Fix QuantReport: fuzzy file matching + proper backtestId from historical data

- API: fuzzy matcher resolves files by strategy name substring
- Frontend: backtestId now uses historical[name].name (the filename)
- Server restarted with quant_report endpoint

dashboard/server.py

@@ -440,13 +440,41 @@ app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")
 
 @app.get("/api/quant-report/{name}")
 async def get_quant_report(name: str):
-    """Compute full QF-Lib quant report from a backtest file."""
-    backtest_path = os.path.join(BACKTEST_DIR, name)
-    if not os.path.exists(backtest_path):
-        # Try historical
-        hist_path = os.path.join(HISTORICAL_DIR, name)
-        if os.path.exists(hist_path):
-            backtest_path = hist_path
+    """Compute full QF-Lib quant report from a backtest file.
+    Accepts either an exact filename or a strategy-name prefix.
+    """
+    # Build candidate paths
+    candidates = []
+    exact_path = os.path.join(BACKTEST_DIR, name)
+    hist_exact = os.path.join(HISTORICAL_DIR, name)
+    candidates.extend([exact_path, hist_exact])
+    
+    # Try exact match first
+    for path in candidates:
+        if os.path.exists(path):
+            backtest_path = path
+            break
+    else:
+        # Fuzzy match: look for files containing the name
+        for d in [BACKTEST_DIR, HISTORICAL_DIR]:
+            if not os.path.exists(d): continue
+            for f in os.listdir(d):
+                # Match: name is a substring of filename (case insensitive)
+                name_clean = name.lower().replace(" ", "_").replace(".json", "")
+                f_clean = f.lower()
+                if name_clean in f_clean or f_clean.startswith(name_clean):
+                    candidates.append(os.path.join(d, f))
+        if not candidates:
+            # Try partial match on strategy name
+            for d in [BACKTEST_DIR, HISTORICAL_DIR]:
+                if not os.path.exists(d): continue
+                for f in os.listdir(d):
+                    parts = f.lower().replace(".json", "").split("_")
+                    name_parts = name.lower().replace(" ", "_").split("_")
+                    if all(p in parts for p in name_parts):
+                        candidates.append(os.path.join(d, f))
+        if candidates:
+            backtest_path = candidates[0]
         else:
             return JSONResponse({"error": f"Backtest '{name}' not found"}, status_code=404)
     try: