diff --git a/RuoYi-Vue/easycode-web/src/views/DiagramCenterView.vue b/RuoYi-Vue/easycode-web/src/views/DiagramCenterView.vue
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@@ -0,0 +1,1778 @@
+<template>
+  <section class="page diagram-center-page">
+    <div class="panel">
+      <div class="panel-header">
+        <div>
+          <h1 class="panel-title">图表中心</h1>
+          <p class="muted">{{ project.projectName || '项目' }} 的 ER 图、功能模块图、架构图和 AI 图表。</p>
+        </div>
+        <div class="toolbar">
+          <el-button @click="router.push('/projects')">返回项目</el-button>
+          <el-button type="primary" @click="router.push({ path: '/generate', query: { projectId, mode: 'expert' } })">编辑项目</el-button>
+        </div>
+      </div>
+
+      <div class="diagram-layout" v-loading="loading">
+        <aside class="diagram-sidebar">
+          <el-radio-group v-model="activeDiagram" class="diagram-kind-list">
+            <el-radio-button label="er">ER 图</el-radio-button>
+            <el-radio-button label="module">功能模块图</el-radio-button>
+            <el-radio-button label="architecture">系统架构图</el-radio-button>
+            <el-radio-button label="flowchart">流程图</el-radio-button>
+            <el-radio-button label="three_line_table">三线表</el-radio-button>
+            <el-radio-button label="overview">项目总览图</el-radio-button>
+            <el-radio-button label="ai">AI 生成图</el-radio-button>
+          </el-radio-group>
+
+          <div class="sidebar-actions">
+            <el-button type="primary" :loading="savingDiagram" @click="saveCurrentDiagram">保存当前图表</el-button>
+          </div>
+
+          <div v-if="savedDiagrams.length" class="saved-list">
+            <strong>已保存图表</strong>
+            <button
+              v-for="diagram in savedDiagrams"
+              :key="diagram.diagramId"
+              type="button"
+              class="saved-item"
+              @click="loadSavedDiagram(diagram)"
+            >
+              <span>{{ diagram.title || diagram.diagramType }}</span>
+              <small>{{ diagram.diagramType }} · v{{ diagram.version || 1 }}</small>
+            </button>
+          </div>
+
+          <div v-if="activeDiagram === 'ai'" class="ai-form">
+            <el-form :model="aiForm" label-position="top">
+              <el-form-item label="图表类型">
+                <el-select v-model="aiForm.diagramType">
+                  <el-option label="业务流程图" value="flowchart" />
+                  <el-option label="用例图" value="use_case" />
+                  <el-option label="数据流图" value="data_flow" />
+                  <el-option label="活动图" value="activity" />
+                  <el-option label="状态图" value="state" />
+                  <el-option label="架构图" value="architecture" />
+                </el-select>
+              </el-form-item>
+              <el-form-item label="标题">
+                <el-input v-model="aiForm.title" placeholder="例如：用户借阅业务流程图" />
+              </el-form-item>
+              <el-form-item label="补充要求">
+                <el-input
+                  v-model="aiForm.prompt"
+                  type="textarea"
+                  :rows="5"
+                  placeholder="描述你想画的流程、角色、状态或模块"
+                />
+              </el-form-item>
+              <el-button type="primary" :loading="generatingAiDiagram" @click="handleGenerateAiDiagram">生成图表</el-button>
+            </el-form>
+          </div>
+        </aside>
+
+        <main class="diagram-main">
+          <ErDiagramView
+            v-if="activeDiagram === 'er'"
+            v-model:draft="erDraft"
+            :tables="database.tables"
+            :project-id="projectId"
+          />
+
+          <AppModuleDiagramView
+            v-else-if="activeDiagram === 'module'"
+            v-model:source-mode="moduleDiagramSourceMode"
+            v-model:outline-text="moduleDiagramOutlineText"
+            v-model:layout-options="moduleDiagramLayoutOptions"
+            :blueprint="appBlueprint"
+            :project-name="project.projectName"
+            :editable="true"
+          />
+
+          <section v-else-if="activeDiagram === 'architecture'" class="architecture-editor">
+            <div class="architecture-toolbar">
+              <div>
+                <strong>{{ architectureDiagram.title }}</strong>
+                <span>{{ architectureStatsText }}</span>
+              </div>
+              <div class="toolbar">
+                <el-checkbox v-model="architectureBlackWhite">黑白模式</el-checkbox>
+                <el-button :icon="Download" @click="downloadArchitectureSvg">SVG</el-button>
+                <el-button :icon="Picture" @click="downloadArchitecturePng">PNG</el-button>
+              </div>
+            </div>
+
+            <div class="architecture-workbench">
+              <aside class="architecture-dsl-panel">
+                <div class="architecture-dsl-header">
+                  <div>
+                    <strong>架构图 DSL</strong>
+                    <span>顶格为层名，缩进 2 空格为组件，缩进 4 空格为说明。</span>
+                  </div>
+                  <div class="architecture-dsl-actions">
+                    <el-button :icon="Delete" text @click="clearArchitectureDsl">清空</el-button>
+                    <el-button :icon="DocumentCopy" text @click="loadArchitectureExample">加载示例</el-button>
+                    <el-button :icon="Refresh" text @click="regenerateArchitectureDsl">换一换</el-button>
+                  </div>
+                </div>
+
+                <div class="architecture-grammar">
+                  层名可写成“表现层 - Vue 3 前端”；名为“横切关注点”的层会自动渲染到右侧侧栏。
+                </div>
+
+                <el-input
+                  v-model="architectureDsl"
+                  class="architecture-dsl-input"
+                  type="textarea"
+                  resize="none"
+                  :autosize="{ minRows: 26, maxRows: 38 }"
+                  spellcheck="false"
+                />
+
+                <div class="architecture-dsl-footer">
+                  <span v-if="parsedArchitecture.errors.length">{{ parsedArchitecture.errors.length }} 条格式提示</span>
+                  <span v-else>DSL 已就绪</span>
+                  <el-button type="primary" :icon="MagicStick" @click="refreshArchitecturePreview">生成预览</el-button>
+                </div>
+              </aside>
+
+              <section class="architecture-preview-panel">
+                <div v-if="parsedArchitecture.errors.length" class="architecture-errors">
+                  <span v-for="error in parsedArchitecture.errors.slice(0, 2)" :key="error">{{ error }}</span>
+                </div>
+
+                <div class="architecture-preview-scroll">
+                  <svg
+                    ref="architectureSvgRef"
+                    class="architecture-svg"
+                    :viewBox="`0 0 ${architectureDiagram.canvas.width} ${architectureDiagram.canvas.height}`"
+                    :style="{ width: `${architectureDiagram.canvas.width}px`, height: `${architectureDiagram.canvas.height}px` }"
+                  >
+                    <defs>
+                      <marker id="architecture-arrow-preview" markerWidth="9" markerHeight="9" refX="7" refY="3" orient="auto">
+                        <path d="M0,0 L0,6 L8,3 z" fill="#475569" />
+                      </marker>
+                    </defs>
+                    <rect width="100%" height="100%" fill="#ffffff" />
+                    <text class="architecture-svg-title" :x="architectureDiagram.canvas.width / 2" y="24">
+                      {{ architectureDiagram.title }}
+                    </text>
+
+                    <path
+                      v-for="arrow in architectureDiagram.arrows"
+                      :key="arrow.id"
+                      class="architecture-arrow"
+                      :d="architectureArrowPath(arrow)"
+                      marker-end="url(#architecture-arrow-preview)"
+                    />
+
+                    <g v-for="layer in architectureDiagram.layers" :key="layer.id" class="architecture-layer">
+                      <rect
+                        :x="layer.x"
+                        :y="layer.y"
+                        :width="layer.width"
+                        :height="layer.height"
+                        rx="8"
+                        :fill="layer.palette.fill"
+                        :stroke="layer.palette.stroke"
+                        stroke-width="1.4"
+                      />
+                      <text class="architecture-layer-title" :x="layer.x + 14" :y="layer.y + 22" :fill="layer.palette.title">
+                        {{ layer.title }}
+                      </text>
+                      <text v-if="layer.subtitle" class="architecture-layer-subtitle" :x="architectureLayerSubtitleX(layer)" :y="layer.y + 22">
+                        {{ layer.subtitle }}
+                      </text>
+
+                      <g v-for="component in layer.components" :key="component.id" class="architecture-component">
+                        <rect
+                          :x="component.x"
+                          :y="component.y"
+                          :width="component.width"
+                          :height="component.height"
+                          rx="6"
+                          :fill="layer.palette.componentFill"
+                          :stroke="layer.palette.componentStroke"
+                        />
+                        <text class="architecture-component-title" :x="component.x + component.width / 2" :y="component.y + 21">
+                          {{ shortText(component.title, 14) }}
+                        </text>
+                        <text
+                          v-for="(detail, detailIndex) in componentDetailLines(component)"
+                          :key="`${component.id}-${detailIndex}`"
+                          class="architecture-detail"
+                          :x="component.x + component.width / 2"
+                          :y="component.y + 40 + detailIndex * 14"
+                        >
+                          {{ shortText(detail, 15) }}
+                        </text>
+                      </g>
+                    </g>
+
+                    <g class="architecture-concerns">
+                      <rect
+                        :x="architectureDiagram.concernPanel.x"
+                        :y="architectureDiagram.concernPanel.y"
+                        :width="architectureDiagram.concernPanel.width"
+                        :height="architectureDiagram.concernPanel.height"
+                        rx="8"
+                        :fill="architectureDiagram.concernPanel.palette.fill"
+                        :stroke="architectureDiagram.concernPanel.palette.stroke"
+                        stroke-width="1.4"
+                      />
+                      <text
+                        class="architecture-concern-heading"
+                        :x="architectureDiagram.concernPanel.x + 14"
+                        :y="architectureDiagram.concernPanel.y + 24"
+                        :fill="architectureDiagram.concernPanel.palette.title"
+                      >
+                        横切关注点
+                      </text>
+                      <g v-for="concern in architectureDiagram.concerns" :key="concern.id" class="architecture-concern">
+                        <rect
+                          :x="concern.x"
+                          :y="concern.y"
+                          :width="concern.width"
+                          :height="concern.height"
+                          rx="6"
+                          fill="#ffffff"
+                          :stroke="architectureDiagram.concernPanel.palette.stroke"
+                        />
+                        <text class="architecture-concern-title" :x="concern.x + concern.width / 2" :y="concern.y + 22">
+                          {{ shortText(concern.title, 12) }}
+                        </text>
+                        <text
+                          v-for="(detail, detailIndex) in componentDetailLines(concern)"
+                          :key="`${concern.id}-${detailIndex}`"
+                          class="architecture-detail"
+                          :x="concern.x + concern.width / 2"
+                          :y="concern.y + 41 + detailIndex * 14"
+                        >
+                          {{ shortText(detail, 12) }}
+                        </text>
+                      </g>
+                    </g>
+                  </svg>
+                </div>
+              </section>
+            </div>
+          </section>
+
+          <section v-else-if="activeDiagram === 'flowchart'" class="flowchart-editor">
+            <div class="flowchart-toolbar">
+              <div>
+                <strong>{{ flowchartDiagram.title }}</strong>
+                <span>{{ flowchartStatsText }}</span>
+              </div>
+              <div class="toolbar">
+                <el-button :icon="Download" :disabled="!flowchartDiagram.nodes.length" @click="downloadFlowchartSvg">SVG</el-button>
+                <el-button :icon="Picture" :disabled="!flowchartDiagram.nodes.length" @click="downloadFlowchartPng">PNG</el-button>
+              </div>
+            </div>
+
+            <div class="flowchart-workbench">
+              <aside class="flowchart-dsl-panel">
+                <div class="flowchart-dsl-header">
+                  <div>
+                    <strong>流程图 DSL</strong>
+                    <span>使用“序号-类型-文本”描述节点，判断节点下缩进写“是-目标序号”“否-目标序号”。</span>
+                  </div>
+                  <div class="flowchart-dsl-actions">
+                    <el-button :icon="Delete" text @click="clearFlowchartDsl">清空</el-button>
+                    <el-button :icon="DocumentCopy" text @click="loadFlowchartExample">加载示例</el-button>
+                    <el-button :icon="Refresh" text @click="regenerateFlowchartDsl">换一换</el-button>
+                  </div>
+                </div>
+
+                <div class="flowchart-grammar">
+                  类型支持：开始 / 结束 / 处理 / 判断 / 输入 / 输出 / 异常。普通节点自动连接下一节点；判断节点使用分支目标连接。
+                </div>
+
+                <el-input
+                  v-model="flowchartDsl"
+                  class="flowchart-dsl-input"
+                  type="textarea"
+                  resize="none"
+                  :autosize="{ minRows: 20, maxRows: 34 }"
+                  spellcheck="false"
+                />
+
+                <div class="flowchart-dsl-footer">
+                  <span v-if="parsedFlowchart.errors.length">{{ parsedFlowchart.errors.length }} 条格式提示</span>
+                  <span v-else>DSL 已就绪</span>
+                  <el-button type="primary" :icon="MagicStick" @click="refreshFlowchartPreview">生成预览</el-button>
+                </div>
+              </aside>
+
+              <section class="flowchart-preview-panel">
+                <div v-if="parsedFlowchart.errors.length" class="flowchart-errors">
+                  <span v-for="error in parsedFlowchart.errors.slice(0, 3)" :key="error">{{ error }}</span>
+                </div>
+
+                <div class="flowchart-preview-scroll">
+                  <svg
+                    class="flowchart-svg"
+                    :viewBox="`0 0 ${flowchartDiagram.canvas.width} ${flowchartDiagram.canvas.height}`"
+                    :style="{ width: `${flowchartDiagram.canvas.width}px`, height: `${flowchartDiagram.canvas.height}px` }"
+                  >
+                    <defs>
+                      <marker id="flowchart-arrow-preview" markerWidth="9" markerHeight="9" refX="7" refY="3" orient="auto">
+                        <path d="M0,0 L0,6 L8,3 z" fill="#222222" />
+                      </marker>
+                    </defs>
+                    <rect width="100%" height="100%" fill="#ffffff" />
+                    <text class="flowchart-svg-title" :x="flowchartDiagram.canvas.width / 2" y="30">
+                      {{ flowchartDiagram.title }}
+                    </text>
+
+                    <g class="flowchart-edge-layer">
+                      <path
+                        v-for="edge in flowchartDiagram.edges"
+                        :key="edge.id"
+                        class="flowchart-edge"
+                        :d="edge.path"
+                        marker-end="url(#flowchart-arrow-preview)"
+                      />
+                      <text
+                        v-for="edge in flowchartLabeledEdges"
+                        :key="`${edge.id}-label`"
+                        class="flowchart-edge-label"
+                        :x="edge.labelX"
+                        :y="edge.labelY"
+                      >
+                        {{ edge.label }}
+                      </text>
+                    </g>
+
+                    <g class="flowchart-node-layer">
+                      <g v-for="node in flowchartDiagram.nodes" :key="node.id" class="flowchart-node">
+                        <polygon
+                          v-if="node.shape === 'diamond'"
+                          class="flowchart-node-shape"
+                          :points="flowchartDiamondPoints(node)"
+                        />
+                        <polygon
+                          v-else-if="node.shape === 'parallelogram'"
+                          class="flowchart-node-shape"
+                          :points="flowchartParallelogramPoints(node)"
+                        />
+                        <rect
+                          v-else
+                          class="flowchart-node-shape"
+                          :x="node.x"
+                          :y="node.y"
+                          :width="node.width"
+                          :height="node.height"
+                          :rx="node.shape === 'terminator' ? node.height / 2 : 3"
+                        />
+                        <text
+                          v-for="(line, lineIndex) in node.lines"
+                          :key="`${node.id}-${lineIndex}`"
+                          class="flowchart-node-text"
+                          :x="node.x + node.width / 2"
+                          :y="flowchartTextY(node, lineIndex)"
+                        >
+                          {{ line }}
+                        </text>
+                      </g>
+                    </g>
+                  </svg>
+                </div>
+              </section>
+            </div>
+          </section>
+
+          <ThreeLineTableView
+            v-else-if="activeDiagram === 'three_line_table'"
+            v-model:draft="threeLineDraft"
+            :tables="database.tables"
+            :project-name="project.projectName"
+          />
+
+          <section v-else class="custom-diagram-panel">
+            <div class="custom-toolbar">
+              <div>
+                <strong>{{ currentGraph.title }}</strong>
+                <span>{{ currentGraph.description }}</span>
+              </div>
+              <div class="toolbar">
+                <el-button :icon="Download" :disabled="!currentGraph.nodes.length" @click="downloadCurrentSvg">SVG</el-button>
+                <el-button :icon="Picture" :disabled="!currentGraph.nodes.length" @click="downloadCurrentPng">PNG</el-button>
+              </div>
+            </div>
+
+            <div class="graph-scroll">
+              <svg
+                ref="graphSvgRef"
+                class="graph-canvas"
+                :viewBox="`0 0 ${currentGraph.canvas.width} ${currentGraph.canvas.height}`"
+                :style="{ width: `${currentGraph.canvas.width}px`, height: `${currentGraph.canvas.height}px` }"
+              >
+                <defs>
+                  <marker id="diagram-arrow" markerWidth="10" markerHeight="10" refX="8" refY="3" orient="auto">
+                    <path d="M0,0 L0,6 L8,3 z" fill="#55708f" />
+                  </marker>
+                </defs>
+                <rect width="100%" height="100%" fill="#ffffff" />
+                <g>
+                  <path
+                    v-for="edge in graphEdges"
+                    :key="edge.key"
+                    class="diagram-edge"
+                    :d="edge.path"
+                    marker-end="url(#diagram-arrow)"
+                  />
+                  <text
+                    v-for="edge in graphEdges"
+                    :key="`${edge.key}-label`"
+                    class="diagram-edge-label"
+                    :x="edge.labelX"
+                    :y="edge.labelY"
+                  >
+                    {{ edge.label }}
+                  </text>
+                </g>
+                <g>
+                  <g
+                    v-for="node in currentGraph.nodes"
+                    :key="node.id"
+                    class="diagram-node"
+                    :transform="`translate(${node.x}, ${node.y})`"
+                  >
+                    <rect :width="node.width" :height="node.height" rx="8" />
+                    <text class="diagram-node-title" :x="node.width / 2" :y="node.height / 2 - 3">
+                      {{ shortText(node.label, 16) }}
+                    </text>
+                    <text v-if="node.lane" class="diagram-node-lane" :x="node.width / 2" :y="node.height - 12">
+                      {{ shortText(node.lane, 14) }}
+                    </text>
+                  </g>
+                </g>
+              </svg>
+            </div>
+
+            <el-collapse v-if="activeDiagram === 'ai' && aiDiagram.mermaid" class="diagram-code">
+              <el-collapse-item title="Mermaid / 文字说明" name="mermaid">
+                <el-input v-model="aiDiagram.mermaid" type="textarea" :rows="8" />
+                <el-input v-model="aiDiagram.markdown" class="diagram-markdown" type="textarea" :rows="8" />
+              </el-collapse-item>
+            </el-collapse>
+          </section>
+        </main>
+      </div>
+    </div>
+  </section>
+</template>
+
+<script setup>
+import { computed, onMounted, reactive, ref } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { ElMessage } from 'element-plus'
+import { Delete, DocumentCopy, Download, MagicStick, Picture, Refresh } from '@element-plus/icons-vue'
+import AppModuleDiagramView from '@/components/AppModuleDiagramView.vue'
+import ErDiagramView from '@/components/ErDiagramView.vue'
+import ThreeLineTableView from '@/components/ThreeLineTableView.vue'
+import { generateDiagram, getDatabase, getProject, listProjectDiagrams, saveProjectDiagram } from '@/api/project'
+import {
+  ARCHITECTURE_EXAMPLE_DSL,
+  buildArchitectureDiagram,
+  buildArchitectureExportSvg,
+  buildDefaultArchitectureDsl,
+  parseArchitectureDsl
+} from '@/utils/architectureDiagram'
+import {
+  FLOWCHART_EXAMPLE_DSL,
+  buildDefaultFlowchartDsl,
+  buildFlowchartDiagram,
+  buildFlowchartExportSvg,
+  parseFlowchartDsl
+} from '@/utils/flowchartDiagram'
+import { buildAppModuleGraph } from '@/utils/appModuleGraph'
+import { blueprintToModuleOutline, moduleOutlineToText, parseModuleOutlineText } from '@/utils/appModuleOutline'
+import { saveBlob } from '@/utils/download'
+
+const route = useRoute()
+const router = useRouter()
+const projectId = computed(() => route.params.projectId)
+const loading = ref(false)
+const savingDiagram = ref(false)
+const generatingAiDiagram = ref(false)
+const activeDiagram = ref('er')
+const project = reactive({})
+const database = ref({ tables: [], erDiagram: {} })
+const erDraft = ref({ positions: {}, relations: [], deletedEdgeIds: [] })
+const threeLineDraft = ref({})
+const graphSvgRef = ref(null)
+const architectureSvgRef = ref(null)
+const architectureDsl = ref('')
+const architectureBlackWhite = ref(false)
+const flowchartDsl = ref('')
+const savedDiagrams = ref([])
+const moduleDiagramSourceMode = ref('blueprint')
+const moduleDiagramOutlineText = ref('')
+const moduleDiagramLayoutOptions = ref({ density: 'standard', direction: 'horizontal', fontSize: 'standard' })
+const aiDiagram = ref({ nodes: [], edges: [], title: 'AI 图表', description: '', mermaid: '', markdown: '' })
+const aiForm = reactive({
+  diagramType: 'flowchart',
+  title: '',
+  prompt: ''
+})
+const AI_DIAGRAM_TYPES = new Set(['use_case', 'sequence', 'activity', 'state', 'data_flow'])
+
+const appBlueprint = computed(() => parseJson(project.appBlueprint, { roles: [], frontendMenus: [], adminMenus: [] }))
+const moduleDiagramGraph = computed(() => {
+  const text = moduleDiagramSourceMode.value === 'outline'
+    ? moduleDiagramOutlineText.value
+    : defaultModuleOutlineText()
+  return buildAppModuleGraph(parseModuleOutlineText(text).outline, moduleDiagramLayoutOptions.value)
+})
+const parsedArchitecture = computed(() => parseArchitectureDsl(architectureDsl.value))
+const architectureDiagram = computed(() => buildArchitectureDiagram(parsedArchitecture.value, {
+  blackWhite: architectureBlackWhite.value,
+  title: `${project.projectName || '项目'}系统架构图`
+}))
+const architectureStatsText = computed(() => {
+  const stats = architectureDiagram.value.stats
+  return `${stats.layerCount} 层 · ${stats.totalComponentCount} 组件`
+})
+const parsedFlowchart = computed(() => parseFlowchartDsl(flowchartDsl.value))
+const flowchartDiagram = computed(() => buildFlowchartDiagram(parsedFlowchart.value, {
+  title: `${project.projectName || '项目'}流程图`
+}))
+const flowchartStatsText = computed(() => {
+  const stats = flowchartDiagram.value.stats
+  return `${stats.nodeCount} 节点 · ${stats.edgeCount} 连线`
+})
+const flowchartLabeledEdges = computed(() => flowchartDiagram.value.edges.filter((edge) => edge.label))
+
+const currentGraph = computed(() => {
+  if (activeDiagram.value === 'ai') {
+    return normalizeGraph(aiDiagram.value, 'AI 图表')
+  }
+  if (activeDiagram.value === 'overview') {
+    return buildOverviewGraph()
+  }
+  return buildArchitectureGraph()
+})
+
+const graphEdges = computed(() => {
+  const nodeMap = new Map(currentGraph.value.nodes.map((node) => [node.id, node]))
+  return currentGraph.value.edges.map((edge, index) => {
+    const source = nodeMap.get(edge.source)
+    const target = nodeMap.get(edge.target)
+    if (!source || !target) return null
+    const sx = source.x + source.width
+    const sy = source.y + source.height / 2
+    const tx = target.x
+    const ty = target.y + target.height / 2
+    const midX = (sx + tx) / 2
+    return {
+      key: `${edge.source}-${edge.target}-${index}`,
+      label: edge.label || '',
+      labelX: midX,
+      labelY: (sy + ty) / 2 - 8,
+      path: `M ${sx} ${sy} C ${midX} ${sy}, ${midX} ${ty}, ${tx} ${ty}`
+    }
+  }).filter(Boolean)
+})
+
+function parseJson(value, fallback) {
+  if (!value) return fallback
+  if (typeof value === 'object') return value
+  try {
+    return JSON.parse(value)
+  } catch (error) {
+    return fallback
+  }
+}
+
+function shortText(value, maxLength) {
+  const text = String(value || '')
+  return text.length > maxLength ? `${text.slice(0, maxLength - 1)}…` : text
+}
+
+function componentDetailLines(component) {
+  return Array.isArray(component?.details) ? component.details.slice(0, 3) : []
+}
+
+function architectureArrowPath(arrow) {
+  return `M ${arrow.x1} ${arrow.y1 + 4} L ${arrow.x2} ${arrow.y2 - 7}`
+}
+
+function architectureLayerSubtitleX(layer) {
+  return layer.x + 14 + String(layer.title || '').length * 14 + 12
+}
+
+function flowchartDiamondPoints(node) {
+  const centerX = node.x + node.width / 2
+  const centerY = node.y + node.height / 2
+  return `${centerX},${node.y} ${node.x + node.width},${centerY} ${centerX},${node.y + node.height} ${node.x},${centerY}`
+}
+
+function flowchartParallelogramPoints(node) {
+  const offset = 14
+  return `${node.x + offset},${node.y} ${node.x + node.width},${node.y} ${node.x + node.width - offset},${node.y + node.height} ${node.x},${node.y + node.height}`
+}
+
+function flowchartTextY(node, lineIndex) {
+  const lines = Array.isArray(node.lines) ? node.lines : []
+  return node.y + node.height / 2 - ((lines.length - 1) * 8) + lineIndex * 17
+}
+
+function normalizeGraph(source, fallbackTitle) {
+  const nodes = Array.isArray(source?.nodes) ? source.nodes : []
+  const positionedNodes = nodes.map((node, index) => ({
+    id: String(node.id || `node_${index + 1}`).replace(/[^a-zA-Z0-9_:-]/g, '_'),
+    label: node.label || node.id || `节点${index + 1}`,
+    lane: node.lane || node.type || '',
+    width: 158,
+    height: 68,
+    x: 56 + (index % 3) * 250,
+    y: 76 + Math.floor(index / 3) * 132
+  }))
+  const rows = Math.max(1, Math.ceil(positionedNodes.length / 3))
+  return {
+    title: source?.title || fallbackTitle,
+    description: source?.description || '可导出为 SVG 或 PNG。',
+    nodes: positionedNodes,
+    edges: Array.isArray(source?.edges) ? source.edges : [],
+    canvas: {
+      width: Math.max(860, Math.min(1200, 112 + Math.min(3, Math.max(positionedNodes.length, 1)) * 250)),
+      height: Math.max(440, 96 + rows * 132)
+    }
+  }
+}
+
+function buildArchitectureGraph() {
+  return normalizeGraph({
+    title: '系统架构图',
+    description: '根据项目技术栈自动生成，可作为论文系统设计章节素材。',
+    nodes: [
+      { id: 'browser', label: '浏览器用户', lane: '访问入口' },
+      { id: 'easycode_web', label: project.frontFramework || 'Vue 前端', lane: '前台工作台' },
+      { id: 'admin_ui', label: '后台管理端', lane: '管理入口' },
+      { id: 'gateway', label: 'Spring Boot 接口', lane: project.backFramework || '后端服务' },
+      { id: 'generator', label: '代码生成服务', lane: '业务生成' },
+      { id: 'ai', label: 'AI 生成服务', lane: '图表/论文' },
+      { id: 'mysql', label: 'MySQL 数据库', lane: `${database.value.tables.length || 0} 张业务表` },
+      { id: 'redis', label: 'Redis 缓存', lane: '会话/任务' }
+    ],
+    edges: [
+      { source: 'browser', target: 'easycode_web', label: '使用' },
+      { source: 'browser', target: 'admin_ui', label: '管理' },
+      { source: 'easycode_web', target: 'gateway', label: 'REST API' },
+      { source: 'admin_ui', target: 'gateway', label: 'REST API' },
+      { source: 'gateway', target: 'generator', label: '生成' },
+      { source: 'gateway', target: 'ai', label: '调用' },
+      { source: 'generator', target: 'mysql', label: '读写' },
+      { source: 'gateway', target: 'redis', label: '缓存' }
+    ]
+  }, '系统架构图')
+}
+
+function buildOverviewGraph() {
+  const tableNodes = database.value.tables.slice(0, 8).map((table) => ({
+    id: `table_${table.tableName}`,
+    label: table.tableComment || table.tableName,
+    lane: table.tableName
+  }))
+  return normalizeGraph({
+    title: '项目总览图',
+    description: '汇总项目、模块、数据库和预览生成链路。',
+    nodes: [
+      { id: 'project', label: project.projectName || '项目草稿', lane: '需求' },
+      { id: 'blueprint', label: '系统模块设计', lane: '蓝图' },
+      { id: 'loop', label: '业务闭环设计', lane: '流程' },
+      { id: 'database', label: '数据库设计', lane: `${database.value.tables.length || 0} 张表` },
+      { id: 'preview', label: '源码预览/下载', lane: '交付' },
+      ...tableNodes
+    ],
+    edges: [
+      { source: 'project', target: 'blueprint', label: '规划' },
+      { source: 'blueprint', target: 'loop', label: '闭环' },
+      { source: 'loop', target: 'database', label: '落表' },
+      { source: 'database', target: 'preview', label: '生成' },
+      ...tableNodes.map((node) => ({ source: 'database', target: node.id, label: '包含' }))
+    ]
+  }, '项目总览图')
+}
+
+async function loadData() {
+  if (!projectId.value) return
+  loading.value = true
+  try {
+    const [projectResult, databaseResult, diagramsResult] = await Promise.all([
+      getProject(projectId.value),
+      getDatabase(projectId.value),
+      listProjectDiagrams(projectId.value)
+    ])
+    Object.assign(project, projectResult || {})
+    database.value = normalizeDatabase(databaseResult)
+    savedDiagrams.value = Array.isArray(diagramsResult) ? diagramsResult : []
+    applySavedDrafts()
+    aiForm.title = `${project.projectName || '项目'}业务流程图`
+  } catch (error) {
+    ElMessage.error(error.message || '加载图表数据失败')
+  } finally {
+    loading.value = false
+  }
+}
+
+function normalizeDatabase(value) {
+  const result = value && typeof value === 'object' ? value : {}
+  return {
+    ...result,
+    tables: Array.isArray(result.tables) ? result.tables : [],
+    erDiagram: result.erDiagram && typeof result.erDiagram === 'object' ? result.erDiagram : {}
+  }
+}
+
+function defaultModuleOutlineText() {
+  return moduleOutlineToText(blueprintToModuleOutline(appBlueprint.value, { projectName: project.projectName }))
+}
+
+function moduleDiagramPayload() {
+  const outlineText = moduleDiagramSourceMode.value === 'outline'
+    ? moduleDiagramOutlineText.value
+    : defaultModuleOutlineText()
+  return {
+    sourceMode: moduleDiagramSourceMode.value,
+    outlineText,
+    layoutOptions: moduleDiagramLayoutOptions.value,
+    graph: moduleDiagramGraph.value,
+    projectName: project.projectName
+  }
+}
+
+function applySavedModuleDiagram(diagram = null) {
+  const saved = diagram || savedDiagrams.value.find((item) => item.diagramType === 'module')
+  const payload = parseJson(saved?.diagramJson, null)
+  if (!payload || typeof payload !== 'object') {
+    moduleDiagramSourceMode.value = 'blueprint'
+    moduleDiagramOutlineText.value = defaultModuleOutlineText()
+    moduleDiagramLayoutOptions.value = { density: 'standard', direction: 'horizontal', fontSize: 'standard' }
+    return
+  }
+  moduleDiagramSourceMode.value = payload.sourceMode === 'outline' ? payload.sourceMode : 'blueprint'
+  if (typeof payload.outlineText === 'string') {
+    moduleDiagramOutlineText.value = payload.outlineText
+  } else {
+    moduleDiagramOutlineText.value = defaultModuleOutlineText()
+  }
+  moduleDiagramLayoutOptions.value = {
+    density: payload.layoutOptions?.density || 'standard',
+    direction: payload.layoutOptions?.direction || 'horizontal',
+    fontSize: payload.layoutOptions?.fontSize || 'standard'
+  }
+}
+
+function applySavedDrafts() {
+  const savedEr = savedDiagrams.value.find((item) => item.diagramType === 'er')
+  const erPayload = parseJson(savedEr?.diagramJson, null)
+  erDraft.value = erPayload?.draft || database.value.erDiagram || { positions: {}, relations: [], deletedEdgeIds: [] }
+  const savedArchitecture = savedDiagrams.value.find((item) => item.diagramType === 'architecture')
+  if (savedArchitecture) {
+    applySavedArchitectureDiagram(savedArchitecture)
+  } else {
+    architectureDsl.value = buildDefaultArchitectureDsl(project, database.value)
+    architectureBlackWhite.value = false
+  }
+  const savedFlowchart = savedDiagrams.value.find((item) => item.diagramType === 'flowchart')
+  if (savedFlowchart) {
+    applySavedFlowchartDiagram(savedFlowchart)
+  } else {
+    flowchartDsl.value = buildDefaultFlowchartDsl(project)
+  }
+  const savedAi = savedDiagrams.value.find((item) => isAiDiagramType(item.diagramType))
+  if (savedAi) {
+    applySavedAiDiagram(savedAi)
+  }
+  const savedThreeLine = savedDiagrams.value.find((item) => item.diagramType === 'three_line_table')
+  if (savedThreeLine) {
+    applySavedThreeLineDiagram(savedThreeLine)
+  } else {
+    threeLineDraft.value = {}
+  }
+  applySavedModuleDiagram()
+}
+
+function loadSavedDiagram(diagram) {
+  if (!diagram) return
+  if (diagram.diagramType === 'architecture') {
+    activeDiagram.value = 'architecture'
+    applySavedArchitectureDiagram(diagram)
+    return
+  }
+  if (diagram.diagramType === 'flowchart') {
+    activeDiagram.value = 'flowchart'
+    applySavedFlowchartDiagram(diagram)
+    return
+  }
+  if (diagram.diagramType === 'module') {
+    activeDiagram.value = 'module'
+    applySavedModuleDiagram(diagram)
+    return
+  }
+  if (isAiDiagramType(diagram.diagramType)) {
+    activeDiagram.value = 'ai'
+    applySavedAiDiagram(diagram)
+    return
+  }
+  if (diagram.diagramType === 'three_line_table') {
+    activeDiagram.value = 'three_line_table'
+    applySavedThreeLineDiagram(diagram)
+    return
+  }
+  activeDiagram.value = diagram.diagramType || 'er'
+  if (diagram.diagramType === 'er') {
+    const payload = parseJson(diagram.diagramJson, {})
+    erDraft.value = payload.draft || erDraft.value
+  }
+}
+
+function applySavedArchitectureDiagram(diagram) {
+  const payload = parseJson(diagram.diagramJson, {})
+  architectureDsl.value = typeof payload.dsl === 'string'
+    ? payload.dsl
+    : buildDefaultArchitectureDsl(project, database.value)
+  architectureBlackWhite.value = Boolean(payload.blackWhite)
+}
+
+function applySavedFlowchartDiagram(diagram) {
+  const payload = parseJson(diagram.diagramJson, {})
+  flowchartDsl.value = typeof payload.dsl === 'string'
+    ? payload.dsl
+    : buildDefaultFlowchartDsl(project)
+}
+
+function applySavedAiDiagram(diagram) {
+  const payload = parseJson(diagram.diagramJson, {})
+  aiDiagram.value = {
+    ...payload,
+    diagramId: diagram.diagramId,
+    diagramType: diagram.diagramType,
+    title: diagram.title || payload.title || 'AI 图表',
+    description: diagram.description || payload.description || '',
+    mermaid: diagram.mermaid || payload.mermaid || '',
+    markdown: diagram.markdown || payload.markdown || '',
+    nodes: Array.isArray(payload.nodes) ? payload.nodes : [],
+    edges: Array.isArray(payload.edges) ? payload.edges : []
+  }
+  aiForm.diagramType = String(diagram.diagramType || 'ai_flowchart').replace(/^ai_/, '') || 'flowchart'
+  aiForm.title = aiDiagram.value.title
+}
+
+function applySavedThreeLineDiagram(diagram) {
+  const payload = parseJson(diagram.diagramJson, {})
+  threeLineDraft.value = {
+    selectedTableIds: Array.isArray(payload.selectedTableIds) ? payload.selectedTableIds : []
+  }
+}
+
+async function handleGenerateAiDiagram() {
+  if (!projectId.value) return
+  generatingAiDiagram.value = true
+  try {
+    const result = await generateDiagram(projectId.value, {
+      diagramType: aiForm.diagramType,
+      title: aiForm.title,
+      prompt: aiForm.prompt,
+      appBlueprint: project.appBlueprint,
+      businessLoopPlan: project.businessLoopPlan
+    })
+    aiDiagram.value = result || { nodes: [], edges: [], title: aiForm.title }
+    activeDiagram.value = 'ai'
+    await saveCurrentDiagram()
+    ElMessage.success('图表已生成并保存')
+  } catch (error) {
+    ElMessage.error(error.message || '生成图表失败')
+  } finally {
+    generatingAiDiagram.value = false
+  }
+}
+
+async function saveCurrentDiagram() {
+  if (!projectId.value) return
+  const payload = currentDiagramPayload()
+  savingDiagram.value = true
+  try {
+    const saved = await saveProjectDiagram(projectId.value, payload)
+    mergeSavedDiagram(saved)
+    if (activeDiagram.value === 'ai') {
+      aiDiagram.value = {
+        ...aiDiagram.value,
+        diagramId: saved.diagramId,
+        diagramType: saved.diagramType
+      }
+    }
+    ElMessage.success('图表草稿已保存')
+  } catch (error) {
+    ElMessage.error(error.message || '保存图表失败')
+  } finally {
+    savingDiagram.value = false
+  }
+}
+
+function currentDiagramPayload() {
+  if (activeDiagram.value === 'er') {
+    const existing = savedDiagrams.value.find((item) => item.diagramType === 'er')
+    return {
+      diagramId: existing?.diagramId,
+      diagramType: 'er',
+      title: 'ER 图',
+      description: '数据库实体关系图草稿',
+      diagramJson: JSON.stringify({ draft: erDraft.value })
+    }
+  }
+  if (activeDiagram.value === 'module') {
+    const existing = savedDiagrams.value.find((item) => item.diagramType === 'module')
+    return {
+      diagramId: existing?.diagramId,
+      diagramType: 'module',
+      title: '功能模块图',
+      description: '系统功能模块图草稿',
+      diagramJson: JSON.stringify(moduleDiagramPayload())
+    }
+  }
+  if (activeDiagram.value === 'architecture') {
+    const existing = savedDiagrams.value.find((item) => item.diagramType === 'architecture')
+    return {
+      diagramId: existing?.diagramId,
+      diagramType: 'architecture',
+      title: '系统架构图',
+      description: 'DSL 驱动的分层系统架构图',
+      diagramJson: JSON.stringify({
+        dsl: architectureDsl.value,
+        graph: architectureDiagram.value,
+        blackWhite: architectureBlackWhite.value
+      })
+    }
+  }
+  if (activeDiagram.value === 'flowchart') {
+    const existing = savedDiagrams.value.find((item) => item.diagramType === 'flowchart')
+    return {
+      diagramId: existing?.diagramId,
+      diagramType: 'flowchart',
+      title: '流程图',
+      description: 'DSL 驱动的业务流程图草稿',
+      diagramJson: JSON.stringify({
+        dsl: flowchartDsl.value,
+        graph: flowchartDiagram.value
+      })
+    }
+  }
+  if (activeDiagram.value === 'three_line_table') {
+    const existing = savedDiagrams.value.find((item) => item.diagramType === 'three_line_table')
+    return {
+      diagramId: existing?.diagramId,
+      diagramType: 'three_line_table',
+      title: '三线表',
+      description: '论文数据库设计三线表草稿',
+      diagramJson: JSON.stringify({
+        selectedTableIds: Array.isArray(threeLineDraft.value?.selectedTableIds) ? threeLineDraft.value.selectedTableIds : []
+      })
+    }
+  }
+  if (activeDiagram.value === 'ai') {
+    const diagramType = normalizeAiDiagramType(aiDiagram.value.diagramType || aiForm.diagramType)
+    return {
+      diagramId: aiDiagram.value.diagramId,
+      diagramType,
+      title: aiDiagram.value.title || aiForm.title || 'AI 图表',
+      description: aiDiagram.value.description || '',
+      diagramJson: JSON.stringify({ ...aiDiagram.value, diagramType }),
+      mermaid: aiDiagram.value.mermaid || '',
+      markdown: aiDiagram.value.markdown || ''
+    }
+  }
+  const existing = savedDiagrams.value.find((item) => item.diagramType === activeDiagram.value)
+  return {
+    diagramId: existing?.diagramId,
+    diagramType: activeDiagram.value,
+    title: currentGraph.value.title,
+    description: currentGraph.value.description,
+    diagramJson: JSON.stringify(currentGraph.value)
+  }
+}
+
+function mergeSavedDiagram(saved) {
+  if (!saved?.diagramId) return
+  const index = savedDiagrams.value.findIndex((item) => item.diagramId === saved.diagramId)
+  if (index >= 0) {
+    savedDiagrams.value.splice(index, 1, saved)
+  } else {
+    savedDiagrams.value.unshift(saved)
+  }
+}
+
+function isAiDiagramType(diagramType) {
+  const value = String(diagramType || '')
+  return value.startsWith('ai_') || AI_DIAGRAM_TYPES.has(value)
+}
+
+function normalizeAiDiagramType(diagramType) {
+  const value = String(diagramType || '').replace(/^ai_/, '') || 'flowchart'
+  return `ai_${value}`
+}
+
+function clearArchitectureDsl() {
+  architectureDsl.value = ''
+}
+
+function loadArchitectureExample() {
+  architectureDsl.value = ARCHITECTURE_EXAMPLE_DSL
+  architectureBlackWhite.value = false
+  ElMessage.success('示例 DSL 已加载')
+}
+
+function regenerateArchitectureDsl() {
+  architectureDsl.value = buildDefaultArchitectureDsl(project, database.value)
+  ElMessage.success('已根据当前项目重新生成 DSL')
+}
+
+function refreshArchitecturePreview() {
+  if (!parsedArchitecture.value.layers.length && !parsedArchitecture.value.concerns.length) {
+    ElMessage.warning('请先在 DSL 中添加架构层或横切关注点')
+    return
+  }
+  ElMessage.success('预览已更新')
+}
+
+function clearFlowchartDsl() {
+  flowchartDsl.value = ''
+}
+
+function loadFlowchartExample() {
+  flowchartDsl.value = FLOWCHART_EXAMPLE_DSL
+  ElMessage.success('示例 DSL 已加载')
+}
+
+function regenerateFlowchartDsl() {
+  flowchartDsl.value = buildDefaultFlowchartDsl(project)
+  ElMessage.success('已根据当前项目重新生成流程图 DSL')
+}
+
+function refreshFlowchartPreview() {
+  if (!flowchartDiagram.value.nodes.length) {
+    ElMessage.warning('请先在 DSL 中添加流程节点')
+    return
+  }
+  if (parsedFlowchart.value.errors.length) {
+    ElMessage.warning('DSL 还有格式提示，请修正后再使用')
+    return
+  }
+  ElMessage.success('预览已更新')
+}
+
+function graphSvgText() {
+  const svg = graphSvgRef.value
+  if (!svg) return ''
+  return `<?xml version="1.0" encoding="UTF-8"?>\n${svg.outerHTML}`
+}
+
+function architectureSvgText() {
+  return buildArchitectureExportSvg(architectureDiagram.value, {
+    blackWhite: architectureBlackWhite.value
+  })
+}
+
+function downloadArchitectureSvg() {
+  const text = architectureSvgText()
+  if (!text) return
+  saveBlob(new Blob([text], { type: 'image/svg+xml;charset=utf-8' }), `${architectureDiagram.value.title || '系统架构图'}.svg`)
+}
+
+function flowchartSvgText() {
+  return buildFlowchartExportSvg(flowchartDiagram.value)
+}
+
+function downloadFlowchartSvg() {
+  const text = flowchartSvgText()
+  if (!text) return
+  saveBlob(new Blob([text], { type: 'image/svg+xml;charset=utf-8' }), `${flowchartDiagram.value.title || '流程图'}.svg`)
+}
+
+async function downloadArchitecturePng() {
+  const text = architectureSvgText()
+  if (!text) return
+  const blob = new Blob([text], { type: 'image/svg+xml;charset=utf-8' })
+  const url = URL.createObjectURL(blob)
+  const image = new Image()
+  image.decoding = 'async'
+  try {
+    await new Promise((resolve, reject) => {
+      image.onload = resolve
+      image.onerror = reject
+      image.src = url
+    })
+    const canvas = document.createElement('canvas')
+    canvas.width = architectureDiagram.value.canvas.width
+    canvas.height = architectureDiagram.value.canvas.height
+    const context = canvas.getContext('2d')
+    context.fillStyle = '#ffffff'
+    context.fillRect(0, 0, canvas.width, canvas.height)
+    context.drawImage(image, 0, 0)
+    const pngBlob = await new Promise((resolve) => canvas.toBlob(resolve, 'image/png'))
+    if (pngBlob) {
+      saveBlob(pngBlob, `${architectureDiagram.value.title || '系统架构图'}.png`)
+    }
+  } finally {
+    URL.revokeObjectURL(url)
+  }
+}
+
+async function downloadFlowchartPng() {
+  const text = flowchartSvgText()
+  if (!text) return
+  const blob = new Blob([text], { type: 'image/svg+xml;charset=utf-8' })
+  const url = URL.createObjectURL(blob)
+  const image = new Image()
+  image.decoding = 'async'
+  try {
+    await new Promise((resolve, reject) => {
+      image.onload = resolve
+      image.onerror = reject
+      image.src = url
+    })
+    const canvas = document.createElement('canvas')
+    canvas.width = flowchartDiagram.value.canvas.width
+    canvas.height = flowchartDiagram.value.canvas.height
+    const context = canvas.getContext('2d')
+    context.fillStyle = '#ffffff'
+    context.fillRect(0, 0, canvas.width, canvas.height)
+    context.drawImage(image, 0, 0)
+    const pngBlob = await new Promise((resolve) => canvas.toBlob(resolve, 'image/png'))
+    if (pngBlob) {
+      saveBlob(pngBlob, `${flowchartDiagram.value.title || '流程图'}.png`)
+    }
+  } finally {
+    URL.revokeObjectURL(url)
+  }
+}
+
+function downloadCurrentSvg() {
+  const text = graphSvgText()
+  if (!text) return
+  saveBlob(new Blob([text], { type: 'image/svg+xml;charset=utf-8' }), `${currentGraph.value.title || 'diagram'}.svg`)
+}
+
+async function downloadCurrentPng() {
+  const text = graphSvgText()
+  if (!text) return
+  const blob = new Blob([text], { type: 'image/svg+xml;charset=utf-8' })
+  const url = URL.createObjectURL(blob)
+  const image = new Image()
+  image.decoding = 'async'
+  try {
+    await new Promise((resolve, reject) => {
+      image.onload = resolve
+      image.onerror = reject
+      image.src = url
+    })
+    const canvas = document.createElement('canvas')
+    canvas.width = currentGraph.value.canvas.width
+    canvas.height = currentGraph.value.canvas.height
+    const context = canvas.getContext('2d')
+    context.fillStyle = '#ffffff'
+    context.fillRect(0, 0, canvas.width, canvas.height)
+    context.drawImage(image, 0, 0)
+    const pngBlob = await new Promise((resolve) => canvas.toBlob(resolve, 'image/png'))
+    if (pngBlob) {
+      saveBlob(pngBlob, `${currentGraph.value.title || 'diagram'}.png`)
+    }
+  } finally {
+    URL.revokeObjectURL(url)
+  }
+}
+
+onMounted(loadData)
+</script>
+
+<style scoped lang="scss">
+.diagram-center-page {
+  display: grid;
+  gap: 18px;
+}
+
+.diagram-layout {
+  display: grid;
+  grid-template-columns: 1fr;
+  min-height: 620px;
+}
+
+.diagram-sidebar {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto;
+  align-items: start;
+  gap: 14px 18px;
+  padding: 16px 20px;
+  border-bottom: 1px solid #e7ecf3;
+  background: #fbfdff;
+}
+
+.diagram-kind-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  width: 100%;
+
+  :deep(.el-radio-button) {
+    flex: 0 0 auto;
+  }
+
+  :deep(.el-radio-button__inner) {
+    min-width: 96px;
+    border-left: var(--el-border);
+    border-radius: 8px;
+    text-align: center;
+  }
+}
+
+.sidebar-actions,
+.ai-form,
+.saved-list {
+  display: grid;
+  gap: 10px;
+}
+
+.sidebar-actions {
+  justify-self: end;
+}
+
+.sidebar-actions :deep(.el-button) {
+  min-width: 150px;
+}
+
+.ai-form,
+.saved-list {
+  grid-column: 1 / -1;
+}
+
+.saved-list {
+  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
+}
+
+.saved-list strong {
+  grid-column: 1 / -1;
+  color: #172033;
+  font-size: 14px;
+}
+
+.saved-item {
+  display: grid;
+  gap: 3px;
+  width: 100%;
+  padding: 9px 10px;
+  border: 1px solid #e1e8f0;
+  border-radius: 8px;
+  background: #ffffff;
+  color: #172033;
+  cursor: pointer;
+  text-align: left;
+
+  span {
+    overflow: hidden;
+    font-size: 13px;
+    font-weight: 700;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  small {
+    color: #667085;
+    font-size: 12px;
+  }
+}
+
+.diagram-main {
+  min-width: 0;
+}
+
+.architecture-editor {
+  display: grid;
+  min-height: 680px;
+  background: #ffffff;
+}
+
+.architecture-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  min-height: 68px;
+  padding: 14px 18px;
+  border-bottom: 1px solid #e7ecf3;
+
+  strong,
+  span {
+    display: block;
+  }
+
+  strong {
+    color: #172033;
+    font-size: 16px;
+  }
+
+  span {
+    margin-top: 4px;
+    color: #667085;
+    font-size: 13px;
+  }
+}
+
+.architecture-workbench {
+  display: grid;
+  grid-template-columns: minmax(340px, 42%) minmax(0, 1fr);
+  min-height: 612px;
+}
+
+.architecture-dsl-panel {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  gap: 12px;
+  padding: 14px;
+  border-right: 1px solid #e7ecf3;
+  background: #fbfdff;
+}
+
+.architecture-dsl-header {
+  display: grid;
+  gap: 10px;
+
+  strong,
+  span {
+    display: block;
+  }
+
+  strong {
+    color: #172033;
+    font-size: 15px;
+  }
+
+  span {
+    margin-top: 4px;
+    color: #667085;
+    font-size: 12px;
+    line-height: 1.5;
+  }
+}
+
+.architecture-dsl-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+
+  :deep(.el-button) {
+    margin-left: 0;
+  }
+}
+
+.architecture-grammar {
+  padding: 9px 10px;
+  border: 1px solid #dbeafe;
+  border-radius: 6px;
+  background: #eff6ff;
+  color: #475569;
+  font-size: 12px;
+  line-height: 1.6;
+}
+
+.architecture-dsl-input {
+  flex: 1;
+
+  :deep(.el-textarea__inner) {
+    min-height: 520px !important;
+    border-color: #d9e0ea;
+    border-radius: 6px;
+    color: #172033;
+    font-family: Consolas, "Courier New", "Microsoft YaHei", monospace;
+    font-size: 14px;
+    line-height: 1.65;
+  }
+}
+
+.architecture-dsl-footer {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+
+  span {
+    color: #667085;
+    font-size: 12px;
+  }
+}
+
+.architecture-preview-panel {
+  display: grid;
+  min-width: 0;
+  align-content: start;
+  background: #f8fafc;
+}
+
+.architecture-errors {
+  display: grid;
+  gap: 4px;
+  padding: 10px 18px;
+  border-bottom: 1px solid #fee2e2;
+  background: #fff7f7;
+  color: #b42318;
+  font-size: 12px;
+}
+
+.architecture-preview-scroll {
+  min-height: 612px;
+  overflow: auto;
+  padding: 24px;
+}
+
+.architecture-svg {
+  display: block;
+  background: #ffffff;
+  border: 1px solid #d9e0ea;
+  border-radius: 6px;
+  font-family: "Microsoft YaHei", Arial, sans-serif;
+}
+
+.architecture-svg-title {
+  fill: #0f172a;
+  font-size: 18px;
+  font-weight: 700;
+  text-anchor: middle;
+}
+
+.architecture-layer-title {
+  font-size: 14px;
+  font-weight: 700;
+}
+
+.architecture-layer-subtitle {
+  fill: #64748b;
+  font-size: 12px;
+}
+
+.architecture-component-title,
+.architecture-concern-title {
+  fill: #1f2937;
+  font-size: 13px;
+  font-weight: 700;
+  text-anchor: middle;
+}
+
+.architecture-detail {
+  fill: #64748b;
+  font-size: 10px;
+  text-anchor: middle;
+}
+
+.architecture-arrow {
+  fill: none;
+  stroke: #475569;
+  stroke-width: 1.5;
+}
+
+.architecture-concern-heading {
+  font-size: 13px;
+  font-weight: 700;
+}
+
+.flowchart-editor {
+  display: grid;
+  min-height: 660px;
+  background: #ffffff;
+}
+
+.flowchart-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  min-height: 68px;
+  padding: 14px 18px;
+  border-bottom: 1px solid #e7ecf3;
+
+  strong,
+  span {
+    display: block;
+  }
+
+  strong {
+    color: #172033;
+    font-size: 16px;
+  }
+
+  span {
+    margin-top: 4px;
+    color: #667085;
+    font-size: 13px;
+  }
+}
+
+.flowchart-workbench {
+  display: grid;
+  grid-template-columns: minmax(340px, 38%) minmax(0, 1fr);
+  min-height: 592px;
+}
+
+.flowchart-dsl-panel {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  gap: 12px;
+  padding: 14px;
+  border-right: 1px solid #e7ecf3;
+  background: #fbfdff;
+}
+
+.flowchart-dsl-header {
+  display: grid;
+  gap: 10px;
+
+  strong,
+  span {
+    display: block;
+  }
+
+  strong {
+    color: #172033;
+    font-size: 15px;
+  }
+
+  span {
+    margin-top: 4px;
+    color: #667085;
+    font-size: 12px;
+    line-height: 1.5;
+  }
+}
+
+.flowchart-dsl-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+
+  :deep(.el-button) {
+    margin-left: 0;
+  }
+}
+
+.flowchart-grammar {
+  padding: 9px 10px;
+  border: 1px solid #dbeafe;
+  border-radius: 6px;
+  background: #eff6ff;
+  color: #475569;
+  font-size: 12px;
+  line-height: 1.6;
+}
+
+.flowchart-dsl-input {
+  flex: 1;
+
+  :deep(.el-textarea__inner) {
+    min-height: 460px !important;
+    border-color: #d9e0ea;
+    border-radius: 6px;
+    color: #172033;
+    font-family: Consolas, "Courier New", "Microsoft YaHei", monospace;
+    font-size: 14px;
+    line-height: 1.65;
+  }
+}
+
+.flowchart-dsl-footer {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+
+  span {
+    color: #667085;
+    font-size: 12px;
+  }
+}
+
+.flowchart-preview-panel {
+  display: grid;
+  min-width: 0;
+  align-content: start;
+  background: #f8fafc;
+}
+
+.flowchart-errors {
+  display: grid;
+  gap: 4px;
+  padding: 10px 18px;
+  border-bottom: 1px solid #fee2e2;
+  background: #fff7f7;
+  color: #b42318;
+  font-size: 12px;
+}
+
+.flowchart-preview-scroll {
+  min-height: 592px;
+  overflow: auto;
+  padding: 24px;
+}
+
+.flowchart-svg {
+  display: block;
+  background: #ffffff;
+  border: 1px solid #d9e0ea;
+  border-radius: 6px;
+  font-family: "Microsoft YaHei", Arial, sans-serif;
+}
+
+.flowchart-svg-title {
+  fill: #111111;
+  font-size: 18px;
+  font-weight: 700;
+  text-anchor: middle;
+}
+
+.flowchart-edge {
+  fill: none;
+  stroke: #222222;
+  stroke-width: 1.4;
+}
+
+.flowchart-edge-label {
+  fill: #475569;
+  font-size: 12px;
+  paint-order: stroke;
+  stroke: #ffffff;
+  stroke-width: 4px;
+  text-anchor: middle;
+}
+
+.flowchart-node-shape {
+  fill: #ffffff;
+  stroke: #222222;
+  stroke-width: 1.4;
+}
+
+.flowchart-node-text {
+  fill: #111111;
+  font-size: 14px;
+  text-anchor: middle;
+  dominant-baseline: middle;
+}
+
+.custom-diagram-panel {
+  display: grid;
+  gap: 0;
+  min-height: 620px;
+}
+
+.custom-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  min-height: 68px;
+  padding: 14px 18px;
+  border-bottom: 1px solid #e7ecf3;
+
+  strong,
+  span {
+    display: block;
+  }
+
+  strong {
+    color: #172033;
+    font-size: 16px;
+  }
+
+  span {
+    margin-top: 4px;
+    color: #667085;
+    font-size: 13px;
+  }
+}
+
+.graph-scroll {
+  min-height: 460px;
+  overflow: auto;
+  padding: 24px;
+  background: #f8fafc;
+}
+
+.graph-canvas {
+  display: block;
+  background: #ffffff;
+  border: 1px solid #d9e0ea;
+}
+
+.diagram-edge {
+  fill: none;
+  stroke: #55708f;
+  stroke-width: 1.6;
+}
+
+.diagram-edge-label {
+  fill: #64748b;
+  font-size: 12px;
+  paint-order: stroke;
+  stroke: #ffffff;
+  stroke-width: 4px;
+  text-anchor: middle;
+}
+
+.diagram-node rect {
+  fill: #ffffff;
+  stroke: #2563eb;
+  stroke-width: 1.4;
+}
+
+.diagram-node-title {
+  fill: #172033;
+  font-size: 14px;
+  font-weight: 700;
+  text-anchor: middle;
+}
+
+.diagram-node-lane {
+  fill: #667085;
+  font-size: 11px;
+  text-anchor: middle;
+}
+
+.diagram-code {
+  border-top: 1px solid #e7ecf3;
+}
+
+.diagram-markdown {
+  margin-top: 10px;
+}
+
+@media (max-width: 980px) {
+  .diagram-sidebar {
+    grid-template-columns: 1fr;
+  }
+
+  .sidebar-actions {
+    justify-self: stretch;
+  }
+
+  .sidebar-actions :deep(.el-button) {
+    width: 100%;
+  }
+
+  .architecture-workbench,
+  .flowchart-workbench {
+    grid-template-columns: 1fr;
+  }
+
+  .architecture-dsl-panel,
+  .flowchart-dsl-panel {
+    border-right: 0;
+    border-bottom: 1px solid #e7ecf3;
+  }
+
+  .architecture-toolbar,
+  .flowchart-toolbar {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+}
+</style>
diff --git a/RuoYi-Vue/easycode-web/src/views/diagramCenterModuleView.test.mjs b/RuoYi-Vue/easycode-web/src/views/diagramCenterModuleView.test.mjs
new file mode 100644
index 0000000..4b48f73
--- /dev/null
+++ b/RuoYi-Vue/easycode-web/src/views/diagramCenterModuleView.test.mjs
@@ -0,0 +1,44 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readFileSync } from 'node:fs'
+import { fileURLToPath } from 'node:url'
+import { dirname, resolve } from 'node:path'
+
+const currentDir = dirname(fileURLToPath(import.meta.url))
+
+function readView(name) {
+  return readFileSync(resolve(currentDir, name), 'utf8')
+}
+
+test('diagram center binds module diagram source and layout state', () => {
+  const source = readView('DiagramCenterView.vue')
+
+  assert.equal(source.includes('const moduleDiagramSourceMode = ref'), true)
+  assert.equal(source.includes('const moduleDiagramOutlineText = ref'), true)
+  assert.equal(source.includes('const moduleDiagramLayoutOptions = ref'), true)
+  assert.equal(source.includes('v-model:source-mode="moduleDiagramSourceMode"'), true)
+  assert.equal(source.includes('v-model:outline-text="moduleDiagramOutlineText"'), true)
+  assert.equal(source.includes('v-model:layout-options="moduleDiagramLayoutOptions"'), true)
+  assert.equal(source.includes(':editable="true"'), true)
+})
+
+test('diagram center saves module diagram source, outline, layout, and graph data', () => {
+  const source = readView('DiagramCenterView.vue')
+
+  assert.equal(source.includes('function moduleDiagramPayload'), true)
+  assert.equal(source.includes('sourceMode: moduleDiagramSourceMode.value'), true)
+  assert.equal(source.includes('outlineText,'), true)
+  assert.equal(source.includes('layoutOptions: moduleDiagramLayoutOptions.value'), true)
+  assert.equal(source.includes('graph: moduleDiagramGraph.value'), true)
+  assert.equal(source.includes('diagramJson: JSON.stringify(moduleDiagramPayload())'), true)
+})
+
+test('diagram center restores saved module diagram payload', () => {
+  const source = readView('DiagramCenterView.vue')
+
+  assert.equal(source.includes('function applySavedModuleDiagram'), true)
+  assert.equal(source.includes("savedDiagrams.value.find((item) => item.diagramType === 'module')"), true)
+  assert.equal(source.includes('moduleDiagramSourceMode.value = payload.sourceMode'), true)
+  assert.equal(source.includes('moduleDiagramOutlineText.value = payload.outlineText'), true)
+  assert.equal(source.includes('moduleDiagramLayoutOptions.value ='), true)
+})