diff --git a/crypto_monitor_binance/app.py b/crypto_monitor_binance/app.py
index 371a2f3..575292e 100644
--- a/crypto_monitor_binance/app.py
+++ b/crypto_monitor_binance/app.py
@@ -1857,7 +1857,7 @@ def _compute_period_metrics(trades):
     }
 
 
-def compute_stats_bundle(conn, trading_day, now_dt=None):
+def compute_stats_bundle(conn, trading_day, now_dt=None, *, with_calendar=False):
     """日 / 周 / 月 统计：平仓按北京时间交易日（默认 8:00 切日）计入。"""
     now_dt = now_dt or app_now()
     pnls = _load_completed_trade_pnls(conn)
@@ -1888,11 +1888,14 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
 
     dm, wm, mm = slice_metrics("all")
 
-    from trade_stats_calendar_lib import build_initial_stats_calendar
+    initial_calendar = None
+    calendar_bootstrap_json = None
+    if with_calendar:
+        from trade_stats_calendar_lib import build_stats_calendar_bootstrap
 
-    initial_calendar = build_initial_stats_calendar(
-        pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
-    )
+        initial_calendar, calendar_bootstrap_json = build_stats_calendar_bootstrap(
+            pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
+        )
 
     return {
         "trading_day": trading_day,
@@ -1903,6 +1906,7 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
         "segments": segments,
         "stats_reset_hour": TRADING_DAY_RESET_HOUR,
         "initial_calendar": initial_calendar,
+        "calendar_bootstrap_json": calendar_bootstrap_json,
     }
 
 
@@ -7040,7 +7044,7 @@ def render_main_page(page="trade", embed_mode=None):
         else []
     )
     stats_bundle = (
-        compute_stats_bundle(conn, trading_day, now)
+        compute_stats_bundle(conn, trading_day, now, with_calendar=(page == "stats"))
         if plan.stats_bundle
         else minimal_stats_bundle(TRADING_DAY_RESET_HOUR)
     )
diff --git a/crypto_monitor_binance/templates/index.html b/crypto_monitor_binance/templates/index.html
index db01ef8..0bc5ff8 100644
--- a/crypto_monitor_binance/templates/index.html
+++ b/crypto_monitor_binance/templates/index.html
@@ -807,8 +807,8 @@
                     </select>
                 </label>
             </div>
-            {% if stats_bundle.initial_calendar %}
-            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.initial_calendar | tojson }}</script>
+            {% if stats_bundle.calendar_bootstrap_json %}
+            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.calendar_bootstrap_json | safe }}</script>
             {% endif %}
             <div id="stats-calendar-wrap" class="trade-cal-wrap stats-calendar-wrap">
                 <div class="trade-cal-head">
diff --git a/crypto_monitor_gate/app.py b/crypto_monitor_gate/app.py
index 1c6257c..299d9e8 100644
--- a/crypto_monitor_gate/app.py
+++ b/crypto_monitor_gate/app.py
@@ -1846,7 +1846,7 @@ def _compute_period_metrics(trades):
     }
 
 
-def compute_stats_bundle(conn, trading_day, now_dt=None):
+def compute_stats_bundle(conn, trading_day, now_dt=None, *, with_calendar=False):
     """日 / 周 / 月 统计：平仓按北京时间交易日（默认 8:00 切日）计入。"""
     now_dt = now_dt or app_now()
     pnls = _load_completed_trade_pnls(conn)
@@ -1883,11 +1883,14 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
 
     dm, wm, mm = slice_metrics("all")
 
-    from trade_stats_calendar_lib import build_initial_stats_calendar
+    initial_calendar = None
+    calendar_bootstrap_json = None
+    if with_calendar:
+        from trade_stats_calendar_lib import build_stats_calendar_bootstrap
 
-    initial_calendar = build_initial_stats_calendar(
-        pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
-    )
+        initial_calendar, calendar_bootstrap_json = build_stats_calendar_bootstrap(
+            pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
+        )
 
     return {
         "trading_day": trading_day,
@@ -1898,6 +1901,7 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
         "segments": segments,
         "stats_reset_hour": TRADING_DAY_RESET_HOUR,
         "initial_calendar": initial_calendar,
+        "calendar_bootstrap_json": calendar_bootstrap_json,
     }
 
 
@@ -6882,7 +6886,7 @@ def render_main_page(page="trade", embed_mode=None):
         else []
     )
     stats_bundle = (
-        compute_stats_bundle(conn, trading_day, now)
+        compute_stats_bundle(conn, trading_day, now, with_calendar=(page == "stats"))
         if plan.stats_bundle
         else minimal_stats_bundle(TRADING_DAY_RESET_HOUR)
     )
diff --git a/crypto_monitor_gate/templates/index.html b/crypto_monitor_gate/templates/index.html
index ad44612..f6f69bb 100644
--- a/crypto_monitor_gate/templates/index.html
+++ b/crypto_monitor_gate/templates/index.html
@@ -774,8 +774,8 @@
                     </select>
                 </label>
             </div>
-            {% if stats_bundle.initial_calendar %}
-            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.initial_calendar | tojson }}</script>
+            {% if stats_bundle.calendar_bootstrap_json %}
+            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.calendar_bootstrap_json | safe }}</script>
             {% endif %}
             <div id="stats-calendar-wrap" class="trade-cal-wrap stats-calendar-wrap">
                 <div class="trade-cal-head">
diff --git a/crypto_monitor_gate_bot/app.py b/crypto_monitor_gate_bot/app.py
index 21e8b41..1f6e486 100644
--- a/crypto_monitor_gate_bot/app.py
+++ b/crypto_monitor_gate_bot/app.py
@@ -1846,7 +1846,7 @@ def _compute_period_metrics(trades):
     }
 
 
-def compute_stats_bundle(conn, trading_day, now_dt=None):
+def compute_stats_bundle(conn, trading_day, now_dt=None, *, with_calendar=False):
     """日 / 周 / 月 统计：平仓按北京时间交易日（默认 8:00 切日）计入。"""
     now_dt = now_dt or app_now()
     pnls = _load_completed_trade_pnls(conn)
@@ -1883,11 +1883,14 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
 
     dm, wm, mm = slice_metrics("all")
 
-    from trade_stats_calendar_lib import build_initial_stats_calendar
+    initial_calendar = None
+    calendar_bootstrap_json = None
+    if with_calendar:
+        from trade_stats_calendar_lib import build_stats_calendar_bootstrap
 
-    initial_calendar = build_initial_stats_calendar(
-        pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
-    )
+        initial_calendar, calendar_bootstrap_json = build_stats_calendar_bootstrap(
+            pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
+        )
 
     return {
         "trading_day": trading_day,
@@ -1898,6 +1901,7 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
         "segments": segments,
         "stats_reset_hour": TRADING_DAY_RESET_HOUR,
         "initial_calendar": initial_calendar,
+        "calendar_bootstrap_json": calendar_bootstrap_json,
     }
 
 
@@ -6882,7 +6886,7 @@ def render_main_page(page="trade", embed_mode=None):
         else []
     )
     stats_bundle = (
-        compute_stats_bundle(conn, trading_day, now)
+        compute_stats_bundle(conn, trading_day, now, with_calendar=(page == "stats"))
         if plan.stats_bundle
         else minimal_stats_bundle(TRADING_DAY_RESET_HOUR)
     )
diff --git a/crypto_monitor_gate_bot/templates/index.html b/crypto_monitor_gate_bot/templates/index.html
index ad44612..f6f69bb 100644
--- a/crypto_monitor_gate_bot/templates/index.html
+++ b/crypto_monitor_gate_bot/templates/index.html
@@ -774,8 +774,8 @@
                     </select>
                 </label>
             </div>
-            {% if stats_bundle.initial_calendar %}
-            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.initial_calendar | tojson }}</script>
+            {% if stats_bundle.calendar_bootstrap_json %}
+            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.calendar_bootstrap_json | safe }}</script>
             {% endif %}
             <div id="stats-calendar-wrap" class="trade-cal-wrap stats-calendar-wrap">
                 <div class="trade-cal-head">
diff --git a/crypto_monitor_okx/app.py b/crypto_monitor_okx/app.py
index 3cd1331..37030be 100644
--- a/crypto_monitor_okx/app.py
+++ b/crypto_monitor_okx/app.py
@@ -1830,7 +1830,7 @@ def _compute_period_metrics(trades):
     }
 
 
-def compute_stats_bundle(conn, trading_day, now_dt=None):
+def compute_stats_bundle(conn, trading_day, now_dt=None, *, with_calendar=False):
     """日 / 周 / 月 统计：平仓按北京时间交易日（默认 8:00 切日）计入。"""
     now_dt = now_dt or app_now()
     pnls = _load_completed_trade_pnls(conn)
@@ -1861,11 +1861,14 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
 
     dm, wm, mm = slice_metrics("all")
 
-    from trade_stats_calendar_lib import build_initial_stats_calendar
+    initial_calendar = None
+    calendar_bootstrap_json = None
+    if with_calendar:
+        from trade_stats_calendar_lib import build_stats_calendar_bootstrap
 
-    initial_calendar = build_initial_stats_calendar(
-        pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
-    )
+        initial_calendar, calendar_bootstrap_json = build_stats_calendar_bootstrap(
+            pnls, now_dt, _pnl_row_matches_segment, reset_hour=TRADING_DAY_RESET_HOUR
+        )
 
     return {
         "trading_day": trading_day,
@@ -1876,6 +1879,7 @@ def compute_stats_bundle(conn, trading_day, now_dt=None):
         "segments": segments,
         "stats_reset_hour": TRADING_DAY_RESET_HOUR,
         "initial_calendar": initial_calendar,
+        "calendar_bootstrap_json": calendar_bootstrap_json,
     }
 
 
@@ -6381,7 +6385,7 @@ def render_main_page(page="trade", embed_mode=None):
         else []
     )
     stats_bundle = (
-        compute_stats_bundle(conn, trading_day, now)
+        compute_stats_bundle(conn, trading_day, now, with_calendar=(page == "stats"))
         if plan.stats_bundle
         else minimal_stats_bundle(TRADING_DAY_RESET_HOUR)
     )
diff --git a/crypto_monitor_okx/templates/index.html b/crypto_monitor_okx/templates/index.html
index 024f3fb..c8a8919 100644
--- a/crypto_monitor_okx/templates/index.html
+++ b/crypto_monitor_okx/templates/index.html
@@ -803,8 +803,8 @@
                     </select>
                 </label>
             </div>
-            {% if stats_bundle.initial_calendar %}
-            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.initial_calendar | tojson }}</script>
+            {% if stats_bundle.calendar_bootstrap_json %}
+            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.calendar_bootstrap_json | safe }}</script>
             {% endif %}
             <div id="stats-calendar-wrap" class="trade-cal-wrap stats-calendar-wrap">
                 <div class="trade-cal-head">
diff --git a/embed_templates/embed_page_fragment.html b/embed_templates/embed_page_fragment.html
index 5edb643..52c6ab9 100644
--- a/embed_templates/embed_page_fragment.html
+++ b/embed_templates/embed_page_fragment.html
@@ -452,8 +452,8 @@
                     </select>
                 </label>
             </div>
-            {% if stats_bundle.initial_calendar %}
-            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.initial_calendar | tojson }}</script>
+            {% if stats_bundle.calendar_bootstrap_json %}
+            <script type="application/json" id="stats-calendar-bootstrap">{{ stats_bundle.calendar_bootstrap_json | safe }}</script>
             {% endif %}
             <div id="stats-calendar-wrap" class="trade-cal-wrap stats-calendar-wrap">
                 <div class="trade-cal-head">
diff --git a/instance_embed_context_lib.py b/instance_embed_context_lib.py
index 9b774a2..2bbfd89 100644
--- a/instance_embed_context_lib.py
+++ b/instance_embed_context_lib.py
@@ -85,4 +85,5 @@ def minimal_stats_bundle(reset_hour: int) -> dict[str, Any]:
         "stats_reset_hour": reset_hour,
         "segments": [],
         "initial_calendar": None,
+        "calendar_bootstrap_json": None,
     }
diff --git a/tests/test_trade_stats_calendar_lib.py b/tests/test_trade_stats_calendar_lib.py
index 61375b0..10a191c 100644
--- a/tests/test_trade_stats_calendar_lib.py
+++ b/tests/test_trade_stats_calendar_lib.py
@@ -3,7 +3,11 @@ from types import SimpleNamespace
 
 from datetime import datetime
 
-from trade_stats_calendar_lib import build_initial_stats_calendar, build_trade_stats_calendar
+from trade_stats_calendar_lib import (
+    build_initial_stats_calendar,
+    build_stats_calendar_bootstrap,
+    build_trade_stats_calendar,
+)
 
 
 def _row(**kwargs):
@@ -69,6 +73,18 @@ class TradeStatsCalendarLibTests(unittest.TestCase):
         self.assertEqual(payload["month_open_count"], 1)
         self.assertIn("2026-06-20", payload["days"])
 
+    def test_bootstrap_json_roundtrip(self):
+        pnls = [(2.5, None, "2026-06-20", _row())]
+        payload, raw = build_stats_calendar_bootstrap(
+            pnls,
+            datetime(2026, 6, 26, 12, 0),
+            _matches_all,
+            reset_hour=8,
+        )
+        self.assertIsNotNone(payload)
+        self.assertIsNotNone(raw)
+        self.assertIn('"month_open_count":1', raw.replace(" ", ""))
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/trade_stats_calendar_lib.py b/trade_stats_calendar_lib.py
index a2f5020..21fd11e 100644
--- a/trade_stats_calendar_lib.py
+++ b/trade_stats_calendar_lib.py
@@ -1,6 +1,7 @@
 """按交易日聚合实例 trade_records 盈亏，供统计分析页日历 API 使用。"""
 from __future__ import annotations
 
+import json
 from datetime import datetime, timedelta
 from typing import Any, Callable
 
@@ -90,3 +91,25 @@ def build_initial_stats_calendar(
         row_matches_fn,
         reset_hour=reset_hour,
     )
+
+
+def build_stats_calendar_bootstrap(
+    pnls: list[tuple],
+    now_dt: datetime,
+    row_matches_fn: Callable[[Any, str], bool],
+    *,
+    reset_hour: int = 8,
+    segment_key: str = "all",
+) -> tuple[dict[str, Any] | None, str | None]:
+    """返回 (payload, json_str)；失败时 (None, None)，供模板安全内嵌。"""
+    try:
+        payload = build_initial_stats_calendar(
+            pnls,
+            now_dt,
+            row_matches_fn,
+            reset_hour=reset_hour,
+            segment_key=segment_key,
+        )
+        return payload, json.dumps(payload, ensure_ascii=False, separators=(",", ":"))
+    except Exception:
+        return None, None