Add NOTES.txt to the patchmon chart

The centrepiece is the secret inventory: the four OnePasswordItem CRs carry
only item paths, while the fields each item must contain are decided in the
deployment. The notes list them per item — including the eight OIDC fields
nobody would guess — because a missing field does not fail the install, it
starts the container with an empty variable and misbehaves later.

The warnings are the ones this chart earns:

- Sign-in is OIDC-only. The chart sets OIDC_DISABLE_LOCAL_AUTH, so a wrong
  OIDC item locks everyone out with no local account to fall back on.
- A wrong ingress.domain never becomes Ready: the server answers 403 to any
  unknown Host header, the probes send that domain, and the log shows plain
  403s rather than anything resembling a configuration error.
- The first 2.x start rebuilds database indexes and may take minutes, so the
  notes print the actual startup budget and say a slow boot is not a hang.
- The presence registry is keyed by pod hostname, so replicas do not scale.

The startup budget is read through the null-safe probe helper, and the guacd
sidecar and scaled-down states are reported only when they apply. Refs #43.

patchmon/Chart.yaml

@@ -5,7 +5,7 @@ icon: https://raw.githubusercontent.com/PatchMon/PatchMon/main/frontend/public/a
 
 type: application
 
-version: 6.0.0+up2.1.3
+version: 6.1.0+up2.1.3
 appVersion: "2.1.3"
 
 maintainers: