Initial commit: custom OpenClaw skills from docker-test

- workspace: capmetro-monitor, github-notifications, model-selector
- workspace-security: vt-monitor, monitor-unauthorized
- workspace-home: cron-manager, monitor-unauthorized
- extensions: vt-sentinel (VT-Sentinel plugin)

Includes sync.sh for pull/push, README, AGENTS.md, .gitignore.

workspace/model-selector/scripts/validate-model.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# validate-model.sh — Validate that a model ID exists in the LLM proxy
+# Usage: validate-model.sh <model-id>
+# Exit 0 if valid, 1 if not found
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+if [[ $# -lt 1 ]]; then
+  echo "Usage: validate-model.sh <model-id>" >&2
+  echo "Example: validate-model.sh nanogpt/deepseek-chat" >&2
+  exit 1
+fi
+
+MODEL_ID="$1"
+
+# Strip llm-proxy/ prefix if present (user might pass the openclaw.json format)
+MODEL_ID="${MODEL_ID#llm-proxy/}"
+
+# Get the live model list
+available=$("$SCRIPT_DIR/list-models.sh" 2>/dev/null) || {
+  echo "ERROR: Could not fetch model list from LLM proxy" >&2
+  exit 1
+}
+
+if echo "$available" | grep -qxF "$MODEL_ID"; then
+  echo "✅ Model '$MODEL_ID' is available"
+  exit 0
+else
+  echo "❌ Model '$MODEL_ID' NOT found in /v1/models" >&2
+  # Suggest close matches
+  partial=$(echo "$available" | grep -i "$(echo "$MODEL_ID" | sed 's|.*/||')" | head -5)
+  if [[ -n "$partial" ]]; then
+    echo "" >&2
+    echo "Did you mean one of these?" >&2
+    echo "$partial" | sed 's/^/  /' >&2
+  fi
+  exit 1
+fi