Add failed action feedback rules

Scripts/verify_failed_action_feedback_rules.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+"""Verify player-facing failed-action feedback rules are documented."""
+
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+DOC = ROOT / "Docs" / "KnowledgeAndSkillFoundation.md"
+ROADMAP = ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md"
+
+REQUIRED = {
+    DOC: [
+        "## Failed-Action And Poor-Result Feedback",
+        "Feedback should identify:",
+        "Message style:",
+        "Say what happened.",
+        "Name one likely cause.",
+        "Offer one useful next step.",
+        "Feedback rule:",
+    ],
+    ROADMAP: [
+        "[x] Add player-facing feedback that explains why an action failed or produced poor results.",
+    ],
+}
+
+
+def main() -> None:
+    missing: list[str] = []
+    for path, snippets in REQUIRED.items():
+        text = path.read_text(encoding="utf-8")
+        for snippet in snippets:
+            if snippet not in text:
+                missing.append(f"{path.relative_to(ROOT)} missing {snippet!r}")
+    if missing:
+        raise SystemExit("FAILED: " + "; ".join(missing))
+    print("OK: failed-action feedback rules are documented.")
+
+
+if __name__ == "__main__":
+    main()