Persist active fire spread state

Scripts/verify_fire_persistence_state.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+"""Verify active grass, forest, and structure fire state persists."""
+
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+FIRE_CPP = ROOT / "Source" / "AgrarianGame" / "AgrarianCampfire.cpp"
+TDD = ROOT / "Docs" / "TechnicalDesignDocument.md"
+ROADMAP = ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md"
+
+PERSISTED_KEYS = [
+    "grass_ignition_risk_score",
+    "forest_ignition_risk_score",
+    "structure_ignition_risk_score",
+    "grass_or_brush_ignited",
+    "forest_fuel_ignited",
+    "structure_ignited",
+    "grass_fire_intensity",
+    "forest_fire_intensity",
+    "structure_fire_intensity",
+    "active_fire_spread_radius",
+    "fire_suppression_pressure",
+]
+
+
+def require(condition: bool, message: str) -> None:
+    if not condition:
+        raise SystemExit(f"FAILED: {message}")
+
+
+def main() -> None:
+    fire_cpp = FIRE_CPP.read_text(encoding="utf-8")
+    tdd = TDD.read_text(encoding="utf-8")
+    roadmap = ROADMAP.read_text(encoding="utf-8")
+
+    for key in PERSISTED_KEYS:
+        require(
+            f'NumberState.Add(TEXT("{key}")' in fire_cpp,
+            f"campfire capture missing persisted key {key}",
+        )
+        require(
+            f'NumberState.Find(TEXT("{key}")' in fire_cpp,
+            f"campfire apply missing persisted key {key}",
+        )
+
+    for token in [
+        "Active grass, forest, and structure fire state persists",
+        "ignition flags",
+        "fire intensities",
+        "spread radius",
+        "suppression pressure",
+    ]:
+        require(token in tdd, f"technical design document missing {token!r}")
+
+    require(
+        "[x] Persist active grass, forest, and structure fires across save/load" in roadmap,
+        "roadmap item is not checked off",
+    )
+
+    print("OK: active fire state persists across save/load.")
+
+
+if __name__ == "__main__":
+    main()