feat(agent): safety check display

* fix(i18n): add missing agent tool step translations for zh-TW, pt-BR, it, ja

* propagate explainData to agent step items for ExplainPlanViewer

* feat(ai): show safety check result for execute_query tool steps

apps/desktop/src/components/editor/AiAssistant.vue

@@ -346,10 +346,14 @@ function agentEventToStep(event: AgentEvent, index: number): AiAgentStepItem | u
 
   if (event.type !== "tool_call_start" && event.type !== "tool_call_end") return undefined;
 
+  const isExecuteQuery = event.tool_name === "execute_query";
+  const labelKey = event.type === "tool_call_start" ? "ai.agentSteps.callingTool" : isExecuteQuery ? (event.is_error ? "ai.agentSteps.executeBlocked" : "ai.agentSteps.executeSafe") : event.is_error ? "ai.agentSteps.toolError" : "ai.agentSteps.toolDone";
+  const tone = (event.type === "tool_call_start" ? "active" : event.is_error ? "danger" : "success") as AiAgentStepTone;
+
   return {
     key: `${event.tool_call_id || ""}-${event.type}`,
-    labelKey: event.type === "tool_call_start" ? "ai.agentSteps.callingTool" : event.is_error ? "ai.agentSteps.toolError" : "ai.agentSteps.toolDone",
-    tone: (event.type === "tool_call_start" ? "active" : event.is_error ? "danger" : "success") as AiAgentStepTone,
+    labelKey,
+    tone,
     titleKey: undefined,
     titleParams: { tool: event.tool_name || "" },
     toolName: event.tool_name,

apps/desktop/src/i18n/locales/en.ts

@@ -986,6 +986,8 @@
       callingTool: "Calling tool...",
       toolDone: "Tool completed",
       toolError: "Tool error",
+      executeSafe: "Safety check passed · Executed",
+      executeBlocked: "Blocked by safety check",
       contextCompacted: "Context compressed",
     },
     agentStepTitles: {

apps/desktop/src/i18n/locales/it.ts

@@ -933,6 +933,8 @@
       callingTool: "Chiamata strumento...",
       toolDone: "Strumento completato",
       toolError: "Errore strumento",
+      executeSafe: "Controllo di sicurezza superato · Eseguito",
+      executeBlocked: "Bloccato dal controllo di sicurezza",
       contextCompacted: "Contesto compresso",
     },
     agentStepTitles: {

apps/desktop/src/i18n/locales/ja.ts

@@ -983,6 +983,8 @@ export default {
       callingTool: "ツールを呼び出し中...",
       toolDone: "ツール完了",
       toolError: "ツールエラー",
+      executeSafe: "安全チェック通過 · 実行済み",
+      executeBlocked: "安全チェックによりブロック",
       contextCompacted: "コンテキストを圧縮しました",
     },
     agentStepTitles: {

apps/desktop/src/i18n/locales/pt-BR.ts

@@ -933,6 +933,8 @@
       callingTool: "Chamando ferramenta...",
       toolDone: "Ferramenta concluída",
       toolError: "Erro da ferramenta",
+      executeSafe: "Verificação de segurança aprovada · Executado",
+      executeBlocked: "Bloqueado pela verificação de segurança",
       contextCompacted: "Contexto compactado",
     },
     agentStepTitles: {

apps/desktop/src/i18n/locales/zh-CN.ts

@@ -985,6 +985,8 @@
       callingTool: "正在调用工具...",
       toolDone: "工具调用完成",
       toolError: "工具调用出错",
+      executeSafe: "安全检查通过 · 已执行",
+      executeBlocked: "安全检查拦截",
       contextCompacted: "上下文已压缩",
     },
     agentStepTitles: {

apps/desktop/src/i18n/locales/zh-TW.ts

@@ -912,6 +912,8 @@
       callingTool: "正在調用工具...",
       toolDone: "工具調用完成",
       toolError: "工具調用出錯",
+      executeSafe: "安全檢查通過 · 已執行",
+      executeBlocked: "安全檢查攔截",
       contextCompacted: "上下文已壓縮",
     },
     agentStepTitles: {