feat(ack): add Feishu bug review approval gate

skills/ack/scripts/approval_payload.py

@@ -0,0 +1,50 @@
+"""Canonical reviewed Bug task payload shared by intake and validation."""
+
+from __future__ import annotations
+
+import hashlib
+import json
+import re
+from typing import Any
+
+
+PAYLOAD_FIELDS = (
+    "title",
+    "description",
+    "priority",
+    "actual",
+    "expected",
+    "stepsToReproduce",
+    "fixLogic",
+    "acceptanceCriteria",
+)
+NUMBERED_ITEM = re.compile(r"(?:^|\s)([1-9][0-9]*)\.\s+")
+
+
+def review_items(value: str) -> list[str]:
+    """Recover line or numbered-list review text as stable non-empty items."""
+    lines = [line.strip(" \t-*•") for line in value.splitlines() if line.strip()]
+    if len(lines) > 1:
+        return lines
+    text = value.strip()
+    matches = list(NUMBERED_ITEM.finditer(text))
+    if matches:
+        items: list[str] = []
+        for index, match in enumerate(matches):
+            start = match.end()
+            end = matches[index + 1].start() if index + 1 < len(matches) else len(text)
+            item = text[start:end].strip()
+            if item:
+                items.append(item)
+        if items:
+            return items
+    return [text] if text else []
+
+
+def approval_payload_hash(task: dict[str, Any]) -> str:
+    """Hash the exact reviewed fields that Developer and Test consume."""
+    payload = {field: task.get(field) for field in PAYLOAD_FIELDS}
+    encoded = json.dumps(
+        payload, ensure_ascii=False, sort_keys=True, separators=(",", ":"),
+    ).encode("utf-8")
+    return f"sha256:{hashlib.sha256(encoded).hexdigest()}"