ui: F1 — populate OpenAlerts in baseView so nav badge updates everywhere

Flagged in review of 35dee98: the Alerts tab badge should show the
open count from any page, not just /alerts. baseView now takes the
request and queries store.ListAlerts(Status: "open") to fill
view.OpenAlerts on every page render. All call sites updated.

internal/server/http/ui_handlers.go

@@ -93,12 +93,20 @@ func (s *Server) requireUIUser(w stdhttp.ResponseWriter, r *stdhttp.Request) *ui
 // OpenAlerts is populated via a quick store count so the nav badge
 // stays current on every page load without requiring a page-specific
 // store call.
-func (s *Server) baseView(u *ui.User) ui.ViewData {
-	return ui.ViewData{
+func (s *Server) baseView(r *stdhttp.Request, u *ui.User) ui.ViewData {
+	view := ui.ViewData{
 		User:    u,
 		Active:  "dashboard",
 		Version: s.version(),
 	}
+
+	// Populate OpenAlerts from the store so the nav badge shows the
+	// current count on every page.
+	if open, err := s.deps.Store.ListAlerts(r.Context(), store.AlertFilter{Status: "open"}); err == nil {
+		view.OpenAlerts = len(open)
+	}
+
+	return view
 }
 
 // version returns the binary's build version — passed in via Deps so
@@ -231,8 +239,7 @@ func (s *Server) handleUIDashboard(w stdhttp.ResponseWriter, r *stdhttp.Request)
 		slog.Warn("ui dashboard: list pending hosts", "err", perr)
 	}
 
-	view := s.baseView(u)
-	view.OpenAlerts = summary.OpenAlerts
+	view := s.baseView(r, u)
 	view.Page = dashboardPage{
 		Hosts:        rows,
 		HostCount:    len(hosts),
@@ -299,7 +306,7 @@ func (s *Server) handleUIAddHostGet(w stdhttp.ResponseWriter, r *stdhttp.Request
 	if u == nil {
 		return
 	}
-	view := s.baseView(u)
+	view := s.baseView(r, u)
 	view.Title = "Add host · restic-manager"
 	view.Page = addHostPage{ServerURL: s.publicURL(r)}
 	if err := s.deps.UI.Render(w, "add_host", view); err != nil {
@@ -371,7 +378,7 @@ func (s *Server) handleUIAddHostPost(w stdhttp.ResponseWriter, r *stdhttp.Reques
 		}
 	}
 
-	view := s.baseView(u)
+	view := s.baseView(r, u)
 	view.Title = "Add host · restic-manager"
 	view.Page = page
 	w.WriteHeader(stdhttp.StatusUnprocessableEntity)
@@ -438,7 +445,7 @@ func (s *Server) handleUIPendingHost(w stdhttp.ResponseWriter, r *stdhttp.Reques
 		}
 	}
 
-	view := s.baseView(u)
+	view := s.baseView(r, u)
 	view.Title = "Pending host · restic-manager"
 	view.Page = page
 	if err := s.deps.UI.Render(w, "pending_host", view); err != nil {
@@ -616,7 +623,7 @@ func (s *Server) handleUIHostDetail(w stdhttp.ResponseWriter, r *stdhttp.Request
 		shown = shown[:cap]
 	}
 
-	view := s.baseView(u)
+	view := s.baseView(r, u)
 	view.Title = host.Name + " · restic-manager"
 	view.Page = hostDetailPage{
 		hostChromeData: s.loadHostChrome(r, *host, "snapshots", "snapshots"),
@@ -716,7 +723,7 @@ func (s *Server) handleUIJobDetail(w stdhttp.ResponseWriter, r *stdhttp.Request)
 		nextSeq = logs[n-1].Seq
 	}
 
-	view := s.baseView(u)
+	view := s.baseView(r, u)
 	view.Title = job.Kind + " · " + host.Name + " · restic-manager"
 	view.Page = jobDetailPage{
 		Job:      *job,