From db25edfd875a7f9be2e20a647c32774b586716cd Mon Sep 17 00:00:00 2001
From: kjh2064 <kjh2064@gmail.com>
Date: Sun, 12 Jul 2026 22:23:36 +0900
Subject: [PATCH] fix(qe-m2-03): normalize libpq-style options parameter to
 Search Path for Npgsql compatibility

---
 .../HistoryIngestionPgTests.cs                 | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/dotnet/QuantEngine.Core.Tests/HistoryIngestionPgTests.cs b/src/dotnet/QuantEngine.Core.Tests/HistoryIngestionPgTests.cs
index 55c671f3..a0c40809 100644
--- a/src/dotnet/QuantEngine.Core.Tests/HistoryIngestionPgTests.cs
+++ b/src/dotnet/QuantEngine.Core.Tests/HistoryIngestionPgTests.cs
@@ -50,11 +50,25 @@ namespace QuantEngine.Core.Tests
             string? successfulConnStr = null;
             foreach (var rawDsn in candidates)
             {
+                string connStr = rawDsn;
+                if (rawDsn.Contains("host=") || rawDsn.Contains("dbname="))
+                {
+                    connStr = rawDsn
+                        .Replace("options='-c search_path=quantengine'", "")
+                        .Replace("options=\"-c search_path=quantengine\"", "")
+                        .Replace("dbname=", "Database=")
+                        .Replace("user=", "Username=")
+                        .Replace("host=", "Host=")
+                        .Replace("port=", "Port=")
+                        .Trim();
+                    connStr = string.Join(";", connStr.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)) + ";Search Path=quantengine";
+                }
+
                 try
                 {
-                    using var conn = new NpgsqlConnection(rawDsn);
+                    using var conn = new NpgsqlConnection(connStr);
                     await conn.OpenAsync();
-                    successfulConnStr = rawDsn;
+                    successfulConnStr = connStr;
                     break; // Found working connection
                 }
                 catch