phase 7-8 完成 + warmup 修复 + 产物结构化重组

主要内容：
- Phase 8 PROMOTE: finalist #1 (trial #324) registry 条目，自动生成
- Optuna objective warmup bug 修复 (shared/optimizer/objective.py)
- studies/ 目录按用途重组为 optuna/ + finalists/ + features/ 三层
- reports/ 加入 Optuna 中文 dashboard (5 主图 + 18 slice + 15 contour)
- 新增 PROJECT_GUIDE.md 项目说明文档
- 新增 build_registry_entry.py / build_optuna_dashboard.py / build_feature_datasets.py
- .gitignore: 允许提交 studies/*.db (Optuna DB) 和 reports/*.html (MT5 + dashboard)

scripts/check_first_trades.py

@@ -0,0 +1,33 @@
+"""Dump first/last trade rows from each MT5 report to confirm test window."""
+from pathlib import Path
+from lxml import html
+
+for label, fn in [("IS", "IS-ReportTester-52845377.html"), ("OOS", "OOS-ReportTester-52845377.html")]:
+    p = Path("reports") / fn
+    raw = p.read_bytes()
+    text = raw.decode("utf-16") if raw[:2] in (b"\xff\xfe", b"\xfe\xff") else raw.decode("utf-8", errors="replace")
+    tree = html.fromstring(text)
+
+    print(f"=== {label} ({fn}) ===")
+    # Trade rows have 13 cells (Time, Deal, Symbol, Type, Direction, Volume,
+    # Price, Order, Commission, Fee, Swap, Profit, Balance, Comment)
+    trade_rows = []
+    for row in tree.iter("tr"):
+        cells = row.findall("td")
+        if len(cells) != 13:
+            continue
+        # First cell is a timestamp like '2025.01.02 15:50:00'
+        first = (cells[0].text_content() or "").strip()
+        if "20" in first and ":" in first:
+            trade_rows.append([c.text_content().strip()[:30] for c in cells])
+
+    print(f"  total trade rows: {len(trade_rows)}")
+    if trade_rows:
+        print(f"  first 3 trades:")
+        for r in trade_rows[:3]:
+            print(f"    {r[0]:<22}  {r[3]:<5} {r[4]:<4}  lots={r[5]:<6} price={r[6]:<10}  pnl={r[10]:<8}  bal={r[11]}")
+        print(f"  last 3 trades:")
+        for r in trade_rows[-3:]:
+            print(f"    {r[0]:<22}  {r[3]:<5} {r[4]:<4}  lots={r[5]:<6} price={r[6]:<10}  pnl={r[10]:<8}  bal={r[11]}")
+    print()
+