feat: cloud-init supports all documented KubeSolo CLI flags

Add missing flags (--local-storage-shared-path, --debug, --pprof-server,
--portainer-edge-id, --portainer-edge-key, --portainer-edge-async) so all
10 documented KubeSolo parameters can be configured via cloud-init YAML.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -2,7 +2,7 @@
 
 An immutable, bootable Linux distribution purpose-built for [KubeSolo](https://github.com/portainer/kubesolo) — Portainer's ultra-lightweight single-node Kubernetes.
 
-> **Status:** All 5 phases complete. Boots and runs K8s workloads. Portainer Edge Agent tested and connected.
+> **Status:** All 6 phases complete. Boots and runs K8s workloads. Portainer Edge Agent tested and connected.
 
 ## What is this?
 
@@ -122,7 +122,7 @@ Unnecessary subsystems (sound, GPU, wireless, Bluetooth, etc.) are stripped to k
 
 ## Cloud-Init
 
-First-boot configuration via a simple YAML schema:
+First-boot configuration via a simple YAML schema. All [documented KubeSolo flags](https://www.kubesolo.io/documentation#install) are supported:
 
 ```yaml
 hostname: edge-node-01
@@ -133,10 +133,15 @@ network:
   dns:
     - 8.8.8.8
 kubesolo:
-  node-name: edge-node-01
-portainer:
-  edge_id: "your-edge-id"
-  edge_key: "your-edge-key"
+  local-storage: true
+  local-storage-shared-path: "/mnt/shared"
+  apiserver-extra-sans:
+    - edge-node-01.local
+  debug: false
+  pprof-server: false
+  portainer-edge-id: "your-edge-id"
+  portainer-edge-key: "your-edge-key"
+  portainer-edge-async: true
 ```
 
 See [docs/cloud-init.md](docs/cloud-init.md) and the [examples](cloud-init/examples/).
@@ -227,6 +232,7 @@ Metrics include: `kubesolo_os_info`, `boot_success`, `boot_counter`, `uptime_sec
 | 3 | A/B atomic updates, GRUB, rollback agent | Complete |
 | 4 | Ed25519 signing, Portainer Edge, SSH extension | Complete |
 | 5 | CI/CD, OCI distribution, Prometheus metrics, ARM64 | Complete |
+| 6 | Security hardening, AppArmor, ARM64 RPi support | Complete |
 | - | Custom kernel build for container runtime fixes | Complete |
 
 ## License