feat(ack): shard task records for merge-safe workspaces

skills/ack/scripts/feishu_bug_intake.py

@@ -25,6 +25,7 @@ from pathlib import Path
 from typing import Any
 
 from approval_payload import approval_payload_hash, review_items
+from task_store import TaskStoreError, is_task_store_manifest, materialize_board, parse_document
 from validate_tasks import validate_builtin as validate_task_board
 from yaml_subset import DuplicateKeyError, YamlSubsetError, load_json_unique, load_yaml_subset, make_unique_pyyaml_loader
 
@@ -180,21 +181,11 @@ def cli_environment() -> dict[str, str]:
 
 def load_board(path: Path) -> dict[str, Any]:
     try:
-        text = path.read_text(encoding="utf-8")
-        if path.suffix.lower() == ".json":
-            value = load_json_unique(text)
-        else:
-            try:
-                import yaml  # type: ignore
-                value = yaml.load(text, Loader=make_unique_pyyaml_loader(yaml))
-            except ImportError:
-                value = load_yaml_subset(text)
-    except (OSError, json.JSONDecodeError, DuplicateKeyError, YamlSubsetError) as exc:
+        value = parse_document(path)
+        if is_task_store_manifest(value):
+            value = materialize_board(value, path)
+    except (OSError, json.JSONDecodeError, DuplicateKeyError, YamlSubsetError, TaskStoreError) as exc:
         raise IntakeError(f"cannot read task board: {exc}") from exc
-    except Exception as exc:  # PyYAML errors are intentionally not exposed verbatim.
-        raise IntakeError("cannot parse task board") from exc
-    if not isinstance(value, dict):
-        raise IntakeError("task board must be an object")
     return value