Remove the RepoISO integration; keep generic support for shares of other services

RepoISO now manages the NAS itself, so nasmon no longer polls it (settings field, dashboard card,
menu link and repoiso:* alerts are gone). Drop-in SMB includes, read-only listing and keeping
smbd/nfs-server running for other software's shares stay.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/sched/sched.go

@@ -54,7 +54,6 @@ type Status struct {
 	NextSmartCheck time.Time             `json:"next_smart_check"`
 	SmartRunning   bool                  `json:"smart_running"`
 	LastMailErr    string                `json:"last_mail_err,omitempty"`
-	RepoISO        *collect.RepoISO      `json:"repoiso,omitempty"`
 }
 
 type Scheduler struct {
@@ -244,11 +243,6 @@ func (s *Scheduler) collectStorage() {
 	root, _ := collect.ReadFS("/")
 	alerts, _ := s.st.ActiveAlerts()
 	services := collect.ReadShareServices()
-	var repoiso *collect.RepoISO
-	if url := s.cfg.Get().Integrations.RepoISOURL; url != "" {
-		r := collect.FetchRepoISO(url)
-		repoiso = &r
-	}
 
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -270,7 +264,6 @@ func (s *Scheduler) collectStorage() {
 	s.status.RootFS = root
 	s.status.Alerts = alerts
 	s.status.Services = services
-	s.status.RepoISO = repoiso
 }
 
 // buildViews merges lsblk disks with cached SMART data; caller holds s.mu.
@@ -426,8 +419,7 @@ func (s *Scheduler) evaluate() {
 		Disks: nil, Pools: st.Pools, PoolsOK: st.PoolsErr == "",
 		CPUTemp: st.CPUTemp, HasCPU: st.HasCPUTemp,
 		RootFS: st.RootFS, RootOK: st.RootFS.Total > 0,
-		Prev:    map[string]*collect.Smart{},
-		RepoISO: st.RepoISO,
+		Prev: map[string]*collect.Smart{},
 	}
 	for _, v := range st.Disks {
 		in.Disks = append(in.Disks, v.Disk)