refactor: enhance Optuna backtesting framework, optimize orderbook filtering, and update database management utilities.

scratch/find_unclosed.py

@@ -0,0 +1,37 @@
+from html.parser import HTMLParser
+
+class DivTracker(HTMLParser):
+    def __init__(self):
+        super().__init__()
+        self.stack = []
+        self.found_tab_backtest = False
+        
+    def handle_starttag(self, tag, attrs):
+        if tag == 'div':
+            attrs_dict = dict(attrs)
+            if attrs_dict.get('id') == 'tab-backtest':
+                self.found_tab_backtest = True
+            
+            if self.found_tab_backtest:
+                self.stack.append(self.getpos())
+                
+    def handle_endtag(self, tag):
+        if tag == 'div' and self.found_tab_backtest:
+            if self.stack:
+                self.stack.pop()
+
+with open('templates/backtest.html', 'r', encoding='utf-8') as f:
+    html = f.read()
+    
+# Only process up to tab-backtest end
+end_idx = html.find('tab-backtest end')
+if end_idx != -1:
+    # include the </div> before it
+    end_div_idx = html.rfind('</div>', 0, end_idx)
+    html = html[:end_div_idx+6]
+    
+tracker = DivTracker()
+tracker.feed(html)
+print("Unclosed div start positions inside tab-backtest:")
+for pos in tracker.stack:
+    print(pos)