feedback7: merge fb7-stats — the local statistics page (PR #323 by @2321Robin, reworked): a match counts when it reached its result or the player cleared at least one round before quitting; earlier quits stay in the history marked 中途退出 / 不计入统计 (the owner's rule of 2026-10-08)

- Conflict: docs/PLAYING.md — #321's §12 反馈问题 and the stats §12 both added; the stats section is §13 (README anchor
  updated).
- Golden unchanged; broad node --test 5382 (5381 pass, 0 fail, 1 skipped); lint 0 errors.

public/i18n/en.json

@@ -1068,5 +1068,67 @@
   "选择「{name}」的朝向": "Choose {name}'s facing",
   "选择朝向": "Choose a facing",
   "朝向：{dir}": "Facing: {dir}",
-  "开发版 · 不稳定，请勿用于公开服务器": "Development build · unstable, not for public servers"
+  "开发版 · 不稳定，请勿用于公开服务器": "Development build · unstable, not for public servers",
+  "统计数据": "Statistics",
+  "统计": "Stats",
+  "总览": "Overview",
+  "总局数": "Games",
+  "胜场": "Wins",
+  "胜率": "Win rate",
+  "到达隐秘核心": "Hidden Core reached",
+  "通关隐秘核心": "Hidden Core cleared",
+  "最远回合": "Best round",
+  "累计时长": "Time played",
+  "{n} 分": "{n} min",
+  "难度": "Difficulty",
+  "局数": "Games",
+  "隐秘核心通关": "Hidden Core clears",
+  "使用局数": "Used",
+  "通过局数": "Cleared",
+  "通过率": "Clear rate",
+  "称号": "Titles",
+  "战斗累计": "Combat totals",
+  "时间": "Time",
+  "模式": "Mode",
+  "结果": "Result",
+  "点击查看该局结算": "View this match's settlement",
+  "单人": "Solo",
+  "同盟": "Co-op",
+  "胜": "Win",
+  "负": "Loss",
+  "已导出 {n} 条对局记录": "Exported {n} match {n|record|records}",
+  "已导入 {added} 条记录{tail}": "Imported {added} {added|record|records}{tail}",
+  "（跳过重复 {skipped} 条）": " ({skipped} {skipped|duplicate|duplicates} skipped)",
+  "没有新记录（全部与现有数据重复）": "Nothing new (everything already exists)",
+  "导入失败：不是有效的统计导出文件": "Import failed: not a valid stats export file",
+  "已清空本机统计数据": "Local stats cleared",
+  "本机数据 · 仅记录本浏览器中你参与的对局": "Local data · only matches you took part in, in this browser",
+  "检测到更新版本的统计数据，请先升级客户端再查看，以免覆盖数据。": "Stats data from a newer version detected — upgrade the client before viewing, or the data could be overwritten.",
+  "还没有记录 —— 完成一局对局后，这里会开始积累。": "No records yet — finish a match and the page starts filling in.",
+  "未知": "Unknown",
+  "对局记录": "Match history",
+  "{n} 小时": "{n} h",
+  "计入统计：打到结算的对局，以及中途退出前至少清完 1 个回合的对局；更早退出的对局只留在对局记录里。": "Counted: matches played to the settlement, and matches given up after clearing at least 1 round. Matches given up earlier stay in the match history only.",
+  "另有 {n} 局未计入统计": "{n} more {n|match|matches} not counted",
+  "没有清完第一个回合就退出，不计入统计": "Left before clearing the first round — not counted",
+  "中途退出的对局没有结算可看": "A match given up has no settlement to view",
+  "较早的对局只保留汇总，不能回看结算": "Older matches keep only their summary — no settlement to view",
+  "中途退出": "Left early",
+  "不计入统计": "Not counted",
+  "显示更多（还有 {n} 局）": "Show more ({n} left)",
+  "点击一行，回看该局结算；中途退出的对局只留记录。": "Click a row to re-view that match's settlement; a match given up only leaves its entry.",
+  "最多保留最近 {max} 局，只有最新的 {full} 局能回看结算。": "Only the latest {max} matches are kept, and only the newest {full} can show their settlement again.",
+  "返回统计": "Back to Stats",
+  "文件过大，无法导入": "File too large to import",
+  "无法写入本机存储，可能已满": "Could not write to local storage — it may be full",
+  "（{n} 条无法读取）": " ({n} unreadable)",
+  "导入失败：这份文件由更新版本的客户端导出，请先升级客户端": "Import failed: this file was exported by a newer client — upgrade the client first",
+  "清空统计数据": "Clear Statistics",
+  "将删除本机保存的 {n} 条对局记录，无法恢复。": "This deletes the {n} match {n|record|records} stored on this device. It cannot be undone.",
+  "导出为文件（可在别的设备上导入）": "Export to a file (import it on another device)",
+  "从导出的文件导入（与现有记录合并）": "Import from an exported file (merged with the current records)",
+  "清空本机的统计数据": "Clear the statistics stored on this device",
+  "本机数据：只保存在这个浏览器里，不会上传到服务器；同盟对局里队友的代号也会存在本机（导出文件里也有）。": "Local data: kept only in this browser, never uploaded to the server. Teammates' names from Team Simulations are stored here too (and appear in an export file).",
+  "本机保存的统计数据无法读取，已另存为备份，从现在起重新记录。": "The stats stored on this device could not be read. They were set aside as a backup and recording starts afresh.",
+  "有 {n} 条记录已损坏，已忽略。": "{n} damaged {n|record was|records were} ignored."
 }