revert: app/ → site/ (drhider proves site/ works fine)

site/db/spec_current.py

@@ -0,0 +1,19 @@
+"""spec_current — текущее состояние спецификации."""
+from .connection import query
+
+
+def list_by_contract(contract_id):
+    """Return list of dicts with name_hash, name, price, qty, sum, date_start."""
+    return query(
+        """SELECT name_hash, name, price, qty, sum, date_start
+           FROM spec_current WHERE contract_id = %s ORDER BY name""",
+        (contract_id,),
+    )
+
+
+def get_elements_json(document_id):
+    """Get elements_json for a document."""
+    rows = query(
+        "SELECT elements_json FROM documents WHERE id = %s", (document_id,)
+    )
+    return rows[0]["elements_json"] if rows and rows[0]["elements_json"] else None