岗位覆盖扩充至 26 个 + 图谱岗位子图模式

- 新增 8 岗位族（大数据/机器学习/机器人/数据治理/边缘计算/物联网安全/智能系统架构/隐私计算），词表 161→179
- 图谱详情面板新增'岗位子图'模式（只看该岗位及一跳邻居，徽标可退出）
- 测试集扩至 176 条、匹配标注 52 对；real_jd_500 F1 99.82%；合成三项 100% 保持

webui/graph.js

@@ -14,6 +14,7 @@
     filters: { types: { Job: true, Skill: true, Industry: true, Scenario: true }, category: "", level: "",
                edges: { required: true, preferred: true, applies: true, belongs: true } },
     selected: null,                      // 选中节点 id
+    soloJob: null,                       // 岗位子图模式：只看该岗位及其一跳邻居
     hover: null,
     navStack: [],                        // 详情面板导航栈
     drag: null,                          // {mode:'pan'|'node', ...}
@@ -161,6 +162,9 @@
   }
   function visible(n) {
     if (!G.filters.types[n.type]) return false;
+    if (G.soloJob) {                       // 岗位子图：只保留该岗位与一跳邻居
+      if (n.id !== G.soloJob && !neighborsOf(G.soloJob).has(n.id)) return false;
+    }
     if (n.type === "Job") {
       if (G.filters.category && n.category !== G.filters.category) return false;
       if (G.filters.level && jobLevel(n) !== G.filters.level) return false;
@@ -597,6 +601,18 @@
   }
   CN.gotoNode = locateNode;
 
+  function updateSoloBadge() {
+    const badge = $("#solo-badge");
+    if (!badge) return;
+    badge.classList.toggle("hidden", !G.soloJob);
+    if (G.soloJob) {
+      const n = G.nodes[G.idx[G.soloJob]];
+      $("#solo-badge-text").textContent = `岗位子图：${(n && (n.title || n.id)) || G.soloJob}`;
+    }
+  }
+  const soloExit = $("#solo-exit");
+  if (soloExit) soloExit.onclick = () => { G.soloJob = null; updateSoloBadge(); requestDraw(); };
+
   /* ================= 备注（localStorage） ================= */
   const getNotes = () => JSON.parse(localStorage.getItem(NOTES_KEY) || "{}");
   function nodeNotes(id) { return getNotes()[id] || []; }
@@ -720,6 +736,7 @@
             <button class="btn btn-secondary btn-sm" id="dt-sources">查看来源</button>`}
           <button class="btn btn-secondary btn-sm" id="dt-note">添加备注</button>
           ${n.type === "Job" && !isPending ? `<button class="btn btn-secondary btn-sm" id="dt-evo">查看演化</button>
+          <button class="btn btn-secondary btn-sm" id="dt-solo">岗位子图</button>
           <button class="btn btn-primary btn-sm full" id="dt-learn">生成学习路径</button>` : ""}
         </div>
       </div>
@@ -765,6 +782,13 @@
       $("#evo-job-select").value = id;
       $("#evo-job-select").dispatchEvent(new Event("change"));
     };
+    const soloBtn = $("#dt-solo");
+    if (soloBtn) soloBtn.onclick = () => {
+      G.soloJob = G.soloJob === id ? null : id;
+      updateSoloBadge();
+      requestDraw();
+      if (G.soloJob) toast(`已进入「${n.title || id}」岗位子图（只看该岗位与一跳技能/场景/行业）`, "success");
+    };
     const learnBtn = $("#dt-learn");
     if (learnBtn) learnBtn.onclick = () => {
       CN.switchView("path");

webui/index.html

@@ -135,6 +135,12 @@
           <div class="graph-canvas-wrap card" id="graph-canvas-wrap">
             <canvas id="graph-canvas"></canvas>
 
+            <!-- 岗位子图状态徽标 -->
+            <div class="solo-badge hidden" id="solo-badge">
+              <span id="solo-badge-text">岗位子图</span>
+              <button id="solo-exit" title="退出岗位子图">×</button>
+            </div>
+
             <!-- 左上浮动工具条 -->
             <div class="graph-toolbar">
               <button class="tool-btn" id="tool-zoom-in" title="放大"><svg viewBox="0 0 24 24"><circle cx="11" cy="11" r="7"/><path d="M21 21l-4.35-4.35M11 8v6M8 11h6"/></svg></button>

webui/style.css

@@ -911,3 +911,16 @@ svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width:
   border-top: 1px solid var(--border);
   user-select: text;
 }
+
+/* 岗位子图状态徽标 */
+.solo-badge {
+  position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
+  display: flex; align-items: center; gap: 8px; z-index: 30;
+  background: var(--primary); color: #fff; font-size: 12px;
+  border-radius: 999px; padding: 4px 8px 4px 14px; box-shadow: var(--shadow-pop);
+}
+.solo-badge button {
+  border: none; background: rgba(255,255,255,.25); color: #fff;
+  width: 18px; height: 18px; border-radius: 50%; cursor: pointer; line-height: 1;
+}
+.solo-badge button:hover { background: rgba(255,255,255,.45); }