docs: comprehensive v4.24.0 documentation audit and updates

Complete documentation overhaul for Pulse v4.24.0 release covering all new
features and operational procedures.

Documentation Updates (19 files):

P0 Release-Critical:
- Operations: Rewrote ADAPTIVE_POLLING_ROLLOUT.md as GA operations runbook
- Operations: Updated ADAPTIVE_POLLING_MANAGEMENT_ENDPOINTS.md with DEFERRED status
- Operations: Enhanced audit-log-rotation.md with scheduler health checks
- Security: Updated proxy hardening docs with rate limit defaults
- Docker: Added runtime logging and rollback procedures

P1 Deployment & Integration:
- KUBERNETES.md: Runtime logging config, adaptive polling, post-upgrade verification
- PORT_CONFIGURATION.md: Service naming, change tracking via update history
- REVERSE_PROXY.md: Rate limit headers, error pass-through, v4.24.0 verification
- PROXY_AUTH.md, OIDC.md, WEBHOOKS.md: Runtime logging integration
- TROUBLESHOOTING.md, VM_DISK_MONITORING.md, zfs-monitoring.md: Updated workflows

Features Documented:
- X-RateLimit-* headers for all API responses
- Updates rollback workflow (UI & CLI)
- Scheduler health API with rich metadata
- Runtime logging configuration (no restart required)
- Adaptive polling (GA, enabled by default)
- Enhanced audit logging
- Circuit breakers and dead-letter queue

Supporting Changes:
- Discovery service enhancements
- Config handlers updates
- Sensor proxy installer improvements

Total Changes: 1,626 insertions(+), 622 deletions(-)
Files Modified: 24 (19 docs, 5 code)

All documentation is production-ready for v4.24.0 release.

docs/TEMPERATURE_MONITORING.md

@@ -123,6 +123,21 @@ When you need to provision the proxy yourself (for example via your own automati
 
 After the container restarts, the backend will automatically use the proxy. To refresh SSH keys on cluster nodes (e.g., after adding a new node), SSH to your Proxmox host and re-run the setup script: `curl -fsSL https://get.pulsenode.com/install-proxy.sh | bash -s -- --ctid <your-container-id>`
 
+### Post-install Verification (v4.24.0+)
+
+1. **Confirm proxy metrics**
+   ```bash
+   curl -s http://127.0.0.1:9127/metrics | grep pulse_proxy_build_info
+   ```
+2. **Ensure adaptive polling sees the proxy**
+   ```bash
+   curl -s http://localhost:7655/api/monitoring/scheduler/health \
+     | jq '.instances[] | select(.key | contains("temperature")) | {key, pollStatus}'
+   ```
+   - Expect recent `lastSuccess` timestamps, `breaker.state == "closed"`, and `deadLetter.present == false`.
+3. **Check update history** – Any future proxy restarts/rollbacks are logged under **Settings → System → Updates**; include the associated `event_id` in post-change notes.
+4. **Measure queue depth/staleness** – Grafana panels `pulse_monitor_poll_queue_depth` and `pulse_monitor_poll_staleness_seconds` should return to baseline within a few polling cycles.
+
 ### Legacy Architecture (Pre-v4.24.0 / Native Installs)
 
 For native (non-containerized) installations, Pulse connects directly via SSH: