docs: deposit selection summary and bind.labelColumn contract

tests/test_actions_manifest.py

@@ -74,8 +74,10 @@ def _validate_bind_tables(action_id: str, bind: object) -> list[str]:
     errors: list[str] = []
     if not isinstance(bind, dict):
         return [f"{action_id}: bind must be object"]
-    if set(bind.keys()) - {"tables"}:
-        errors.append(f"{action_id}: bind only allows tables, got {sorted(bind.keys())}")
+    allowed = {"tables", "inputMapping", "columnMapping", "labelColumn"}
+    unknown = set(bind.keys()) - allowed
+    if unknown:
+        errors.append(f"{action_id}: bind only allows {sorted(allowed)}, got {sorted(bind.keys())}")
     tables = bind.get("tables")
     if not isinstance(tables, list) or len(tables) < 1:
         errors.append(f"{action_id}: bind.tables must be non-empty array")
@@ -90,6 +92,12 @@ def _validate_bind_tables(action_id: str, bind: object) -> list[str]:
         if table in seen:
             errors.append(f"{action_id}: bind.tables duplicate {table!r}")
         seen.add(table)
+    label_column = bind.get("labelColumn")
+    if label_column is not None:
+        if not isinstance(label_column, str) or not label_column.strip():
+            errors.append(f"{action_id}: bind.labelColumn must be non-empty string")
+        elif not _TABLE_NAME_PATTERN.fullmatch(label_column):
+            errors.append(f"{action_id}: bind.labelColumn {label_column!r} must be snake_case")
     return errors
 
 
@@ -432,6 +440,36 @@ class TestActionsManifest(unittest.TestCase):
         with self.assertRaises(ValidationError):
             jsonschema.validate(instance=manifest, schema=schema)
 
+    def test_schema_allows_bind_label_column(self) -> None:
+        try:
+            import jsonschema
+        except ImportError:
+            self.fail("jsonschema is required")
+        schema = _load_actions_schema()
+        bind_props = schema["$defs"]["bind"]["properties"]
+        self.assertIn("labelColumn", bind_props)
+        manifest = {
+            "schemaVersion": 1,
+            "skill": "your-skill-slug",
+            "actions": [
+                {
+                    "id": "probe-label-column",
+                    "label": "处理勾选",
+                    "description": "验证 bind.labelColumn 可通过 Schema",
+                    "placements": ["toolbar", "batch"],
+                    "executionProfile": "sync",
+                    "interaction": "confirm",
+                    "bind": {
+                        "tables": ["demo_items"],
+                        "inputMapping": {"ids": "$selection.ids"},
+                        "labelColumn": "display_name",
+                    },
+                    "entrypoint": {"type": "cli", "command": "health", "args": []},
+                }
+            ],
+        }
+        jsonschema.validate(instance=manifest, schema=schema)
+
     def test_no_execution_profile_placement_coupling_in_tests(self) -> None:
         """守护：本文件不得引入入口位置与 sync/async 的错误硬耦合断言。"""
         path = os.path.join(get_skill_root(), "tests", "test_actions_manifest.py")
@@ -593,6 +631,8 @@ class TestActionsManifest(unittest.TestCase):
             "afterFailure",
             "cellPresentation",
             "CELL_PRESENTATION.md",
+            "labelColumn",
+            "已选择",
         ):
             self.assertIn(marker, text, msg=f"ACTIONS.md missing {marker!r}")
         self.assertNotIn(