v2.0.0 — MCP tools renamed verb-first

Breaking for MCP clients: all 7 tool names changed. The family now uses one naming convention, verb
first (list_…, get_…, search_…), so an agent that learns one skill can guess the next. Where two skills
would otherwise ship the same name, a domain word is added: vmware-aria already has get_alert /
list_alerts, so this skill's alert tools are log_ alerts.

Old name (≤ 1.9.1)	New name (2.0.0)
log_search	search_logs
log_aggregate	aggregate_logs
log_fields	list_log_fields
log_version	get_log_insight_version
alert_list	list_log_alerts
alert_get	get_log_alert
alert_history	get_log_alert_history

• Parameters, results and behaviour are unchanged (including the v1.9.1 query-constraint fix for issue #3).
  The audit log records the new names; CLI reads record their MCP twin's new name.
• CLI commands are unchanged (vmware-log-insight search, aggregate, fields, alert list|get|history).
• Deny rules in ~/.vmware/rules.yaml written with old names keep working with vmware-policy ≥ 1.18.0 (it
  matches both names); vmware-audit policy lists any rule that now matches more.