docs: provide honest assessment of PVE 9 VM disk monitoring

Stop making definitive claims about what works or doesn't work. The reality:
- Some users (like you) have it working fine in cluster configs
- Others report 0% disk usage
- The exact conditions that make it work are unclear
- Results vary between different setups

Updated all docs and messages to reflect this uncertainty rather than making false claims about non-existent workarounds or absolute limitations.

docs/FAQ.md

@@ -91,11 +91,12 @@ Reduce `metricsRetentionDays` in settings and restart
 ### Why do VMs show 0% disk usage?
 This is usually one of these issues:
 
-**Proxmox 9**: API tokens cannot access guest agent data due to a Proxmox bug (#1373). Unfortunately there's no workaround:
-- VM.Monitor permission was removed in PVE 9 (replaced with VM.GuestAgent.Audit)
-- Even with correct permissions, API tokens are blocked from accessing VM disk info
-- You'll have to accept that VM disk usage will show 0% until Proxmox fixes this
-- Note: Container (LXC) disk usage works fine
+**Proxmox 9**: VM disk monitoring has mixed results:
+- Some users report it working fine, especially in cluster configurations
+- Others see 0% disk usage due to API token limitations
+- VM.Monitor permission was removed (replaced with VM.GuestAgent.Audit)
+- If you're seeing 0%, there's currently no reliable workaround
+- Note: Container (LXC) disk usage always works fine
 
 **Proxmox 8**: Check that:
 1. QEMU Guest Agent is installed and running in the VM

internal/api/config_handlers.go

@@ -2164,19 +2164,18 @@ else
     fi
     
     echo ""
-    echo "⚠️  IMPORTANT: Proxmox 9 VM Disk Usage Limitation"
-    echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
-    echo "VM disk usage may show 0% on Proxmox 9 due to API token limitations."
+    echo "⚠️  NOTE: Proxmox 9 VM Disk Usage"
+    echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+    echo "VM disk usage may show 0% on Proxmox 9 with API tokens."
     echo ""
-    echo "This is a known Proxmox issue where guest agent data (get-fsinfo)"
-    echo "is not accessible to API tokens, even with correct permissions."
-    echo "Proxmox's own web UI also shows 0% for VM disk usage (bug #1373)."
+    echo "This appears to be a Proxmox limitation where guest agent data"
+    echo "may not be accessible to API tokens in some configurations."
     echo ""
-    echo "Unfortunately, there are NO working workarounds for API tokens:"
-    echo "  1. VM.Monitor was removed in PVE 9 (replaced with VM.GuestAgent.Audit)"
-    echo "  2. Even with correct permissions, tokens can't access guest agent data"
-    echo "  3. Container (LXC) disk usage works correctly with tokens"
-    echo "  4. You'll have to accept 0% VM disk usage until Proxmox fixes this"
+    echo "Results vary:"
+    echo "  • Some users report it works, especially in cluster setups"
+    echo "  • Others see 0% disk usage for VMs"
+    echo "  • Container (LXC) disk usage always works correctly"
+    echo "  • If you see 0%, try configuring as a cluster if possible"
     echo ""
     echo "Note: qemu-guest-agent must be installed in VMs for any disk"
     echo "monitoring to work. The data exists but token access is restricted."

internal/monitoring/monitor.go

@@ -988,7 +988,7 @@ func (m *Monitor) pollVMsAndContainersEfficient(ctx context.Context, instanceNam
 								log.Info().
 									Str("instance", instanceName).
 									Str("vm", res.Name).
-									Msg("• Proxmox 9: API tokens cannot access guest agent data (Proxmox bug #1373)")
+									Msg("• Proxmox 9: API tokens may not be able to access guest agent data")
 								log.Info().
 									Str("instance", instanceName).
 									Str("vm", res.Name).
@@ -996,7 +996,7 @@ func (m *Monitor) pollVMsAndContainersEfficient(ctx context.Context, instanceNam
 								log.Info().
 									Str("instance", instanceName).
 									Str("vm", res.Name).
-									Msg("Unfortunately, there's no working workaround for API tokens on PVE 9 - VM disk will show 0%")
+									Msg("• Some PVE 9 users report it works in cluster configs, but results vary")
 							} else {
 								log.Debug().
 									Err(err).
@@ -1370,7 +1370,7 @@ func (m *Monitor) pollVMsWithNodes(ctx context.Context, instanceName string, cli
 						log.Info().
 							Str("instance", instanceName).
 							Str("vm", vm.Name).
-							Msg("• Proxmox 9: API tokens cannot access guest agent data (Proxmox bug #1373)")
+							Msg("• Proxmox 9: API tokens may not be able to access guest agent data")
 						log.Info().
 							Str("instance", instanceName).
 							Str("vm", vm.Name).
@@ -1378,7 +1378,7 @@ func (m *Monitor) pollVMsWithNodes(ctx context.Context, instanceName string, cli
 						log.Info().
 							Str("instance", instanceName).
 							Str("vm", vm.Name).
-							Msg("Unfortunately, there's no working workaround for API tokens on PVE 9 - VM disk will show 0%")
+							Msg("• Some PVE 9 users report it works in cluster configs, but results vary")
 					} else {
 						log.Debug().
 							Err(err).