feat: ship v1.0.0 with character graph and writing analytics

Add P7 Cytoscape relationship graph with setting CRUD, P9 cockpit analytics driven by writing_sessions, chapter POV selection, and full test coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

public/locales/zh-CN/translation.json

@@ -226,6 +226,32 @@
   "cockpit.heatmap": "写作热力图",
   "cockpit.achievements": "写作成就",
   "cockpit.pomodoroToday": "今日番茄 {{count}} 次",
+  "cockpit.openGraph": "角色关系图谱",
+  "graph.title": "角色关系图谱",
+  "graph.layout.cose": "力导向",
+  "graph.layout.grid": "网格",
+  "graph.layout.circle": "圆形",
+  "graph.truncated": "角色过多，仅显示前 {{count}} 个",
+  "graph.sidebar.node": "角色：{{name}}",
+  "graph.sidebar.edge": "关系：{{label}}",
+  "graph.sidebar.hint": "点击节点或边查看详情",
+  "graph.editSetting": "编辑设定",
+  "graph.filter.all": "全部角色",
+  "graph.filter.connected": "仅有关系",
+  "relationship.title": "角色关系",
+  "relationship.add": "添加关系",
+  "relationship.target": "目标角色",
+  "relationship.label": "关系描述",
+  "relationship.intimacy": "亲密度",
+  "analytics.title": "写作分析",
+  "analytics.speedToday": "今日 {{wpm}} 字/分钟",
+  "analytics.speedUnknown": "暂无速度数据",
+  "analytics.hourlyHeatmap": "写作时段（近30天）",
+  "analytics.povDistribution": "视角字数分布",
+  "analytics.volumeDistribution": "按卷字数",
+  "analytics.weekTrend": "近 7 日字数",
+  "analytics.povUnassigned": "未指定视角",
+  "chapter.pov": "视角角色",
   "pomodoro.start": "开始番茄钟",
   "pomodoro.pause": "暂停",
   "pomodoro.resume": "继续",