职级视图再修：技能节点补词表 level 分带（此前全部落中级带），带间距拉大、技能/岗位分行限排，宽高比 5.2→2.4

app/api/routes.py

@@ -327,9 +327,16 @@ def restart_service() -> dict:
 
 @app.get("/api/graph")
 def graph() -> dict:
-    """返回节点与边（含时间区间）与演化事件，供前端渲染全景图谱。"""
+    """返回节点与边（含时间区间）与演化事件，供前端渲染全景图谱。
+
+    技能节点附带词表 level（L1/L2/L3），前端职级演进视图按此分带。
+    """
     kg = _get_kg()
     nodes = [{"id": n, **d} for n, d in kg.g.nodes(data=True)]
+    skill_lv = {s["name"]: s.get("level") for s in load_lexicon(resolve(_cfg, "lexicon_path"))["skills"]}
+    for n in nodes:
+        if n.get("type") == "Skill" and not n.get("level"):
+            n["level"] = skill_lv.get(n["id"], "L2")
     edges = [{"source": u, "target": v, **d} for u, v, d in kg.g.edges(data=True)]
     events = sorted((e.model_dump() for e in kg.events), key=lambda e: e["window"])
     return _ok({"nodes": nodes, "edges": edges, "events": events, "stats": kg.stats()})