feat(cmdb-assistant): add data quality validation v1.1.0

Add validation hooks, best practices skill, and new commands to enforce
NetBox data quality standards:

Hooks:
- SessionStart: Test NetBox connectivity, report data quality issues
- PreToolUse: Validate VM/device parameters before create/update

New Commands:
- /cmdb-audit: Data quality analysis (vms, devices, naming, roles)
- /cmdb-register: Register current machine with running applications
- /cmdb-sync: Sync machine state with NetBox, detect drift

Best Practices Skill:
- Dependency order (regions -> sites -> devices -> VMs)
- Site/tenant/platform assignment requirements
- Naming conventions enforcement
- Role consolidation guidance

Updated agent with validation requirements, dependency order checks,
naming convention warnings, and duplicate prevention.

Marketplace: 5.0.0 -> 5.1.0
Plugin: 1.0.0 -> 1.1.0

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/cmdb-assistant/hooks/hooks.json

@@ -0,0 +1,21 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "type": "command",
+        "command": "${CLAUDE_PLUGIN_ROOT}/hooks/startup-check.sh"
+      }
+    ],
+    "PreToolUse": [
+      {
+        "matcher": "mcp__plugin_cmdb-assistant_netbox__virt_create|mcp__plugin_cmdb-assistant_netbox__virt_update|mcp__plugin_cmdb-assistant_netbox__dcim_create|mcp__plugin_cmdb-assistant_netbox__dcim_update",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/validate-input.sh"
+          }
+        ]
+      }
+    ]
+  }
+}