fix: auto-load libfbclient on macOS from Firebird.framework

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/services/firebird_service.py

@@ -30,7 +30,17 @@ class FirebirdService:
         self.conn = None
 
     def connect(self, host: str, port: int, database: str, user: str, password: str):
+        import platform, os
         try:
+            if platform.system() == "Darwin":
+                mac_lib = "/Library/Frameworks/Firebird.framework/Versions/A/Resources/lib/libfbclient.dylib"
+                if os.path.exists(mac_lib):
+                    os.environ.setdefault("DYLD_LIBRARY_PATH",
+                        "/Library/Frameworks/Firebird.framework/Versions/A/Resources/lib")
+                    try:
+                        fdb.load_api(mac_lib)
+                    except Exception:
+                        pass
             self.conn = fdb.connect(
                 host=host,
                 port=port,