docs(log): translate SKILL.md into English per guidelines

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

skills/stats/SKILL.md

@@ -3,19 +3,19 @@ name: stats
 description: Report usage counts of every jsc skill and every skill call chain, aggregated by tools/usage-stats.sh from $JSC_HOME/usage/*.jsonl recorded by jsc-hooks. Supports --cli filtering. Use when the user asks how often skills or chains are used; not for token or time stats (see worklog).
 ---
 
-# stats — 技能與呼叫鏈使用統計
+# stats — skill and call-chain usage counts
 
-資料由 `jsc-hooks/hooks/skill-usage.sh` 持續記錄在 `$JSC_HOME/usage/`（預設 `~/.jsc/usage/`）。
+Data is recorded continuously by `jsc-hooks/hooks/skill-usage.sh` under `$JSC_HOME/usage/` (default `~/.jsc/usage/`).
 
-## 操作
+## Operations
 
-| 統計 | 指令 | 輸出 |
+| Count | Command | Output |
 | --- | --- | --- |
-| 各技能使用次數 | `tools/usage-stats.sh skills` | `次數<TAB>技能名`，降冪 |
-| 各呼叫鏈使用次數 | `tools/usage-stats.sh chains` | `次數<TAB>from -> to`，降冪 |
-| 依 CLI 過濾 | 加 `--cli claude`（或 codex / copilot / antigravity / kiro） | 同上 |
+| Uses per skill | `tools/usage-stats.sh skills` | `count<TAB>skill`, descending |
+| Uses per call chain | `tools/usage-stats.sh chains` | `count<TAB>from -> to`, descending |
+| Filter by CLI | Append `--cli claude` (or codex / copilot / antigravity / kiro) | Same as above |
 
-## 呈現
+## Reporting
 
-1. 直接執行工具，把輸出整理成表格回覆。
-2. 沒有資料時說明：需先安裝 `jsc-hooks` 並執行 `jsc-hooks:hooks-install` 接線。
+1. Run the tool directly and present the output as a table.
+2. When there is no data, explain that `jsc-hooks` must be installed and wired first via `jsc-hooks:hooks-install`.