v1.9.42: full Grafana/Prometheus GUI & CLI improvements

Grafana tab:
- Datasources table (Name, Type, URL, Default)
- Open Grafana button (opens browser)
- Switch to AlertManager endpoint for real-time active alerts

Prometheus tab:
- Quick query buttons (up, CPU, Memory)
- Metrics browser popup with filter (loads all metric names)
- Rules section (recording + alerting rules Treeview)

CLI:
- --grafana-datasources ALIAS
- --prom-rules ALIAS

i18n: 28 new keys (EN/RU/ZH)

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

core/grafana_client.py

@@ -138,6 +138,16 @@ class GrafanaClient:
             log.error("Grafana list_alerts failed: %s", exc)
             return []
 
+    def get_active_alerts(self) -> list[dict]:
+        """List active (firing) alerts via AlertManager endpoint."""
+        try:
+            results = self._get("/api/alertmanager/grafana/api/v2/alerts")
+            log.info("Grafana: %d active alerts", len(results))
+            return results
+        except Exception as exc:
+            log.error("Grafana get_active_alerts failed: %s", exc)
+            return []
+
     def list_datasources(self) -> list[dict]:
         """
         List all datasources via GET /api/datasources.

core/i18n.py

@@ -429,6 +429,19 @@ _EN = {
     "grafana_connected": "Connected to {alias}",
     "grafana_no_dashboards": "No dashboards found",
     "grafana_no_alerts": "No alerts",
+    "grafana_loading": "Loading...",
+    "grafana_loaded": "{dashboards} dashboards, {alerts} alerts, {datasources} datasources",
+    "grafana_no_server": "No server selected",
+    "grafana_open_browser": "Open Grafana",
+    "grafana_datasources": "Datasources",
+    "grafana_ds_name": "Name",
+    "grafana_ds_type": "Type",
+    "grafana_ds_default": "Default",
+    "grafana_dash_title": "Title",
+    "grafana_dash_folder": "Folder",
+    "grafana_alert_state": "State",
+    "grafana_alert_name": "Name",
+    "grafana_alert_severity": "Severity",
 
     # Prometheus tab
     "prom_refresh": "Refresh",
@@ -444,6 +457,23 @@ _EN = {
     "prom_no_targets": "No targets",
     "prom_no_alerts": "No alerts",
     "prom_placeholder": "up",
+    "prom_loading": "Loading...",
+    "prom_loaded": "{targets} targets, {alerts} alerts, {rules} rules",
+    "prom_no_server": "No server selected",
+    "prom_executing": "Executing...",
+    "prom_results": "Results",
+    "prom_query_placeholder": "e.g. up, node_cpu_seconds_total",
+    "prom_metrics_browser": "Metrics",
+    "prom_filter_metrics": "Filter metrics...",
+    "prom_rules": "Rules",
+    "prom_rule_type": "Type",
+    "prom_rule_name": "Name",
+    "prom_rule_group": "Group",
+    "prom_rule_health": "Health",
+    "prom_target_job": "Job",
+    "prom_target_instance": "Instance",
+    "prom_target_health": "Health",
+    "prom_target_scrape": "Last Scrape",
 
     # PowerShell tab
     "ps_execute": "Execute",
@@ -956,6 +986,19 @@ _RU = {
     "grafana_connected": "Подключено к {alias}",
     "grafana_no_dashboards": "Дашборды не найдены",
     "grafana_no_alerts": "Нет оповещений",
+    "grafana_loading": "Загрузка...",
+    "grafana_loaded": "{dashboards} дашб., {alerts} оповещ., {datasources} источн.",
+    "grafana_no_server": "Сервер не выбран",
+    "grafana_open_browser": "Открыть Grafana",
+    "grafana_datasources": "Источники данных",
+    "grafana_ds_name": "Имя",
+    "grafana_ds_type": "Тип",
+    "grafana_ds_default": "По умолч.",
+    "grafana_dash_title": "Название",
+    "grafana_dash_folder": "Папка",
+    "grafana_alert_state": "Состояние",
+    "grafana_alert_name": "Имя",
+    "grafana_alert_severity": "Серьёзность",
 
     # Prometheus tab
     "prom_refresh": "Обновить",
@@ -971,6 +1014,23 @@ _RU = {
     "prom_no_targets": "Нет целей",
     "prom_no_alerts": "Нет оповещений",
     "prom_placeholder": "up",
+    "prom_loading": "Загрузка...",
+    "prom_loaded": "{targets} целей, {alerts} оповещ., {rules} правил",
+    "prom_no_server": "Сервер не выбран",
+    "prom_executing": "Выполнение...",
+    "prom_results": "Результаты",
+    "prom_query_placeholder": "напр. up, node_cpu_seconds_total",
+    "prom_metrics_browser": "Метрики",
+    "prom_filter_metrics": "Фильтр метрик...",
+    "prom_rules": "Правила",
+    "prom_rule_type": "Тип",
+    "prom_rule_name": "Имя",
+    "prom_rule_group": "Группа",
+    "prom_rule_health": "Здоровье",
+    "prom_target_job": "Job",
+    "prom_target_instance": "Инстанс",
+    "prom_target_health": "Здоровье",
+    "prom_target_scrape": "Последний опрос",
 
     # PowerShell tab
     "ps_execute": "Выполнить",
@@ -1483,6 +1543,19 @@ _ZH = {
     "grafana_connected": "已连接到 {alias}",
     "grafana_no_dashboards": "未找到仪表盘",
     "grafana_no_alerts": "无告警",
+    "grafana_loading": "加载中...",
+    "grafana_loaded": "{dashboards}仪表盘, {alerts}告警, {datasources}数据源",
+    "grafana_no_server": "未选择服务器",
+    "grafana_open_browser": "打开Grafana",
+    "grafana_datasources": "数据源",
+    "grafana_ds_name": "名称",
+    "grafana_ds_type": "类型",
+    "grafana_ds_default": "默认",
+    "grafana_dash_title": "标题",
+    "grafana_dash_folder": "文件夹",
+    "grafana_alert_state": "状态",
+    "grafana_alert_name": "名称",
+    "grafana_alert_severity": "严重程度",
 
     # Prometheus tab
     "prom_refresh": "刷新",
@@ -1498,6 +1571,23 @@ _ZH = {
     "prom_no_targets": "无目标",
     "prom_no_alerts": "无告警",
     "prom_placeholder": "up",
+    "prom_loading": "加载中...",
+    "prom_loaded": "{targets}目标, {alerts}告警, {rules}规则",
+    "prom_no_server": "未选择服务器",
+    "prom_executing": "执行中...",
+    "prom_results": "结果",
+    "prom_query_placeholder": "例如 up, node_cpu_seconds_total",
+    "prom_metrics_browser": "指标",
+    "prom_filter_metrics": "过滤指标...",
+    "prom_rules": "规则",
+    "prom_rule_type": "类型",
+    "prom_rule_name": "名称",
+    "prom_rule_group": "组",
+    "prom_rule_health": "健康",
+    "prom_target_job": "任务",
+    "prom_target_instance": "实例",
+    "prom_target_health": "健康",
+    "prom_target_scrape": "最后抓取",
 
     # PowerShell tab
     "ps_execute": "执行",