From c8ffc764e1bb299b9d714dcfe56f0aa02f730653 Mon Sep 17 00:00:00 2001
From: dekun <dekun@local>
Date: Mon, 8 Jun 2026 08:23:43 +0800
Subject: [PATCH] Increase default chart initial bar counts per timeframe.

Load 2000 bars for 1m/5m/15m, 1000 for 1h/2h/4h, and 500 for 1d/1w on first screen instead of 300-bar chunked defaults.

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 hub_ohlcv_lib.py                   | 10 ++++++----
 manual_trading_hub/static/chart.js | 16 ++++++++--------
 tests/test_hub_kline_store.py      |  4 +++-
 3 files changed, 17 insertions(+), 13 deletions(-)

diff --git a/hub_ohlcv_lib.py b/hub_ohlcv_lib.py
index 98ca998..7e9ee2b 100644
--- a/hub_ohlcv_lib.py
+++ b/hub_ohlcv_lib.py
@@ -87,10 +87,12 @@ def aggregate_ratio(display_tf: str, source_tf: str) -> int:
 def chart_initial_limit(timeframe: str) -> int:
     tf = normalize_chart_timeframe(timeframe)
     if tf in SMALL_DISPLAY_TFS:
-        return 300
-    if tf == "1w":
-        return 150
-    return 200
+        return 2000
+    if tf in MID_DISPLAY_TFS:
+        return 1000
+    if tf in DAILY_PLUS_TIMEFRAMES:
+        return 500
+    return 500
 
 
 def chart_chunk_limit(timeframe: str) -> int:
diff --git a/manual_trading_hub/static/chart.js b/manual_trading_hub/static/chart.js
index bc8cbbe..8cf270f 100644
--- a/manual_trading_hub/static/chart.js
+++ b/manual_trading_hub/static/chart.js
@@ -8,14 +8,14 @@
   const DEFAULT_VISIBLE_BARS = 200;
   const CHART_LOAD_LEFT_THRESHOLD = 25;
   const CHART_INITIAL_LIMITS = {
-    "1m": 300,
-    "5m": 300,
-    "15m": 300,
-    "1h": 200,
-    "2h": 200,
-    "4h": 200,
-    "1d": 200,
-    "1w": 150,
+    "1m": 2000,
+    "5m": 2000,
+    "15m": 2000,
+    "1h": 1000,
+    "2h": 1000,
+    "4h": 1000,
+    "1d": 500,
+    "1w": 500,
   };
   const CHART_CHUNK_LIMITS = {
     "1m": 500,
diff --git a/tests/test_hub_kline_store.py b/tests/test_hub_kline_store.py
index d923ce8..2ec7b3f 100644
--- a/tests/test_hub_kline_store.py
+++ b/tests/test_hub_kline_store.py
@@ -39,7 +39,9 @@ class TestHubKlineStore(unittest.TestCase):
         self.assertEqual(bar_limit_for_timeframe("1h"), 1000)
         self.assertEqual(bar_limit_for_timeframe("1d"), 1000)
         self.assertEqual(bar_limit_for_timeframe("1w"), 500)
-        self.assertEqual(chart_initial_limit("5m"), 300)
+        self.assertEqual(chart_initial_limit("5m"), 2000)
+        self.assertEqual(chart_initial_limit("1h"), 1000)
+        self.assertEqual(chart_initial_limit("1d"), 500)
 
     def test_chart_fetch_window_exceeds_retention(self):
         now = int(time.time() * 1000)