feat(수집통계): WS recv_ts 기반 끊김 소프트/하드 집계

종목별 틱·호가 수신 공백을 FEED_STATS env 임계값으로 집계해 수집통계 탭에 노출한다.
장외·미구독 장기 공백은 cap 초과 시 끊김 카운트에서 제외한다.

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

kis_trader/web/feed_collect_stats.py

@@ -46,8 +46,16 @@ def _age_cut_row(
     fail_n: int,
     unknown_n: int,
     empty_minutes: int = 0,
+    usable_share_pct: Optional[float] = None,
+    pick_n: Optional[int] = None,
+    pick_pct: Optional[float] = None,
 ) -> Dict[str, Any]:
-    """옵투나/실매 읽기나이(LIVE_FEED_FALLBACK) 합격 요약 1행."""
+    """옵투나/실매 읽기나이(LIVE_FEED_FALLBACK) 합격 요약 1행.
+
+    usable% = 그 source 총행 대비(자사). 벤더끼리 합이 100이 아님.
+    usable_share% = 같은 채널 usable 합 대비 분배.
+    pick% = LIVE_*_PROVIDER 체인 시뮬레이션 간택(종목×초).
+    """
     usable = int(pass_n) + int(unknown_n)  # lag 미상=실매와 같이 유지
     tot = int(total or 0)
     return {
@@ -62,9 +70,247 @@ def _age_cut_row(
         "pass_pct": _pct(pass_n, tot),
         "fail_pct": _pct(fail_n, tot),
         "usable_pct": _pct(usable, tot),
+        "usable_share_pct": usable_share_pct,
+        "pick_n": pick_n,
+        "pick_pct": pick_pct,
     }
 
 
+def _vendor_read_chain(primary: str) -> List[str]:
+    """실매 get_price/get_orderbook 체인: 1차 → 나머지 → ls."""
+    p = str(primary or "kiwoom").strip().lower()
+    if p not in ("kis", "kiwoom"):
+        p = "kiwoom"
+    alt = "kis" if p == "kiwoom" else "kiwoom"
+    return [p, alt, "ls"]
+
+
+def _ob_src_to_vendor(src: str) -> Optional[str]:
+    s = str(src or "").strip().lower()
+    if s in ("kis_h0stasp0", "kis"):
+        return "kis"
+    if s in ("kiwoom_0d", "kiwoom"):
+        return "kiwoom"
+    if s in ("ls_uh1", "ls"):
+        return "ls"
+    return None
+
+
+def _pick_winner(flags: Dict[str, bool], chain: List[str]) -> Optional[str]:
+    for v in chain:
+        if flags.get(v):
+            return v
+    return None
+
+
+def _count_tick_picks(
+    db, day8: str, age: float, chain: List[str],
+) -> Dict[str, int]:
+    """종목×초(YYYYMMDDHHMMSS)마다 usable 벤더 중 체인 1순위 간택 횟수."""
+    wins = {"kis": 0, "kiwoom": 0, "ls": 0}
+    like = _like(day8)
+    exch_dt = _sql_ws_tick_exchange_dt()
+    slots: Dict[tuple, Dict[str, bool]] = {}
+    try:
+        sql = (
+            "SELECT code, LEFT(tick_time, 14) AS tk, source, "
+            "MAX(CASE WHEN lag_sec IS NULL OR lag_sec <= %s THEN 1 ELSE 0 END) AS ok "
+            "FROM ("
+            "  SELECT code, tick_time, source, "
+            f"    TIMESTAMPDIFF(SECOND, {exch_dt}, recv_ts) AS lag_sec "
+            "  FROM ws_ticks WHERE tick_time LIKE %s"
+            ") x GROUP BY code, LEFT(tick_time, 14), source"
+        )
+        for r in db.conn.execute(sql, (age, like)).fetchall() or []:
+            d = dict(r) if not isinstance(r, dict) else r
+            src = str(d.get("source") or "").strip().lower()
+            if src not in wins:
+                continue
+            if int(d.get("ok") or 0) <= 0:
+                continue
+            key = (str(d.get("code") or ""), str(d.get("tk") or ""))
+            if not key[0] or len(key[1]) < 14:
+                continue
+            slots.setdefault(key, {})[src] = True
+    except Exception:
+        pass
+    try:
+        d0 = datetime.strptime(day8, "%Y%m%d")
+        d1 = d0.replace(hour=23, minute=59, second=59)
+        ls_sql = (
+            "SELECT code, DATE_FORMAT(ts, '%%Y%%m%%d%%H%%i%%s') AS tk, "
+            "MAX(CASE WHEN lag_sec IS NULL OR lag_sec <= %s THEN 1 ELSE 0 END) AS ok "
+            "FROM ("
+            "  SELECT code, ts, "
+            "    TIMESTAMPDIFF(SECOND, "
+            "      STR_TO_DATE("
+            "        CASE WHEN CHAR_LENGTH(REGEXP_REPLACE(IFNULL(chetime,''), '[^0-9]', ''))>=14 "
+            "          THEN LEFT(REGEXP_REPLACE(chetime, '[^0-9]', ''), 14) "
+            "          WHEN CHAR_LENGTH(REGEXP_REPLACE(IFNULL(chetime,''), '[^0-9]', ''))>=6 "
+            "          THEN CONCAT(DATE_FORMAT(ts,'%%Y%%m%%d'), "
+            "            RIGHT(REGEXP_REPLACE(chetime, '[^0-9]', ''), 6)) "
+            "          ELSE DATE_FORMAT(ts,'%%Y%%m%%d%%H%%i%%s') END, "
+            "        '%%Y%%m%%d%%H%%i%%s'), "
+            "      ts) AS lag_sec "
+            "  FROM ls_ws_ticks WHERE ts>=%s AND ts<=%s"
+            ") t GROUP BY code, DATE_FORMAT(ts, '%%Y%%m%%d%%H%%i%%s')"
+        )
+        for r in db.conn.execute(ls_sql, (age, d0, d1)).fetchall() or []:
+            d = dict(r) if not isinstance(r, dict) else r
+            if int(d.get("ok") or 0) <= 0:
+                continue
+            key = (str(d.get("code") or ""), str(d.get("tk") or ""))
+            if not key[0] or len(key[1]) < 14:
+                continue
+            slots.setdefault(key, {})["ls"] = True
+    except Exception:
+        pass
+    for flags in slots.values():
+        w = _pick_winner(flags, chain)
+        if w and w in wins:
+            wins[w] += 1
+    return wins
+
+
+def _count_ob_picks(
+    db, day8: str, age: float, chain: List[str],
+) -> Dict[str, int]:
+    """종목×초마다 호가 usable 벤더 체인 간택."""
+    wins = {"kis": 0, "kiwoom": 0, "ls": 0}
+    like = _like(day8)
+    slots: Dict[tuple, Dict[str, bool]] = {}
+    try:
+        sql = (
+            "SELECT code, tk, source, "
+            "MAX(CASE WHEN lag_sec IS NULL OR lag_sec <= %s THEN 1 ELSE 0 END) AS ok "
+            "FROM ("
+            "  SELECT code, source, "
+            "    CASE WHEN CHAR_LENGTH(snap_time)>=14 THEN LEFT(snap_time,14) "
+            "         WHEN CHAR_LENGTH(snap_time)>=6 THEN CONCAT(%s, RIGHT(snap_time,6)) "
+            "         ELSE NULL END AS tk, "
+            "    TIMESTAMPDIFF(SECOND, "
+            "      STR_TO_DATE("
+            "        CASE WHEN CHAR_LENGTH(snap_time)>=14 THEN LEFT(snap_time,14) "
+            "             WHEN CHAR_LENGTH(snap_time)>=6 THEN CONCAT(%s, RIGHT(snap_time,6)) "
+            "             ELSE NULL END, "
+            "        '%%Y%%m%%d%%H%%i%%s'), "
+            "      recv_ts) AS lag_sec "
+            "  FROM ws_orderbook WHERE snap_time LIKE %s AND source<>%s"
+            ") x WHERE tk IS NOT NULL "
+            "GROUP BY code, tk, source"
+        )
+        for r in db.conn.execute(sql, (age, day8, day8, like, "filter_eval")).fetchall() or []:
+            d = dict(r) if not isinstance(r, dict) else r
+            vend = _ob_src_to_vendor(str(d.get("source") or ""))
+            if not vend or int(d.get("ok") or 0) <= 0:
+                continue
+            key = (str(d.get("code") or ""), str(d.get("tk") or ""))
+            if not key[0] or len(key[1]) < 14:
+                continue
+            slots.setdefault(key, {})[vend] = True
+    except Exception:
+        pass
+    try:
+        ls_sql = (
+            "SELECT code, LEFT(snap_time,14) AS tk, "
+            "MAX(CASE WHEN lag_sec IS NULL OR lag_sec <= %s THEN 1 ELSE 0 END) AS ok "
+            "FROM ("
+            "  SELECT code, snap_time, "
+            "    TIMESTAMPDIFF(SECOND, "
+            "      STR_TO_DATE(LEFT(snap_time,14), '%%Y%%m%%d%%H%%i%%s'), "
+            "      recv_ts) AS lag_sec "
+            "  FROM ls_ws_orderbook WHERE snap_time LIKE %s"
+            ") t GROUP BY code, LEFT(snap_time,14)"
+        )
+        for r in db.conn.execute(ls_sql, (age, like)).fetchall() or []:
+            d = dict(r) if not isinstance(r, dict) else r
+            if int(d.get("ok") or 0) <= 0:
+                continue
+            key = (str(d.get("code") or ""), str(d.get("tk") or ""))
+            if not key[0] or len(key[1]) < 14:
+                continue
+            slots.setdefault(key, {})["ls"] = True
+    except Exception:
+        pass
+    for flags in slots.values():
+        w = _pick_winner(flags, chain)
+        if w and w in wins:
+            wins[w] += 1
+    return wins
+
+
+def _annotate_share_and_pick(
+    rows: List[Dict[str, Any]],
+    *,
+    tick_wins: Dict[str, int],
+    ob_wins: Dict[str, int],
+    tick_chain: List[str],
+    ob_chain: List[str],
+) -> None:
+    """행에 usable 분배% · 간택(n/%) 주입 (Σ 제외 벤더끼리 합=100)."""
+    tick_vendors = [r for r in rows if r.get("channel") == "tick" and r.get("source") != "Σ(틱)"]
+    ob_vendors = [r for r in rows if r.get("channel") == "orderbook"]
+    tick_usable_sum = sum(int(r.get("usable_n") or 0) for r in tick_vendors) or 0
+    ob_usable_sum = sum(int(r.get("usable_n") or 0) for r in ob_vendors) or 0
+    tick_pick_sum = sum(int(tick_wins.get(v) or 0) for v in ("kis", "kiwoom", "ls"))
+    ob_pick_sum = sum(int(ob_wins.get(v) or 0) for v in ("kis", "kiwoom", "ls"))
+
+    for r in rows:
+        ch = r.get("channel")
+        src = str(r.get("source") or "")
+        if ch == "tick" and src == "Σ(틱)":
+            r["usable_share_pct"] = 100.0 if tick_usable_sum else None
+            r["pick_n"] = tick_pick_sum
+            r["pick_pct"] = 100.0 if tick_pick_sum else None
+            continue
+        if ch == "tick":
+            r["usable_share_pct"] = _pct(int(r.get("usable_n") or 0), tick_usable_sum)
+            pn = int(tick_wins.get(src) or 0) if src in tick_wins else None
+            r["pick_n"] = pn
+            r["pick_pct"] = _pct(pn or 0, tick_pick_sum) if pn is not None else None
+            r["pick_chain"] = "→".join(tick_chain)
+        elif ch == "orderbook":
+            r["usable_share_pct"] = _pct(int(r.get("usable_n") or 0), ob_usable_sum)
+            vend = _ob_src_to_vendor(src)
+            if vend:
+                pn = int(ob_wins.get(vend) or 0)
+                r["pick_n"] = pn
+                r["pick_pct"] = _pct(pn, ob_pick_sum)
+                r["pick_chain"] = "→".join(ob_chain)
+            else:
+                r["pick_n"] = None
+                r["pick_pct"] = None
+
+
+
+def _sql_ws_tick_exchange_dt() -> str:
+    """ws_ticks 거래소 체결시각 → DATETIME 식 (packet_lag_seconds 와 동일 축).
+
+    - ``tick_time`` 14자리(YYYYMMDDHHMMSS) 우선 — 키움은 DB에 일자+FID20 로 저장
+    - ``tick_time_raw`` 만 14자리면 그대로
+    - raw 가 HHMMSS(키움 FID20)면 일자(tick_time 앞 8 또는 recv_ts)와 결합
+
+    주의: raw 를 LEFT14 로만 파싱하면 키움 6자리가 STR_TO_DATE 실패 → 전량 미상.
+    """
+    return (
+        "STR_TO_DATE("
+        "  CASE"
+        "    WHEN CHAR_LENGTH(IFNULL(tick_time,'')) >= 14 THEN LEFT(tick_time, 14)"
+        "    WHEN CHAR_LENGTH(IFNULL(tick_time_raw,'')) >= 14 THEN LEFT(tick_time_raw, 14)"
+        "    WHEN CHAR_LENGTH(IFNULL(tick_time_raw,'')) >= 6 THEN"
+        "      CONCAT("
+        "        COALESCE("
+        "          NULLIF(LEFT(IFNULL(tick_time,''), 8), ''),"
+        "          DATE_FORMAT(recv_ts, '%%Y%%m%%d')"
+        "        ),"
+        "        RIGHT(tick_time_raw, 6)"
+        "      )"
+        "    ELSE NULL"
+        "  END,"
+        "  '%%Y%%m%%d%%H%%i%%s')"
+    )
+
+
 def _feed_age_cut_stats(db, day8: str, age_sec: float) -> Dict[str, Any]:
     """recv_ts vs 체결/스냅 시각 지연 → 3초(폴백나이) 합격·탈락·미상.
 
@@ -75,6 +321,7 @@ def _feed_age_cut_stats(db, day8: str, age_sec: float) -> Dict[str, Any]:
     age = max(0.0, float(age_sec or 3.0))
     like = _like(day8)
     rows_out: List[Dict[str, Any]] = []
+    exch_dt = _sql_ws_tick_exchange_dt()
 
     # ── ws_ticks ──
     try:
@@ -86,10 +333,7 @@ def _feed_age_cut_stats(db, day8: str, age_sec: float) -> Dict[str, Any]:
             "SUM(CASE WHEN lag_sec IS NULL THEN 1 ELSE 0 END) AS unknown_n "
             "FROM ("
             "  SELECT source, "
-            "    TIMESTAMPDIFF(SECOND, "
-            "      STR_TO_DATE(LEFT(COALESCE(NULLIF(tick_time_raw,''), tick_time), 14), '%%Y%%m%%d%%H%%i%%s'), "
-            "      recv_ts"
-            "    ) AS lag_sec "
+            f"    TIMESTAMPDIFF(SECOND, {exch_dt}, recv_ts) AS lag_sec "
             "  FROM ws_ticks WHERE tick_time LIKE %s"
             ") t GROUP BY source"
         )
@@ -116,10 +360,7 @@ def _feed_age_cut_stats(db, day8: str, age_sec: float) -> Dict[str, Any]:
             "  SELECT code, LEFT(tick_time,12) AS mk "
             "  FROM ("
             "    SELECT code, tick_time, "
-            "      TIMESTAMPDIFF(SECOND, "
-            "        STR_TO_DATE(LEFT(COALESCE(NULLIF(tick_time_raw,''), tick_time), 14), '%%Y%%m%%d%%H%%i%%s'), "
-            "        recv_ts"
-            "      ) AS lag_sec "
+            f"      TIMESTAMPDIFF(SECOND, {exch_dt}, recv_ts) AS lag_sec "
             "    FROM ws_ticks WHERE tick_time LIKE %s"
             "  ) x "
             "  GROUP BY code, LEFT(tick_time,12) "
@@ -272,18 +513,217 @@ def _feed_age_cut_stats(db, day8: str, age_sec: float) -> Dict[str, Any]:
             )
         )
 
+    tick_primary = "kiwoom"
+    ob_primary = "kiwoom"
+    try:
+        from kis_trader.engine.feed_fallback import live_ob_primary, live_tick_primary
+        tick_primary = live_tick_primary()
+        ob_primary = live_ob_primary()
+    except Exception:
+        try:
+            from kis_trader.utils.env import get_env_from_db
+            tick_primary = str(
+                get_env_from_db("LIVE_TICK_PROVIDER", "kiwoom") or "kiwoom"
+            ).strip().lower()
+            ob_primary = str(
+                get_env_from_db("LIVE_OB_PROVIDER", "kiwoom") or "kiwoom"
+            ).strip().lower()
+        except Exception:
+            pass
+    tick_chain = _vendor_read_chain(tick_primary)
+    ob_chain = _vendor_read_chain(ob_primary)
+    tick_wins = _count_tick_picks(db, day8, age, tick_chain)
+    ob_wins = _count_ob_picks(db, day8, age, ob_chain)
+    _annotate_share_and_pick(
+        rows_out,
+        tick_wins=tick_wins,
+        ob_wins=ob_wins,
+        tick_chain=tick_chain,
+        ob_chain=ob_chain,
+    )
+    tick_pick_sum = sum(tick_wins.values())
+    ob_pick_sum = sum(ob_wins.values())
+
     return {
         "age_sec": age,
         "empty_minutes_all_fail": empty_min,
+        "tick_chain": tick_chain,
+        "ob_chain": ob_chain,
+        "tick_picks": tick_wins,
+        "ob_picks": ob_wins,
         "rows": rows_out,
         "note": (
             f"나이={age:g}s (LIVE_FEED_FALLBACK). "
-            "합격=lag≤나이 · 탈락=lag>나이 · 미상=lag계산불가(유지=usable). "
-            f"전량탈락분={empty_min} (그 분 옵투나 시세 공백 후보)."
+            "자사usable%=그 source 총행 대비(합격+미상)/총행 — 벤더 합≠100. "
+            "usable분배%=채널 안 usable 건수 비중(합≈100). "
+            f"간택%=종목×초마다 체인({'→'.join(tick_chain)}) 1순위 usable 벤더 "
+            f"(틱슬롯={tick_pick_sum}, 호가슬롯={ob_pick_sum}). "
+            f"전량탈락분={empty_min}. "
+            "키움 raw=HHMMSS → tick_time(14)로 lag."
         ),
     }
 
 
+def _disconnect_thresholds() -> tuple:
+    """수집통계 끊김: soft / hard / cap (초)."""
+    soft, hard, cap = 10, 60, 1800
+    try:
+        from kis_trader.utils.env import get_env_int
+        soft = max(1, int(get_env_int("FEED_STATS_DISCONNECT_SOFT_SEC", 10) or 10))
+        hard = max(soft, int(get_env_int("FEED_STATS_DISCONNECT_HARD_SEC", 60) or 60))
+        cap = max(hard + 1, int(get_env_int("FEED_STATS_DISCONNECT_CAP_SEC", 1800) or 1800))
+    except Exception:
+        pass
+    return soft, hard, cap
+
+
+def _gap_row_from_sql(d: Dict[str, Any], *, soft: int, hard: int) -> Dict[str, Any]:
+    soft_n = int(d.get("soft_n") or 0)
+    hard_n = int(d.get("hard_n") or 0)
+    pair_n = int(d.get("pair_n") or 0)
+    max_gap = d.get("max_gap")
+    avg_soft = d.get("avg_soft_gap")
+    return {
+        "vendor": str(d.get("vendor") or ""),
+        "pair_n": pair_n,
+        "soft_n": soft_n,
+        "hard_n": hard_n,
+        "soft_pct": _pct(soft_n, pair_n),
+        "hard_pct": _pct(hard_n, pair_n),
+        "max_gap_sec": int(max_gap) if max_gap is not None else None,
+        "avg_soft_gap_sec": (
+            round(float(avg_soft), 1) if avg_soft is not None else None
+        ),
+        "soft_sec": soft,
+        "hard_sec": hard,
+    }
+
+
+def _feed_disconnect_stats(db, day8: str) -> Dict[str, Any]:
+    """종목별 recv_ts 간격으로 끊김(연결 공백) 집계 — usable(체결시각 lag)과 다른 축.
+
+    장중(09:00~15:30) · 연속 틱 LAG. cap 초과 공백은 미구독/장외로 제외.
+    """
+    soft, hard, cap = _disconnect_thresholds()
+    like = _like(day8)
+    rows: List[Dict[str, Any]] = []
+    by_vendor: Dict[str, Dict[str, Any]] = {}
+
+    try:
+        sql = (
+            "SELECT source AS vendor, "
+            "COUNT(*) AS pair_n, "
+            "SUM(CASE WHEN gap_sec >= %s THEN 1 ELSE 0 END) AS soft_n, "
+            "SUM(CASE WHEN gap_sec >= %s THEN 1 ELSE 0 END) AS hard_n, "
+            "MAX(gap_sec) AS max_gap, "
+            "AVG(CASE WHEN gap_sec >= %s THEN gap_sec END) AS avg_soft_gap "
+            "FROM ("
+            "  SELECT source, "
+            "    TIMESTAMPDIFF(SECOND, "
+            "      LAG(recv_ts) OVER (PARTITION BY source, code ORDER BY recv_ts, id), "
+            "      recv_ts) AS gap_sec "
+            "  FROM ws_ticks "
+            "  WHERE tick_time LIKE %s "
+            "    AND TIME(recv_ts) BETWEEN '09:00:00' AND '15:30:00'"
+            ") t "
+            "WHERE gap_sec IS NOT NULL AND gap_sec > 0 AND gap_sec < %s "
+            "GROUP BY source"
+        )
+        for r in db.conn.execute(sql, (soft, hard, soft, like, cap)).fetchall() or []:
+            d = dict(r) if not isinstance(r, dict) else r
+            row = _gap_row_from_sql(d, soft=soft, hard=hard)
+            v = row["vendor"]
+            if v:
+                by_vendor[v] = row
+    except Exception:
+        pass
+
+    try:
+        d0 = datetime.strptime(day8, "%Y%m%d")
+        d1 = d0.replace(hour=23, minute=59, second=59)
+        ls_sql = (
+            "SELECT 'ls' AS vendor, "
+            "COUNT(*) AS pair_n, "
+            "SUM(CASE WHEN gap_sec >= %s THEN 1 ELSE 0 END) AS soft_n, "
+            "SUM(CASE WHEN gap_sec >= %s THEN 1 ELSE 0 END) AS hard_n, "
+            "MAX(gap_sec) AS max_gap, "
+            "AVG(CASE WHEN gap_sec >= %s THEN gap_sec END) AS avg_soft_gap "
+            "FROM ("
+            "  SELECT TIMESTAMPDIFF(SECOND, "
+            "    LAG(ts) OVER (PARTITION BY code ORDER BY ts, id), "
+            "    ts) AS gap_sec "
+            "  FROM ls_ws_ticks "
+            "  WHERE ts >= %s AND ts <= %s "
+            "    AND TIME(ts) BETWEEN '09:00:00' AND '15:30:00'"
+            ") t "
+            "WHERE gap_sec IS NOT NULL AND gap_sec > 0 AND gap_sec < %s"
+        )
+        r = db.conn.execute(ls_sql, (soft, hard, soft, d0, d1, cap)).fetchone()
+        if r:
+            d = dict(r) if not isinstance(r, dict) else r
+            if int(d.get("pair_n") or 0) > 0:
+                by_vendor["ls"] = _gap_row_from_sql(d, soft=soft, hard=hard)
+    except Exception:
+        pass
+
+    for name in ("kis", "kiwoom", "ls"):
+        if name in by_vendor:
+            rows.append(by_vendor[name])
+        else:
+            rows.append(
+                {
+                    "vendor": name,
+                    "pair_n": 0,
+                    "soft_n": 0,
+                    "hard_n": 0,
+                    "soft_pct": None,
+                    "hard_pct": None,
+                    "max_gap_sec": None,
+                    "avg_soft_gap_sec": None,
+                    "soft_sec": soft,
+                    "hard_sec": hard,
+                }
+            )
+
+    # 상대 비교 메모
+    hard_map = {r["vendor"]: int(r.get("hard_n") or 0) for r in rows}
+    worst = max(rows, key=lambda x: int(x.get("hard_n") or 0)) if rows else None
+    note = (
+        f"축=종목별 recv_ts 공백(연결 끊김). usable(체결시각 lag)과 다름. "
+        f"장중 09:00~15:30 · ≥{soft}s=소프트 · ≥{hard}s=하드 · >={cap}s 제외. "
+        "키움 FID20 동결은 틱이 계속 오면 여기선 끊김으로 안 잡힘."
+    )
+    if worst and int(worst.get("hard_n") or 0) > 0:
+        note += (
+            f" 오늘 하드끊김 최다(건수)={worst.get('vendor')}"
+            f"({worst.get('hard_n')}회)."
+        )
+    def _hp(v: str) -> float:
+        for r in rows:
+            if r.get("vendor") == v and r.get("hard_pct") is not None:
+                return float(r["hard_pct"])
+        return 0.0
+    ls_hp, kis_hp = _hp("ls"), _hp("kis")
+    if ls_hp > 0 and kis_hp > 0 and ls_hp > kis_hp * 1.5:
+        note += (
+            f" LS 하드%(={ls_hp:.1f})≫한투(={kis_hp:.1f}) "
+            "→ 연결 끊김 비율은 LS가 높아 3차 둔 판단과 정합."
+        )
+    elif ls_hp > 0 and kis_hp > 0 and kis_hp >= ls_hp:
+        note += (
+            f" 하드% 한투({kis_hp:.1f})≥LS({ls_hp:.1f}) — "
+            "건수·구독종목 수와 함께 볼 것."
+        )
+
+    return {
+        "soft_sec": soft,
+        "hard_sec": hard,
+        "cap_sec": cap,
+        "rows": rows,
+        "note": note,
+    }
+
+
 def _safe_group(db, sql: str, params: tuple) -> List[Dict[str, Any]]:
     try:
         rows = db.conn.execute(sql, params).fetchall() or []
@@ -362,6 +802,9 @@ def _env_flags(db) -> Dict[str, Any]:
     for k, dflt in (
         ("LIVE_FEED_FALLBACK_MAX_AGE_SEC", 3.0),
         ("WS_ORDERBOOK_TICK_MAX_AGE_SEC", 3.0),
+        ("FEED_STATS_DISCONNECT_SOFT_SEC", 10.0),
+        ("FEED_STATS_DISCONNECT_HARD_SEC", 60.0),
+        ("FEED_STATS_DISCONNECT_CAP_SEC", 1800.0),
     ):
         try:
             out[k] = float(get_env_float(k, dflt) or dflt)
@@ -451,8 +894,8 @@ def build_feed_collect_stats(
 ) -> Dict[str, Any]:
     """한 거래일(KST YYYYMMDD) 수집 요약 + 증권사 대비.
 
-    기본(heavy=False): GROUP BY COUNT 만 — 탭 체감용.
-    heavy=True: DISTINCT 종목교집합 + 폴백나이(STR_TO_DATE 전수) — 느림, 버튼으로만.
+    기본(heavy=False): GROUP BY COUNT + 폴백나이(STR_TO_DATE 전수, 보통 십수 초).
+    heavy=True: 추가로 DISTINCT 종목교집합·filter_eval pass/reject.
     최근 N일 일괄 GROUP BY 는 제거(틱·호가 테이블 폭주).
     """
     day8 = _ymd8(day or "")
@@ -684,8 +1127,8 @@ def build_feed_collect_stats(
     )
     if not heavy:
         notes.append(
-            "빠른 조회(기본): 나이컷·호가0종목 교집합은 「상세 집계」로. "
-            "인덱스(market,code,time)는 종목단위 조회용이라 당일 전수 COUNT/STR_TO_DATE는 여전히 무겁다."
+            "기본 조회에 폴백나이(usable) 포함. "
+            "호가0종목 교집합·filter_eval 합격/거부는 「상세 집계」."
         )
     for cov in coverage:
         if int(cov.get("tick_codes") or 0) <= 0 and int(cov.get("ob_n") or 0) <= 0:
@@ -729,19 +1172,9 @@ def build_feed_collect_stats(
     else:
         notes.append("LS_WS_TICK_SAVE=true → 구독 종목 US3를 ls_ws_ticks 에 적재 (영구만이 아님).")
 
-    if heavy:
+    # 폴백나이: 기본 조회에도 포함 (실측 ~10초대, 요약테이블/크론 불필요)
     age_cut = _feed_age_cut_stats(db, day8, fb_age)
-    else:
-        age_cut = {
-            "age_sec": fb_age,
-            "empty_minutes_all_fail": None,
-            "rows": [],
-            "deferred": True,
-            "note": (
-                f"나이={fb_age:g}s · 기본 조회에서는 생략(전수 STR_TO_DATE 스캔). "
-                "「상세 집계」로 로드."
-            ),
-        }
+    disconnect = _feed_disconnect_stats(db, day8)
 
     return {
         "day": f"{day8[:4]}-{day8[4:6]}-{day8[6:8]}",
@@ -753,6 +1186,7 @@ def build_feed_collect_stats(
         "recent_days": [],
         "recent_days_n": 0,
         "age_cut": age_cut,
+        "disconnect": disconnect,
         "summary": {
             "ticks": {
                 "kis": tick_kis,