feat(skills): add ArgoCD skill for Kubernetes deployments

- Document SSH access requirement (192.168.200.1)
- Cover dev and prod environments
- Include common workflows: deploy, rollback, health checks
- List managed repositories
- Add troubleshooting section

skills/argocd/SKILL.md

@@ -0,0 +1,178 @@
+---
+name: argocd
+description: "Manage Kubernetes deployments via ArgoCD. Sync applications, check health, view history, and rollback deployments across dev and prod environments."
+metadata: {"openclaw":{"emoji":"🦑","requires":{"bins":["ssh","argocd"]}}}
+---
+
+# ArgoCD Skill
+
+Manage Kubernetes application deployments using ArgoCD CLI. Supports dev and prod environments at Telnyx.
+
+## ⚠️ Access Requirement
+
+**All ArgoCD commands must be run via SSH to the main machine first:**
+
+```bash
+ssh daan@192.168.200.1
+```
+
+The `argocd` CLI is installed there with access to both environments.
+
+## Environments
+
+| Environment | URL | Cluster |
+|-------------|-----|---------|
+| dev | `argo-cd.query.dev.telnyx.io:8080` | gce-management-ch1-dev |
+| prod | `argo-cd.query.prod.telnyx.io:8080` | gce-management-dc2-prod |
+
+## Context Management
+
+Switch between environments:
+
+```bash
+# Switch to dev
+argocd context dev
+
+# Switch to prod
+argocd context prod
+
+# Login (if session expired) - opens browser for SSO
+argocd login argo-cd.query.dev.telnyx.io:8080 --sso
+argocd login argo-cd.query.prod.telnyx.io:8080 --sso
+```
+
+## Common Commands
+
+### List Applications
+
+```bash
+# List all apps in current context
+argocd app list
+
+# Filter by project or name
+argocd app list | grep <pattern>
+```
+
+### Check Application Status
+
+```bash
+# Get detailed app info (status, health, sync state)
+argocd app get <app-name>
+
+# Check health only
+argocd app health <app-name>
+```
+
+### Deploy (Sync)
+
+```bash
+# Sync an application (deploy latest)
+argocd app sync <app-name>
+
+# Sync with prune (remove resources not in git)
+argocd app sync <app-name> --prune
+
+# Sync specific resources only
+argocd app sync <app-name> --resource <group>:<kind>:<name>
+```
+
+### Preview Changes
+
+```bash
+# Show diff between live and desired state
+argocd app diff <app-name>
+```
+
+### History & Rollback
+
+```bash
+# View deployment history
+argocd app history <app-name>
+
+# Rollback to a previous revision
+argocd app rollback <app-name> <history-id>
+```
+
+## Common Workflows
+
+### Deploy to Dev
+
+```bash
+ssh daan@192.168.200.1
+argocd context dev
+argocd app sync <app-name>
+argocd app get <app-name>  # verify health
+```
+
+### Deploy to Prod
+
+```bash
+ssh daan@192.168.200.1
+argocd context prod
+argocd app diff <app-name>  # preview changes first!
+argocd app sync <app-name>
+argocd app get <app-name>  # verify health
+```
+
+### Check App Health Across Environments
+
+```bash
+ssh daan@192.168.200.1
+
+# Dev
+argocd context dev
+argocd app get <app-name> | head -20
+
+# Prod
+argocd context prod
+argocd app get <app-name> | head -20
+```
+
+### Emergency Rollback
+
+```bash
+ssh daan@192.168.200.1
+argocd context prod
+argocd app history <app-name>  # find good revision
+argocd app rollback <app-name> <revision-id>
+```
+
+## Managed Repositories
+
+ArgoCD syncs from these Git repositories:
+
+- `https://github.com/team-telnyx/deploy-infra-bare-metal-main`
+- `https://github.com/team-telnyx/infra-svc-k8s-addons/`
+
+## Troubleshooting
+
+### App Stuck in "Progressing"
+
+```bash
+# Check events and pod status
+argocd app get <app-name> --show-operation
+```
+
+### Sync Failed
+
+```bash
+# Get detailed sync result
+argocd app get <app-name>
+
+# Check for resource conflicts
+argocd app diff <app-name>
+```
+
+### Session Expired
+
+```bash
+# Re-authenticate via SSO
+argocd login argo-cd.query.dev.telnyx.io:8080 --sso
+```
+
+## Tips
+
+- **Always check `diff` before syncing to prod** - know what you're deploying
+- **Use `--prune` carefully** - it removes resources not in git
+- **Check history before rollback** - find the right revision ID
+- **Health ≠ Synced** - an app can be synced but unhealthy (pods crashing)