Improve stat-cache-hitrate UX and normalize Total Running metric

fastdeploy/golang_router/.claude/skills/stat-cache-hitrate/SKILL.md

@@ -23,10 +23,9 @@ IMPORTANT: 执行前阅读 references/log_formats.md 了解日志格式和解析
 运行脚本前，Claude 必须先向用户确认以下参数：
 
 ### 1. 日志文件路径
-使用 AskUserQuestion 工具向用户询问日志文件路径。提供两个常用快捷选项 + Other 自定义输入（支持绝对路径和相对路径）：
+使用 AskUserQuestion 工具向用户询问日志文件路径。提供两个常用快捷选项（客户端会自动提供 Other 自定义输入）：
 - 选项 1: `logs/router.log`（默认）
 - 选项 2: `fd-router.log`（golang_router 根目录常用文件名）
-- 选项 3: Other（用户直接输入任意路径，例如 `logs/fd-router.log`、`/home/user/logs/router.log`）
 
 **重要规则**：
 - 如果用户已经在消息中明确指定了日志路径，直接使用该路径，跳过询问步骤
@@ -95,7 +94,7 @@ python3 .claude/skills/stat-cache-hitrate/scripts/stat_cache_hitrate.py <日志
 
 - 主报告 `cache_hitrate_report_*.md` — Per-Worker 统计 + Fallback 明细
 - `details/per_window_data.md` — 每5s窗口明细（连续空窗口自动合并为 3 行：起始/合并说明/结束）
-- `details/session_hit_details.md` — 每个 session 的命中明细（`session / req_count / first_hit / avg_hit(excl_first) / max_hit / min_hit / all_hits`），并附带 `prefill_urls`、prefill URL 切换前后 request_id（或 req_id/trace_id）以及命中率突降 request_id
+- `details/session_hit_details.md` — 每个 session 的命中明细（TSV 单行格式，便于横向滚动查看），包含 `session / req_count / first_hit / avg_hit(excl_first) / max_hit / min_hit / all_hits / prefill_urls / switch_req_pairs / sharp_drop_request_ids`
 
 ### 交叉诊断矩阵
 

fastdeploy/golang_router/.claude/skills/stat-cache-hitrate/scripts/stat_cache_hitrate.py

@@ -48,6 +48,28 @@ def _build_path_links(path):
     file_uri = "file://" + quote(abs_path, safe="/:-._~")
     return abs_path, file_uri
 
+
+def _format_half_running(total_running):
+    """将 stats.total_running 归一化为 prefill 口径（decode+prefill 合计 / 2）。"""
+    normalized = total_running / 2
+    if float(normalized).is_integer():
+        return str(int(normalized))
+    return f"{normalized:.1f}"
+
+
+def _render_scrollable_tsv(data, columns):
+    """渲染单行 TSV 文本，适合在 Markdown 查看器里横向滚动。"""
+    if not data:
+        return "```tsv\n(no data)\n```"
+
+    def _escape(v):
+        return str(v).replace("\t", " ").replace("\n", "\\n")
+
+    lines = ["\t".join(columns)]
+    for row in data:
+        lines.append("\t".join(_escape(row.get(col, "")) for col in columns))
+    return "```tsv\n" + "\n".join(lines) + "\n```"
+
 # ════════════════════════════════════════════════════════════════
 # Phase 1: 日志读取
 # ════════════════════════════════════════════════════════════════
@@ -461,8 +483,8 @@ def format_full_report(filepath, line_count, prefix_hr, session_hr, per_worker,
         parts.append(
             render_table(
                 window_rows[:10],
-                columns=["Time", "Prefix HR", "Session HR", "Scoring", "Fallback", "Total Running"],
-                right_align={"Scoring", "Fallback", "Total Running"},
+                columns=["Time", "Prefix HR", "Session HR", "Scoring", "Fallback", "Total Running (prefill≈stats/2)"],
+                right_align={"Scoring", "Fallback", "Total Running (prefill≈stats/2)"},
             )
         )
 
@@ -542,15 +564,15 @@ def build_per_window_rows(strategies, stats_recs):
         else:
             session_hr = "-"
 
-        running = str(d["running"]) if d["has_running"] else "-"
+        running = _format_half_running(d["running"]) if d["has_running"] else "-"
         rows.append(
             {
                 "Time": short_ts,
                 "Prefix HR": prefix_hr,
                 "Session HR": session_hr,
                 "Scoring": str(d["scoring"]),
                 "Fallback": str(d["fallback"]),
-                "Total Running": running,
+                "Total Running (prefill≈stats/2)": running,
             }
         )
     return rows
@@ -686,8 +708,8 @@ def save_detailed_report(
         detail_parts.append(
             render_table(
                 window_rows_merged,
-                columns=["Time", "Prefix HR", "Session HR", "Scoring", "Fallback", "Total Running"],
-                right_align={"Scoring", "Fallback", "Total Running"},
+                columns=["Time", "Prefix HR", "Session HR", "Scoring", "Fallback", "Total Running (prefill≈stats/2)"],
+                right_align={"Scoring", "Fallback", "Total Running (prefill≈stats/2)"},
             )
         )
         detail_parts.append("")
@@ -720,27 +742,22 @@ def save_detailed_report(
                 f' (N={session_summary["non_first_total"]})'
             )
             session_parts.append("")
-            session_parts.append("## 明细表")
-            session_parts.append(
-                render_table(
-                    session_rows,
-                    columns=[
-                        "session",
-                        "req_count",
-                        "first_hit",
-                        "avg_hit(excl_first)",
-                        "max_hit",
-                        "min_hit",
-                        "all_hits",
-                        "prefill_urls",
-                        "switch_req_pairs",
-                        "sharp_drop_request_ids",
-                        "sticky",
-                        "unique_workers",
-                    ],
-                    right_align={"req_count", "first_hit", "avg_hit(excl_first)", "max_hit", "min_hit", "unique_workers"},
-                )
-            )
+            session_columns = [
+                "session",
+                "req_count",
+                "first_hit",
+                "avg_hit(excl_first)",
+                "max_hit",
+                "min_hit",
+                "all_hits",
+                "prefill_urls",
+                "switch_req_pairs",
+                "sharp_drop_request_ids",
+                "sticky",
+                "unique_workers",
+            ]
+            session_parts.append("## 明细（单行 TSV，可横向滚动）")
+            session_parts.append(_render_scrollable_tsv(session_rows, session_columns))
             session_parts.append("")
 
             session_path = os.path.join(details_dir, "session_hit_details.md")

fastdeploy/golang_router/.claude/skills/stat-cache-hitrate/scripts/window_utils.py

@@ -3,6 +3,8 @@
 窗口明细压缩工具：合并连续空窗口，降低 per_window_data.md 噪声。
 """
 
+RUNNING_COL = "Total Running (prefill≈stats/2)"
+
 
 def _is_blank_window_row(row):
     """判断是否为空窗口（无 Prefix/Session 明细值）。"""
@@ -52,7 +54,7 @@ def merge_blank_window_rows(rows, min_merge_len=5):
                 "Session HR": "-",
                 "Scoring": "0",
                 "Fallback": "0",
-                "Total Running": rows[i].get("Total Running", "-"),
+                RUNNING_COL: rows[i].get(RUNNING_COL, "-"),
             }
         )
         merged.append(
@@ -62,7 +64,7 @@ def merge_blank_window_rows(rows, min_merge_len=5):
                 "Session HR": f"merged {seg_len} windows",
                 "Scoring": "0",
                 "Fallback": "0",
-                "Total Running": "-",
+                RUNNING_COL: "-",
             }
         )
         merged.append(
@@ -72,7 +74,7 @@ def merge_blank_window_rows(rows, min_merge_len=5):
                 "Session HR": "-",
                 "Scoring": "0",
                 "Fallback": "0",
-                "Total Running": rows[j - 1].get("Total Running", "-"),
+                RUNNING_COL: rows[j - 1].get(RUNNING_COL, "-"),
             }
         )
         i = j