Initial project import

plugins/1c/connector/write/contracts.py

@@ -0,0 +1,14 @@
+"""Stable contracts shared by the universal dispatcher and typed handlers."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True)
+class WriteHandler:
+    """A supported public write surface, not an SQL implementation detail."""
+
+    key: str
+    public_target_kind: str
+    operation: str | None = None