ user, isAuthenticated: true, isLoading: false });
+      autoSubscribePush();
     } catch (error) {
       set({
         isLoading: false,
@@ -106,6 +117,7 @@ export const useAuthStore = create<AuthState>((set) => ({
       });
       const user = await api.get<User>("/auth/me");
       set({ user, isAuthenticated: true, isLoading: false });
+      autoSubscribePush();
     } catch (error) {
       set({
         isLoading: false,
@@ -135,6 +147,7 @@ export const useAuthStore = create<AuthState>((set) => ({
     try {
       const user = await api.get<User>(`/auth/me?t=${Date.now()}`);
       set({ user, isAuthenticated: true, isLoading: false });
+      autoSubscribePush();
     } catch (error) {
       set({
         user: null,