diff --git a/frontend/src/components/Step4Report.vue b/frontend/src/components/Step4Report.vue
index 214fea6..ee71135 100644
--- a/frontend/src/components/Step4Report.vue
+++ b/frontend/src/components/Step4Report.vue
@@ -392,9 +392,11 @@
 <script setup>
 import { ref, computed, watch, onMounted, onUnmounted, nextTick, h, reactive } from 'vue'
 import { useRouter } from 'vue-router'
+import { useI18n } from 'vue-i18n'
 import { getAgentLog, getConsoleLog } from '../api/report'
 
 const router = useRouter()
+const { t } = useI18n()
 
 const props = defineProps({
   reportId: String,
@@ -962,6 +964,7 @@ const parseQuickSearch = (text) => {
 const InsightDisplay = {
   props: ['result', 'resultLength'],
   setup(props) {
+    const { t } = useI18n()
     const activeTab = ref('facts') // 'facts', 'entities', 'relations', 'subqueries'
     const expandedFacts = ref(false)
     const expandedEntities = ref(false)
@@ -1055,9 +1058,9 @@ const InsightDisplay = {
           props.result.facts.length > INITIAL_SHOW_COUNT && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedFacts.value = !expandedFacts.value }
-          }, expandedFacts.value ? `收起 ▲` : `展开全部 ${props.result.facts.length} 条 ▼`)
+          }, expandedFacts.value ? t('step4.collapse') : t('step4.expandAll', { count: props.result.facts.length }))
         ]),
-        
+
         // Entities Tab
         activeTab.value === 'entities' && props.result.entities.length > 0 && h('div', { class: 'entities-panel' }, [
           h('div', { class: 'panel-header' }, [
@@ -1076,9 +1079,9 @@ const InsightDisplay = {
           props.result.entities.length > 12 && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedEntities.value = !expandedEntities.value }
-          }, expandedEntities.value ? `收起 ▲` : `展开全部 ${props.result.entities.length} 个 ▼`)
+          }, expandedEntities.value ? t('step4.collapse') : t('step4.expandAllEntities', { count: props.result.entities.length }))
         ]),
-        
+
         // Relations Tab
         activeTab.value === 'relations' && props.result.relations.length > 0 && h('div', { class: 'relations-panel' }, [
           h('div', { class: 'panel-header' }, [
@@ -1101,9 +1104,9 @@ const InsightDisplay = {
           props.result.relations.length > INITIAL_SHOW_COUNT && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedRelations.value = !expandedRelations.value }
-          }, expandedRelations.value ? `收起 ▲` : `展开全部 ${props.result.relations.length} 条 ▼`)
+          }, expandedRelations.value ? t('step4.collapse') : t('step4.expandAll', { count: props.result.relations.length }))
         ]),
-        
+
         // Sub-queries Tab
         activeTab.value === 'subqueries' && props.result.subQueries.length > 0 && h('div', { class: 'subqueries-panel' }, [
           h('div', { class: 'panel-header' }, [
@@ -1133,6 +1136,7 @@ const InsightDisplay = {
 const PanoramaDisplay = {
   props: ['result', 'resultLength'],
   setup(props) {
+    const { t } = useI18n()
     const activeTab = ref('active') // 'active', 'historical', 'entities'
     const expandedActive = ref(false)
     const expandedHistorical = ref(false)
@@ -1211,7 +1215,7 @@ const PanoramaDisplay = {
           props.result.activeFacts.length > INITIAL_SHOW_COUNT && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedActive.value = !expandedActive.value }
-          }, expandedActive.value ? `收起 ▲` : `展开全部 ${props.result.activeFacts.length} 条 ▼`)
+          }, expandedActive.value ? t('step4.collapse') : t('step4.expandAll', { count: props.result.activeFacts.length }))
         ]),
         
         // Historical Facts Tab
@@ -1243,7 +1247,7 @@ const PanoramaDisplay = {
           props.result.historicalFacts.length > INITIAL_SHOW_COUNT && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedHistorical.value = !expandedHistorical.value }
-          }, expandedHistorical.value ? `收起 ▲` : `展开全部 ${props.result.historicalFacts.length} 条 ▼`)
+          }, expandedHistorical.value ? t('step4.collapse') : t('step4.expandAll', { count: props.result.historicalFacts.length }))
         ]),
         
         // Entities Tab
@@ -1263,7 +1267,7 @@ const PanoramaDisplay = {
           props.result.entities.length > 8 && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedEntities.value = !expandedEntities.value }
-          }, expandedEntities.value ? `收起 ▲` : `展开全部 ${props.result.entities.length} 个 ▼`)
+          }, expandedEntities.value ? t('step4.collapse') : t('step4.expandAllEntities', { count: props.result.entities.length }))
         ])
       ])
     ])
@@ -1577,6 +1581,7 @@ const InterviewDisplay = {
 const QuickSearchDisplay = {
   props: ['result', 'resultLength'],
   setup(props) {
+    const { t } = useI18n()
     const activeTab = ref('facts') // 'facts', 'edges', 'nodes'
     const expandedFacts = ref(false)
     const INITIAL_SHOW_COUNT = 5
@@ -1656,7 +1661,7 @@ const QuickSearchDisplay = {
           props.result.facts.length > INITIAL_SHOW_COUNT && h('button', {
             class: 'expand-btn',
             onClick: () => { expandedFacts.value = !expandedFacts.value }
-          }, expandedFacts.value ? `收起 ▲` : `展开全部 ${props.result.facts.length} 条 ▼`)
+          }, expandedFacts.value ? t('step4.collapse') : t('step4.expandAll', { count: props.result.facts.length }))
         ]),
         
         // Edges Tab
diff --git a/locales/en.json b/locales/en.json
index 4601b92..7336ca0 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -210,7 +210,10 @@
   "step4": {
     "generatingSection": "Generating {title}...",
     "goToInteraction": "Enter Deep Interaction",
-    "waitingForReportAgent": "Waiting for Report Agent..."
+    "waitingForReportAgent": "Waiting for Report Agent...",
+    "collapse": "Collapse ▲",
+    "expandAll": "Show all {count} ▼",
+    "expandAllEntities": "Show all {count} ▼"
   },
   "step5": {
     "interactiveTools": "Interactive Tools",
@@ -527,5 +530,102 @@
     "enterStep": "Entering Step {step}: {name}",
     "returnToStep": "Returning to Step {step}: {name}",
     "customSimRounds": "Custom simulation rounds: {rounds} rounds"
+  },
+  "report": {
+    "taskStarted": "Report generation task started",
+    "planningStart": "Starting report outline planning",
+    "fetchSimContext": "Fetching simulation context",
+    "planningComplete": "Outline planning complete",
+    "sectionStart": "Starting section generation: {title}",
+    "reactThought": "ReACT round {iteration} thinking",
+    "toolCall": "Calling tool: {toolName}",
+    "toolResult": "Tool {toolName} returned result",
+    "llmResponse": "LLM response (tool calls: {hasToolCalls}, final answer: {hasFinalAnswer})",
+    "sectionContentDone": "Section {title} content generation complete",
+    "sectionComplete": "Section {title} generation complete",
+    "reportComplete": "Report generation complete",
+    "errorOccurred": "Error occurred: {error}",
+    "agentInitDone": "ReportAgent initialized: graph_id={graphId}, simulation_id={simulationId}",
+    "executingTool": "Executing tool: {toolName}, params: {params}",
+    "toolExecFailed": "Tool execution failed: {toolName}, error: {error}",
+    "startPlanningOutline": "Starting report outline planning...",
+    "outlinePlanDone": "Outline planning complete: {count} sections",
+    "outlinePlanFailed": "Outline planning failed: {error}",
+    "reactGenerateSection": "ReACT generating section: {title}",
+    "sectionIterNone": "Section {title} iteration {iteration}: LLM returned None",
+    "sectionConflict": "Section {title} round {iteration}: LLM output both tool call and Final Answer (conflict #{conflictCount})",
+    "sectionConflictDowngrade": "Section {title}: {conflictCount} consecutive conflicts, downgrading to truncate and execute first tool call",
+    "sectionGenDone": "Section {title} generation complete (tool calls: {count})",
+    "multiToolOnlyFirst": "LLM attempted {total} tool calls, executing only the first: {toolName}",
+    "sectionNoPrefix": "Section {title} missing 'Final Answer:' prefix, adopting LLM output as final content (tool calls: {count})",
+    "sectionMaxIter": "Section {title} reached max iterations, forcing generation",
+    "sectionForceFailed": "Section {title} force-finish LLM returned None, using default error message",
+    "sectionGenFailedContent": "(This section failed to generate: LLM returned empty response, please retry later)",
+    "outlineSavedToFile": "Outline saved to file: {reportId}/outline.json",
+    "sectionSaved": "Section saved: {reportId}/section_{sectionNum}.md",
+    "reportGenDone": "Report generation complete: {reportId}",
+    "reportGenFailed": "Report generation failed: {error}",
+    "agentChat": "Report Agent chat: {message}...",
+    "fetchReportFailed": "Failed to fetch report content: {error}",
+    "outlineSaved": "Outline saved: {reportId}",
+    "sectionFileSaved": "Section saved: {reportId}/{fileSuffix}",
+    "fullReportAssembled": "Full report assembled: {reportId}",
+    "reportSaved": "Report saved: {reportId}",
+    "reportFolderDeleted": "Report folder deleted: {reportId}",
+    "redirectToQuickSearch": "search_graph redirected to quick_search",
+    "redirectToInsightForge": "get_simulation_context redirected to insight_forge"
+  },
+  "console": {
+    "zepToolsInitialized": "ZepToolsService initialized",
+    "zepRetryAttempt": "Zep {operation} attempt {attempt} failed: {error}, retrying in {delay}s...",
+    "zepAllRetriesFailed": "Zep {operation} failed after {retries} attempts: {error}",
+    "graphSearch": "Graph search: graph_id={graphId}, query={query}...",
+    "graphSearchOp": "Graph search (graph={graphId})",
+    "searchComplete": "Search complete: found {count} relevant facts",
+    "zepSearchApiFallback": "Zep Search API failed, falling back to local search: {error}",
+    "usingLocalSearch": "Using local search: query={query}...",
+    "localSearchComplete": "Local search complete: found {count} relevant facts",
+    "localSearchFailed": "Local search failed: {error}",
+    "fetchingAllNodes": "Fetching all nodes for graph {graphId}...",
+    "fetchedNodes": "Fetched {count} nodes",
+    "fetchingAllEdges": "Fetching all edges for graph {graphId}...",
+    "fetchedEdges": "Fetched {count} edges",
+    "fetchingNodeDetail": "Fetching node detail: {uuid}...",
+    "fetchNodeDetailOp": "Fetch node detail (uuid={uuid}...)",
+    "fetchNodeDetailFailed": "Failed to fetch node detail: {error}",
+    "fetchingNodeEdges": "Fetching edges for node {uuid}...",
+    "foundNodeEdges": "Found {count} edges related to node",
+    "fetchNodeEdgesFailed": "Failed to fetch node edges: {error}",
+    "fetchingEntitiesByType": "Fetching entities of type {type}...",
+    "foundEntitiesByType": "Found {count} entities of type {type}",
+    "fetchingEntitySummary": "Fetching relationship summary for entity {name}...",
+    "fetchingGraphStats": "Fetching statistics for graph {graphId}...",
+    "fetchingSimContext": "Fetching simulation context: {requirement}...",
+    "insightForgeStart": "InsightForge deep insight retrieval: {query}...",
+    "generatedSubQueries": "Generated {count} sub-queries",
+    "insightForgeComplete": "InsightForge complete: {facts} facts, {entities} entities, {relationships} relationships",
+    "generateSubQueriesFailed": "Failed to generate sub-queries: {error}, using defaults",
+    "panoramaSearchStart": "PanoramaSearch broad search: {query}...",
+    "panoramaSearchComplete": "PanoramaSearch complete: {active} active, {historical} historical",
+    "quickSearchStart": "QuickSearch simple search: {query}...",
+    "quickSearchComplete": "QuickSearch complete: {count} results",
+    "interviewAgentsStart": "InterviewAgents deep interview (real API): {requirement}...",
+    "profilesNotFound": "Profiles not found for simulation {simId}",
+    "loadedProfiles": "Loaded {count} agent profiles",
+    "selectedAgentsForInterview": "Selected {count} agents for interview: {indices}",
+    "generatedInterviewQuestions": "Generated {count} interview questions",
+    "callingBatchInterviewApi": "Calling batch interview API (dual platform): {count} agents",
+    "interviewApiReturned": "Interview API returned: {count} results, success={success}",
+    "interviewApiReturnedFailure": "Interview API returned failure: {error}",
+    "interviewApiCallFailed": "Interview API call failed (env not running?): {error}",
+    "interviewApiCallException": "Interview API call exception: {error}",
+    "interviewAgentsComplete": "InterviewAgents complete: interviewed {count} agents (dual platform)",
+    "loadedRedditProfiles": "Loaded {count} profiles from reddit_profiles.json",
+    "readRedditProfilesFailed": "Failed to read reddit_profiles.json: {error}",
+    "loadedTwitterProfiles": "Loaded {count} profiles from twitter_profiles.csv",
+    "readTwitterProfilesFailed": "Failed to read twitter_profiles.csv: {error}",
+    "llmSelectAgentFailed": "LLM agent selection failed, using default selection: {error}",
+    "generateInterviewQuestionsFailed": "Failed to generate interview questions: {error}",
+    "generateInterviewSummaryFailed": "Failed to generate interview summary: {error}"
   }
 }
diff --git a/locales/zh.json b/locales/zh.json
index 11e19c9..ff13ba5 100644
--- a/locales/zh.json
+++ b/locales/zh.json
@@ -210,7 +210,10 @@
   "step4": {
     "generatingSection": "正在生成{title}...",
     "goToInteraction": "进入深度互动",
-    "waitingForReportAgent": "Waiting for Report Agent..."
+    "waitingForReportAgent": "Waiting for Report Agent...",
+    "collapse": "收起 ▲",
+    "expandAll": "展开全部 {count} 条 ▼",
+    "expandAllEntities": "展开全部 {count} 个 ▼"
   },
   "step5": {
     "interactiveTools": "Interactive Tools",
@@ -527,5 +530,102 @@
     "enterStep": "进入 Step {step}: {name}",
     "returnToStep": "返回 Step {step}: {name}",
     "customSimRounds": "自定义模拟轮数: {rounds} 轮"
+  },
+  "report": {
+    "taskStarted": "报告生成任务开始",
+    "planningStart": "开始规划报告大纲",
+    "fetchSimContext": "获取模拟上下文信息",
+    "planningComplete": "大纲规划完成",
+    "sectionStart": "开始生成章节: {title}",
+    "reactThought": "ReACT 第{iteration}轮思考",
+    "toolCall": "调用工具: {toolName}",
+    "toolResult": "工具 {toolName} 返回结果",
+    "llmResponse": "LLM 响应 (工具调用: {hasToolCalls}, 最终答案: {hasFinalAnswer})",
+    "sectionContentDone": "章节 {title} 内容生成完成",
+    "sectionComplete": "章节 {title} 生成完成",
+    "reportComplete": "报告生成完成",
+    "errorOccurred": "发生错误: {error}",
+    "agentInitDone": "ReportAgent 初始化完成: graph_id={graphId}, simulation_id={simulationId}",
+    "executingTool": "执行工具: {toolName}, 参数: {params}",
+    "toolExecFailed": "工具执行失败: {toolName}, 错误: {error}",
+    "startPlanningOutline": "开始规划报告大纲...",
+    "outlinePlanDone": "大纲规划完成: {count} 个章节",
+    "outlinePlanFailed": "大纲规划失败: {error}",
+    "reactGenerateSection": "ReACT生成章节: {title}",
+    "sectionIterNone": "章节 {title} 第 {iteration} 次迭代: LLM 返回 None",
+    "sectionConflict": "章节 {title} 第 {iteration} 轮: LLM 同时输出工具调用和 Final Answer（第 {conflictCount} 次冲突）",
+    "sectionConflictDowngrade": "章节 {title}: 连续 {conflictCount} 次冲突，降级为截断执行第一个工具调用",
+    "sectionGenDone": "章节 {title} 生成完成（工具调用: {count}次）",
+    "multiToolOnlyFirst": "LLM 尝试调用 {total} 个工具，只执行第一个: {toolName}",
+    "sectionNoPrefix": "章节 {title} 未检测到 'Final Answer:' 前缀，直接采纳LLM输出作为最终内容（工具调用: {count}次）",
+    "sectionMaxIter": "章节 {title} 达到最大迭代次数，强制生成",
+    "sectionForceFailed": "章节 {title} 强制收尾时 LLM 返回 None，使用默认错误提示",
+    "sectionGenFailedContent": "（本章节生成失败：LLM 返回空响应，请稍后重试）",
+    "outlineSavedToFile": "大纲已保存到文件: {reportId}/outline.json",
+    "sectionSaved": "章节已保存: {reportId}/section_{sectionNum}.md",
+    "reportGenDone": "报告生成完成: {reportId}",
+    "reportGenFailed": "报告生成失败: {error}",
+    "agentChat": "Report Agent对话: {message}...",
+    "fetchReportFailed": "获取报告内容失败: {error}",
+    "outlineSaved": "大纲已保存: {reportId}",
+    "sectionFileSaved": "章节已保存: {reportId}/{fileSuffix}",
+    "fullReportAssembled": "完整报告已组装: {reportId}",
+    "reportSaved": "报告已保存: {reportId}",
+    "reportFolderDeleted": "报告文件夹已删除: {reportId}",
+    "redirectToQuickSearch": "search_graph 已重定向到 quick_search",
+    "redirectToInsightForge": "get_simulation_context 已重定向到 insight_forge"
+  },
+  "console": {
+    "zepToolsInitialized": "ZepToolsService 初始化完成",
+    "zepRetryAttempt": "Zep {operation} 第 {attempt} 次尝试失败: {error}, {delay}秒后重试...",
+    "zepAllRetriesFailed": "Zep {operation} 在 {retries} 次尝试后仍失败: {error}",
+    "graphSearch": "图谱搜索: graph_id={graphId}, query={query}...",
+    "graphSearchOp": "图谱搜索(graph={graphId})",
+    "searchComplete": "搜索完成: 找到 {count} 条相关事实",
+    "zepSearchApiFallback": "Zep Search API失败，降级为本地搜索: {error}",
+    "usingLocalSearch": "使用本地搜索: query={query}...",
+    "localSearchComplete": "本地搜索完成: 找到 {count} 条相关事实",
+    "localSearchFailed": "本地搜索失败: {error}",
+    "fetchingAllNodes": "获取图谱 {graphId} 的所有节点...",
+    "fetchedNodes": "获取到 {count} 个节点",
+    "fetchingAllEdges": "获取图谱 {graphId} 的所有边...",
+    "fetchedEdges": "获取到 {count} 条边",
+    "fetchingNodeDetail": "获取节点详情: {uuid}...",
+    "fetchNodeDetailOp": "获取节点详情(uuid={uuid}...)",
+    "fetchNodeDetailFailed": "获取节点详情失败: {error}",
+    "fetchingNodeEdges": "获取节点 {uuid}... 的相关边",
+    "foundNodeEdges": "找到 {count} 条与节点相关的边",
+    "fetchNodeEdgesFailed": "获取节点边失败: {error}",
+    "fetchingEntitiesByType": "获取类型为 {type} 的实体...",
+    "foundEntitiesByType": "找到 {count} 个 {type} 类型的实体",
+    "fetchingEntitySummary": "获取实体 {name} 的关系摘要...",
+    "fetchingGraphStats": "获取图谱 {graphId} 的统计信息...",
+    "fetchingSimContext": "获取模拟上下文: {requirement}...",
+    "insightForgeStart": "InsightForge 深度洞察检索: {query}...",
+    "generatedSubQueries": "生成 {count} 个子问题",
+    "insightForgeComplete": "InsightForge完成: {facts}条事实, {entities}个实体, {relationships}条关系",
+    "generateSubQueriesFailed": "生成子问题失败: {error}，使用默认子问题",
+    "panoramaSearchStart": "PanoramaSearch 广度搜索: {query}...",
+    "panoramaSearchComplete": "PanoramaSearch完成: {active}条有效, {historical}条历史",
+    "quickSearchStart": "QuickSearch 简单搜索: {query}...",
+    "quickSearchComplete": "QuickSearch完成: {count}条结果",
+    "interviewAgentsStart": "InterviewAgents 深度采访（真实API）: {requirement}...",
+    "profilesNotFound": "未找到模拟 {simId} 的人设文件",
+    "loadedProfiles": "加载到 {count} 个Agent人设",
+    "selectedAgentsForInterview": "选择了 {count} 个Agent进行采访: {indices}",
+    "generatedInterviewQuestions": "生成了 {count} 个采访问题",
+    "callingBatchInterviewApi": "调用批量采访API（双平台）: {count} 个Agent",
+    "interviewApiReturned": "采访API返回: {count} 个结果, success={success}",
+    "interviewApiReturnedFailure": "采访API返回失败: {error}",
+    "interviewApiCallFailed": "采访API调用失败（环境未运行？）: {error}",
+    "interviewApiCallException": "采访API调用异常: {error}",
+    "interviewAgentsComplete": "InterviewAgents完成: 采访了 {count} 个Agent（双平台）",
+    "loadedRedditProfiles": "从 reddit_profiles.json 加载了 {count} 个人设",
+    "readRedditProfilesFailed": "读取 reddit_profiles.json 失败: {error}",
+    "loadedTwitterProfiles": "从 twitter_profiles.csv 加载了 {count} 个人设",
+    "readTwitterProfilesFailed": "读取 twitter_profiles.csv 失败: {error}",
+    "llmSelectAgentFailed": "LLM选择Agent失败，使用默认选择: {error}",
+    "generateInterviewQuestionsFailed": "生成采访问题失败: {error}",
+    "generateInterviewSummaryFailed": "生成采访摘要失败: {error}"
   }
 }