diff --git a/docs/assets/images/figure02-mcp-tech-stack-framework.svg b/docs/assets/images/figure02-mcp-tech-stack-framework.svg
index 16fddec..948fb3b 100644
--- a/docs/assets/images/figure02-mcp-tech-stack-framework.svg
+++ b/docs/assets/images/figure02-mcp-tech-stack-framework.svg
@@ -4,317 +4,264 @@
 图表名称：个人级研究助手智能体 - 开发框架与技术栈架构图
 文件命名：project-caffeine-tech-stack-framework.svg
 用途：展示从宿主端到三个核心 MCP Server 的底层技术栈、核心算法、Monorepo工程化及安全交互框架。
-版本：v1.0.0 (Added Legend)
+版本：v2.0.0
 作者：Gitconomy Research-郭晧
 SPDX-License-Identifier: MIT & CC-BY-SA-4.0
 创建日期：2026-02-27
+更新日期：2026-03-08
+更新说明：更新更新的项目开发框架说明文档重新设计项目开发框架工具链构成的逻辑示意图。
 ================================================================================
 -->
 
-  <!-- Background: Solid White for Git compatibility -->
-  <rect width="100%" height="100%" fill="#FFFFFF" />
+<!-- Background: Solid White -->
+<rect width="100%" height="100%" fill="#FFFFFF" />
 
-  <defs>
-    <style>
-      :root {
-        /* 语义色定义 */
-        --c-cloud-blue: #0099FF;
-        --c-cloud-blue-light: rgba(0, 153, 255, 0.08);
-        --c-local-green: #009900;
-        --c-local-green-light: rgba(0, 153, 0, 0.08);
-        --c-risk-amber: #FF991F;
-        --c-risk-amber-light: rgba(255, 153, 31, 0.08);
-        --c-gov-blue: #0052CC;
-        --c-gov-blue-light: rgba(0, 82, 204, 0.04);
-        --c-neutral-gray: #475569;
-        --c-neutral-gray-light: #E2E8F0;
-      }
+<defs>
+  <!-- CSS 变量与全局样式 -->
+  <style>
+    :root {
+      /* 语义色彩体系 */
+      --c-cloud-blue: #0099FF;
+      --c-cloud-blue-light: rgba(0, 153, 255, 0.08);
+      --c-local-green: #009900;
+      --c-local-green-light: rgba(0, 153, 0, 0.08);
+      --c-risk-amber: #FF991F;
+      --c-risk-amber-light: rgba(255, 153, 31, 0.08);
+      --c-neutral-gray: #475569;
+      --c-neutral-gray-light: #F1F5F9;
+      --c-gov-blue: #0052CC;
+      --c-op-green: #00875A;
 
-      /* 字体降级机制 */
-      .font-sans { font-family: 'Noto Sans', 'Helvetica Neue', Arial, sans-serif; }
-      .font-mono { font-family: 'JetBrains Mono', Consolas, 'Courier New', monospace; }
+      /* 字体系统降级适配 */
+      --font-sans: 'Noto Sans', 'Helvetica Neue', Arial, sans-serif;
+      --font-mono: 'JetBrains Mono', Consolas, 'Courier New', monospace;
+    }
 
-      /* 文本层级 */
-      .title-main { font-size: 16px; font-weight: bold; fill: var(--c-neutral-gray); }
-      .title-sub { font-size: 14px; font-weight: bold; fill: #0F172A; }
-      .tech-badge { font-size: 12px; font-weight: bold; }
-      .desc-text { font-size: 12px; fill: #64748B; }
-    </style>
+    /* 文本工具类 */
+    .font-sans { font-family: var(--font-sans); }
+    .font-mono { font-family: var(--font-mono); }
+    .text-bold { font-weight: bold; }
+  </style>
 
-    <!-- 箭头标记 -->
-    <marker id="arrow-green" markerWidth="8" markerHeight="8" refX="7" refY="4" orient="auto">
-      <path d="M 0 0 L 8 4 L 0 8 Z" fill="var(--c-local-green)" />
-    </marker>
-    <marker id="arrow-blue" markerWidth="8" markerHeight="8" refX="7" refY="4" orient="auto">
-      <path d="M 0 0 L 8 4 L 0 8 Z" fill="var(--c-cloud-blue)" />
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-    <marker id="arrow-amber" markerWidth="8" markerHeight="8" refX="7" refY="4" orient="auto">
-      <path d="M 0 0 L 8 4 L 0 8 Z" fill="var(--c-risk-amber)" />
-    </marker>
-  </defs>
+  <!-- 箭头标记定义 -->
+  <marker id="arrow-green" viewBox="0 0 10 10" refX="8" refY="5" markerWidth="6" markerHeight="6" orient="auto-start-reverse">
+    <path d="M 0 0 L 10 5 L 0 10 z" fill="var(--c-local-green)" />
+  </marker>
+  <marker id="arrow-amber" viewBox="0 0 10 10" refX="8" refY="5" markerWidth="6" markerHeight="6" orient="auto-start-reverse">
+    <path d="M 0 0 L 10 5 L 0 10 z" fill="var(--c-risk-amber)" />
+  </marker>
+  <marker id="arrow-blue" viewBox="0 0 10 10" refX="8" refY="5" markerWidth="6" markerHeight="6" orient="auto-start-reverse">
+    <path d="M 0 0 L 10 5 L 0 10 z" fill="var(--c-cloud-blue)" />
+  </marker>
+</defs>
 
-  <!--
-  ===========================================================================
-       顶层标题块 (Title Block)
-  ===========================================================================
-  -->
-  <g id="title-block" transform="translate(600, 40)">
-    <text y="0" text-anchor="middle" class="font-mono" font-size="12" fill="var(--c-neutral-gray)" letter-spacing="1">FIG-02</text>
-    <text y="30" text-anchor="middle" class="font-sans" font-weight="bold" font-size="24" fill="#000000">Project Caffeine开发框架与技术栈架构图</text>
-    <text y="55" text-anchor="middle" class="font-mono" font-size="14" fill="var(--c-neutral-gray)">架构图 &gt; 智能体 MCP &gt; 开发框架和技术堆栈</text>
-    <rect x="-30" y="70" width="60" height="3" fill="var(--c-gov-blue)" />
+<!-- ==========================================
+     1. 标题区域 (Title Block)
+=========================================== -->
+<g id="title-block" transform="translate(500, 40)">
+  <!-- 1. Figure ID -->
+  <text y="0" text-anchor="middle" class="font-mono text-bold" font-size="12" fill="var(--c-neutral-gray)" letter-spacing="1">FIGURE-02</text>
+
+  <!-- 2. Main Title -->
+  <text y="30" text-anchor="middle" class="font-sans text-bold" font-size="24" fill="#000000">Project Caffeine 开发框架与技术栈</text>
+
+  <!-- 3. Breadcrumbs -->
+  <text y="55" text-anchor="middle" class="font-mono" font-size="14" fill="var(--c-neutral-gray)">Framework > Tech Stack > Monolithic Server</text>
+
+  <!-- 4. Context Indicator (Y=70, 高度3，底部为 Y=73。相对于 translate(500, 40)，绝对底部 Y=113) -->
+  <rect x="-30" y="70" width="60" height="3" fill="var(--c-local-green)" />
+</g>
+
+<!-- ==========================================
+     2. 核心架构主体 (Diagram Content)
+     为了与标题底部(113)精确保持50间距，设定 translate Y 为 163
+=========================================== -->
+<g id="diagram-content" transform="translate(0, 163)">
+
+  <!-- 外部客户端 (MCP Client Desktop) 笔记本图标 -->
+  <g id="mcp-client" transform="translate(500, 0)">
+    <!-- 屏幕外框 -->
+    <rect x="-35" y="0" width="70" height="45" rx="4" fill="none" stroke="var(--c-cloud-blue)" stroke-width="3"/>
+    <!-- 屏幕内侧 -->
+    <rect x="-31" y="4" width="62" height="37" rx="1" fill="var(--c-cloud-blue-light)"/>
+    <!-- 笔记本底座 -->
+    <path d="M-45,45 L45,45 L52,52 L-52,52 Z" fill="var(--c-cloud-blue)"/>
+    <!-- 触控板区 -->
+    <rect x="-8" y="47" width="16" height="3" fill="#FFFFFF" opacity="0.5"/>
+    <!-- 键盘区装饰 -->
+    <path d="M-35,46 L35,46 L38,49 L-38,49 Z" fill="#FFFFFF" opacity="0.2"/>
+
+    <text x="0" y="75" text-anchor="middle" class="font-sans text-bold" font-size="14" fill="var(--c-cloud-blue)">Client (Claude Desktop / Cherry Studio)</text>
   </g>
 
-  <!--
-  ===========================================================================
-       Layer 1: 宿主环境与模型层 (Host & LLM Layer)
-  ===========================================================================
-  -->
-  <g id="layer-host" transform="translate(100, 140)">
-    <text x="0" y="0" class="font-sans title-main">Layer 1: 宿主应用与大脑层 (Host &amp; Brain)</text>
-    <rect x="0" y="15" width="1000" height="90" rx="8" fill="var(--c-neutral-gray-light)" opacity="0.2" stroke="var(--c-neutral-gray)" stroke-dasharray="4 4" stroke-width="1.5" />
+  <!-- 连接线条：客户端到 MCP Server -->
+  <line x1="500" y1="85" x2="500" y2="135" stroke="var(--c-local-green)" stroke-width="2" marker-end="url(#arrow-green)" />
 
-    <!-- 客户端 -->
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-    <text x="140" y="55" text-anchor="middle" class="font-sans title-sub">MCP Client 宿主联调环境</text>
-    <text x="140" y="75" text-anchor="middle" class="font-mono desc-text">VS Code (MCP 插件) / Claude</text>
+  <!-- 单体服务器容器 (整体向下偏移以容纳客户端) -->
+  <g id="monolithic-server" transform="translate(0, 100)">
 
-    <!-- 双向箭头 -->
-    <line x1="260" y1="60" x2="330" y2="60" stroke="var(--c-neutral-gray)" stroke-width="2" stroke-dasharray="3 3"/>
+    <!-- 单体服务器边界 (Monolithic Boundary) -->
+    <g id="monolithic-boundary">
+      <rect x="60" y="0" width="880" height="570" rx="12" fill="none" stroke="var(--c-local-green)" stroke-width="2" stroke-dasharray="6 4" />
 
-    <!-- 远程模型 (Brain) -->
-    <g transform="translate(400, 60)">
-      <!-- 六边形 Token -->
-      <polygon points="0,-30 26,-15 26,15 0,30 -26,15 -26,-15" fill="var(--c-cloud-blue-light)" stroke="var(--c-cloud-blue)" stroke-width="2" />
-      <text x="40" y="-5" class="font-sans title-sub" fill="var(--c-cloud-blue)">Remote LLM Brain</text>
-      <text x="40" y="15" class="font-mono desc-text">Claude 3.5 / DeepSeek (Context Engine)</text>
-    </g>
-  </g>
-
-  <!--
-  ===========================================================================
-       Layer 2: 协议总线 (Protocol Bus)
-  ===========================================================================
-  -->
-  <g id="layer-protocol" transform="translate(100, 270)">
-    <text x="0" y="0" class="font-sans title-main">Layer 2: 通信协议层 (JSON-RPC 2.0 Bus)</text>
-    <rect x="0" y="15" width="1000" height="40" rx="20" fill="var(--c-gov-blue-light)" stroke="var(--c-gov-blue)" stroke-width="2" />
-    <text x="500" y="40" text-anchor="middle" class="font-mono" font-size="14" font-weight="bold" fill="var(--c-gov-blue)">mcp-protocol: STDIO 协议 (MVP阶段：本地 stdin/stdout 零网络开销)</text>
-
-    <!-- 连接上下层的管线 -->
-    <line x1="210" y1="-35" x2="210" y2="15" stroke="var(--c-local-green)" stroke-width="3" marker-end="url(#arrow-green)" />
-    <line x1="210" y1="55" x2="210" y2="90" stroke="var(--c-local-green)" stroke-width="3" marker-end="url(#arrow-green)" />
-
-    <line x1="500" y1="55" x2="500" y2="90" stroke="var(--c-local-green)" stroke-width="3" marker-end="url(#arrow-green)" />
-
-    <line x1="850" y1="55" x2="850" y2="90" stroke="var(--c-local-green)" stroke-width="3" marker-end="url(#arrow-green)" />
-  </g>
-
-  <!--
-  ===========================================================================
-       Layer 3: 核心 MCP Server 集群框架 (Microservices Stack)
-  ===========================================================================
-  -->
-  <g id="layer-servers" transform="translate(100, 370)">
-    <text x="0" y="0" class="font-sans title-main">Layer 3: 核心智能体引擎 / MCP Server 集群开发框架</text>
-
-    <!-- 工程化管控边界 (Monorepo) -->
-    <rect x="0" y="15" width="1000" height="360" rx="8" fill="transparent" stroke="var(--c-neutral-gray)" stroke-dasharray="4 4" stroke-width="2" />
-    <rect x="0" y="15" width="1000" height="30" fill="var(--c-neutral-gray-light)" opacity="0.4" rx="8"/>
-    <text x="20" y="35" class="font-mono desc-text" font-weight="bold" fill="var(--c-neutral-gray)">📦 npm Workspaces (Monorepo) - 统一包管理 / 依赖隔离 / 共享 JSON-RPC Schema</text>
-
-    <!-- ================= S1: 文献查询 Server ================= -->
-    <g transform="translate(20, 45)">
-      <rect x="0" y="0" width="300" height="320" rx="8" fill="var(--c-local-green-light)" stroke="var(--c-local-green)" stroke-width="2" />
-      <rect x="0" y="0" width="300" height="40" fill="var(--c-local-green)" rx="8" />
-      <rect x="0" y="20" width="300" height="20" fill="var(--c-local-green)" />
-      <text x="150" y="25" text-anchor="middle" class="font-sans title-sub" fill="#FFFFFF">S1: 文献查询 Server (执行者)</text>
-
-      <!-- Tech Stack Badges (Unified TS/Node) -->
-      <text x="20" y="65" class="font-sans desc-text" font-weight="bold">开发环境与框架</text>
-      <rect x="20" y="75" width="115" height="24" rx="12" fill="#FFFFFF" stroke="var(--c-local-green)" />
-      <text x="77.5" y="91" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-local-green)">Node.js (v20+)</text>
-      <rect x="145" y="75" width="95" height="24" rx="12" fill="#FFFFFF" stroke="var(--c-local-green)" />
-      <text x="192.5" y="91" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-local-green)">@mcp/sdk-ts</text>
-
-      <!-- Core Algorithms -->
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-      <rect x="20" y="140" width="260" height="40" rx="4" fill="#FFFFFF" stroke="var(--c-risk-amber)" stroke-dasharray="2 2" />
-      <text x="150" y="165" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-risk-amber)">Semantic Chunking 文本切块算法</text>
-
-      <rect x="20" y="190" width="260" height="40" rx="4" fill="#FFFFFF" stroke="var(--c-risk-amber)" stroke-dasharray="2 2" />
-      <text x="150" y="215" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-risk-amber)">Playwright / Firecrawl 网页深抓取</text>
-
-      <!-- APIs -->
-      <text x="20" y="260" class="font-sans desc-text" font-weight="bold">集成外部接口</text>
-      <rect x="20" y="270" width="125" height="24" rx="4" fill="var(--c-cloud-blue-light)" stroke="var(--c-cloud-blue)" />
-      <text x="82.5" y="286" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-cloud-blue)">arXiv API</text>
-      <rect x="155" y="270" width="125" height="24" rx="4" fill="var(--c-cloud-blue-light)" stroke="var(--c-cloud-blue)" />
-      <text x="217.5" y="286" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-cloud-blue)">S.Scholar API</text>
+      <!-- 边界标签 -->
+      <rect x="80" y="-12" width="220" height="24" fill="#FFFFFF" />
+      <text x="90" y="4" class="font-mono text-bold" font-size="14" fill="var(--c-local-green)">📦 Monolithic MCP Server (Node.js)</text>
     </g>
 
-    <!-- ================= S2: 提示词策略 Server ================= -->
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-      <rect x="0" y="20" width="300" height="20" fill="var(--c-local-green)" />
-      <text x="150" y="25" text-anchor="middle" class="font-sans title-sub" fill="#FFFFFF">S2: 提示词策略 Server (军师)</text>
+    <!-- 内部连接线条 (Data Flows) -->
+    <g id="data-flows">
+      <!-- Core to Zod (Sync) -->
+      <line x1="380" y1="190" x2="340" y2="190" stroke="var(--c-local-green)" stroke-width="2" marker-end="url(#arrow-green)" marker-start="url(#arrow-green)" />
 
-      <!-- Tech Stack Badges (Unified TS/Node) -->
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-      <rect x="20" y="75" width="115" height="24" rx="12" fill="#FFFFFF" stroke="var(--c-local-green)" />
-      <text x="77.5" y="91" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-local-green)">Node.js (v20+)</text>
-      <rect x="145" y="75" width="95" height="24" rx="12" fill="#FFFFFF" stroke="var(--c-local-green)" />
-      <text x="192.5" y="91" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-local-green)">@mcp/sdk-ts</text>
+      <!-- Core to Axios (Async) -->
+      <line x1="620" y1="190" x2="660" y2="190" stroke="var(--c-risk-amber)" stroke-width="2" stroke-dasharray="4 2" marker-end="url(#arrow-amber)" />
 
-      <!-- Core Algorithms -->
-      <text x="20" y="130" class="font-sans desc-text" font-weight="bold">核心智能体架构与引擎</text>
-      <rect x="20" y="140" width="260" height="40" rx="4" fill="#FFFFFF" stroke="var(--c-gov-blue)" />
-      <text x="150" y="165" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-gov-blue)">Persona Matrix 角色化矩阵</text>
+      <!-- Core to Runtime -->
+      <line x1="500" y1="230" x2="500" y2="260" stroke="var(--c-local-green)" stroke-width="2" marker-end="url(#arrow-green)" />
 
-      <rect x="20" y="190" width="260" height="40" rx="4" fill="#FFFFFF" stroke="var(--c-gov-blue)" />
-      <text x="150" y="215" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-gov-blue)">Exploration State (防死循环账本)</text>
-
-      <!-- Prompts -->
-      <text x="20" y="260" class="font-sans desc-text" font-weight="bold">注入的静态思维框架 (Prompts)</text>
-      <rect x="20" y="270" width="80" height="24" rx="4" fill="#F1F5F9" stroke="var(--c-neutral-gray)" />
-      <text x="60" y="286" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-neutral-gray)">5W3H</text>
-      <rect x="110" y="270" width="80" height="24" rx="4" fill="#F1F5F9" stroke="var(--c-neutral-gray)" />
-      <text x="150" y="286" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-neutral-gray)">SCQA</text>
-      <rect x="200" y="270" width="80" height="24" rx="4" fill="#F1F5F9" stroke="var(--c-neutral-gray)" />
-      <text x="240" y="286" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-neutral-gray)">SWOT</text>
+      <!-- Axios to External API (Cloud) -->
+      <line x1="900" y1="190" x2="950" y2="190" stroke="var(--c-cloud-blue)" stroke-width="2" stroke-dasharray="4 2" marker-end="url(#arrow-blue)" />
+      <text x="960" y="194" class="font-mono" font-size="12" fill="var(--c-cloud-blue)">Academic APIs</text>
     </g>
 
-    <!-- ================= S3: CoT 多步推理 Server ================= -->
-    <g transform="translate(680, 45)">
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-      <rect x="0" y="0" width="300" height="40" fill="var(--c-local-green)" rx="8" />
-      <rect x="0" y="20" width="300" height="20" fill="var(--c-local-green)" />
-      <text x="150" y="25" text-anchor="middle" class="font-sans title-sub" fill="#FFFFFF">S3: CoT 推理 Server (分析师)</text>
+    <!-- ================== 层级 1：协议与网络层 (Y=40) ================== -->
+    <!-- MCP SDK -->
+    <g id="card-mcp" transform="translate(380, 40)">
+      <rect width="240" height="80" rx="6" fill="var(--c-cloud-blue-light)" stroke="var(--c-cloud-blue)" stroke-width="1.5" />
+      <rect width="6" height="80" rx="3" fill="var(--c-cloud-blue)" />
+      <text x="20" y="24" class="font-sans text-bold" font-size="14" fill="var(--c-cloud-blue)">协议层 (Protocol)</text>
+      <text x="20" y="46" class="font-mono text-bold" font-size="16" fill="#1e293b">MCP SDK</text>
+      <text x="20" y="66" class="font-sans" font-size="12" fill="var(--c-neutral-gray)">@modelcontextprotocol/sdk (stdio/SSE)</text>
+    </g>
 
-      <!-- Tech Stack Badges (Unified TS/Node) -->
-      <text x="20" y="65" class="font-sans desc-text" font-weight="bold">开发环境与框架</text>
-      <rect x="20" y="75" width="115" height="24" rx="12" fill="#FFFFFF" stroke="var(--c-local-green)" />
-      <text x="77.5" y="91" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-local-green)">Node.js (v20+)</text>
-      <rect x="145" y="75" width="95" height="24" rx="12" fill="#FFFFFF" stroke="var(--c-local-green)" />
-      <text x="192.5" y="91" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-local-green)">@mcp/sdk-ts</text>
+    <!-- ================== 层级 2：核心业务层 (Y=150) ================== -->
+    <!-- Zod -->
+    <g id="card-zod" transform="translate(100, 150)">
+      <rect width="240" height="80" rx="6" fill="var(--c-local-green-light)" stroke="var(--c-local-green)" stroke-width="1.5" />
+      <rect width="6" height="80" rx="3" fill="var(--c-local-green)" />
+      <text x="20" y="24" class="font-sans text-bold" font-size="14" fill="var(--c-local-green)">校验工具 (Validation)</text>
+      <text x="20" y="46" class="font-mono text-bold" font-size="16" fill="#1e293b">Zod</text>
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+    </g>
 
-      <!-- Core Algorithms -->
-      <text x="20" y="130" class="font-sans desc-text" font-weight="bold">质量把控与数据组装逻辑</text>
-      <rect x="20" y="140" width="260" height="40" rx="4" fill="#FFFFFF" stroke="var(--c-gov-blue)" />
-      <text x="150" y="165" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-gov-blue)">引文密度强制校验 (Citation Check)</text>
+    <!-- TypeScript -->
+    <g id="card-ts" transform="translate(380, 150)">
+      <rect width="240" height="80" rx="6" fill="var(--c-local-green-light)" stroke="var(--c-local-green)" stroke-width="2" />
+      <rect width="6" height="80" rx="3" fill="var(--c-local-green)" />
+      <text x="20" y="24" class="font-sans text-bold" font-size="14" fill="var(--c-local-green)">核心语言 (Core Language)</text>
+      <text x="20" y="46" class="font-mono text-bold" font-size="16" fill="#1e293b">TypeScript</text>
+      <text x="20" y="66" class="font-sans" font-size="12" fill="var(--c-neutral-gray)">所有服务逻辑与控制流强制使用</text>
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-      <text x="150" y="215" text-anchor="middle" class="font-mono tech-badge" fill="var(--c-gov-blue)">双轨制落盘编译器 (JSON-to-MD)</text>
+    <!-- axios -->
+    <g id="card-axios" transform="translate(660, 150)">
+      <rect width="240" height="80" rx="6" fill="var(--c-risk-amber-light)" stroke="var(--c-risk-amber)" stroke-width="1.5" />
+      <rect width="6" height="80" rx="3" fill="var(--c-risk-amber)" />
+      <text x="20" y="24" class="font-sans text-bold" font-size="14" fill="var(--c-risk-amber)">HTTP 客户端 (Network I/O)</text>
+      <text x="20" y="46" class="font-mono text-bold" font-size="16" fill="#1e293b">axios</text>
+      <text x="20" y="66" class="font-sans" font-size="12" fill="var(--c-neutral-gray)">封装学术 API，支持重试与速率限制</text>
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+    <!-- ================== 层级 3：运行环境层 (Y=260) ================== -->
+    <!-- Node.js -->
+    <g id="card-node" transform="translate(380, 260)">
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+      <text x="20" y="46" class="font-mono text-bold" font-size="16" fill="#1e293b">Node.js LTS v20+</text>
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+    </g>
+
+    <!-- 分隔线 -->
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+
+    <!-- ================== 层级 4：工程化基础工具 (Y=390) ================== -->
+    <!-- Winston -->
+    <g id="card-log" transform="translate(100, 390)">
+      <rect width="240" height="80" rx="6" fill="var(--c-neutral-gray-light)" stroke="var(--c-neutral-gray)" stroke-width="1" />
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+      <text x="20" y="24" class="font-sans text-bold" font-size="14" fill="var(--c-neutral-gray)">日志工具 (Logging)</text>
+      <text x="20" y="46" class="font-mono text-bold" font-size="16" fill="#1e293b">winston / log4js</text>
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+    <!-- VS Code -->
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+      <text x="20" y="24" class="font-sans text-bold" font-size="14" fill="var(--c-neutral-gray)">调试工具 (Debugging)</text>
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+    <!-- Jest + k6 -->
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+</g>
+
+<!-- ==========================================
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+     向下调整布局至 Y=890 适应新高度
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+    <text x="0" y="8" class="font-sans text-bold" font-size="12" fill="var(--c-neutral-gray)">图例说明:</text>
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+    <!-- 图例项 1: Cloud/External -->
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+    </g>
+
+    <!-- 图例项 2: Local/Core -->
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+      <rect x="0" y="-2" width="12" height="12" rx="2" fill="var(--c-local-green)" />
+      <text x="18" y="8" class="font-mono" font-size="12" fill="var(--c-neutral-gray)">核心引擎/计算 (Core/Sync)</text>
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+
+    <!-- 图例项 3: Network I/O -->
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+      <text x="18" y="8" class="font-mono" font-size="12" fill="var(--c-neutral-gray)">网络/异步流 (Async I/O)</text>
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+
+    <!-- 图例项 4: Engineering -->
+    <g transform="translate(620, 0)">
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     </g>
   </g>
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-    本作品采用 CC-BY-SA 4.0 进行许可，© 2025-2026 Gitconomy Research社区
+<!-- ==========================================
+     4. 底部许可声明 (License)
+     向下调整至 Y=950
+=========================================== -->
+<g id="license" transform="translate(500, 950)">
+  <text text-anchor="middle" class="font-sans" font-size="10" fill="#94a3b8">
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