Decide MVP shelter opening scope

AGRARIAN_DEVELOPMENT_ROADMAP.md

@@ -623,7 +623,9 @@ Target deliverable: A small group can join a server, spawn into one biome, gathe
   the craftable `primitive_roof_panel` inventory construction part consumed by
   the primitive shelter recipe; separately placeable modular roofs remain
   deferred to `0.2.E Permanent Structures`.
-- [ ] Add door/opening if needed.
+- [x] Add door/opening if needed. MVP primitive shelters use an open entrance
+  with no interactive door; door actors, locks, permissions, and modular
+  openings remain deferred to `0.2.E Permanent Structures`.
 - [x] Add resource cost validation.
 - [x] Add construction interaction.
 - [x] Add shelter protection volume.

Docs/TechnicalDesignDocument.md

@@ -92,6 +92,9 @@ Early runtime systems should remain small and explicit:
 - The MVP roof piece is `primitive_roof_panel`, a craftable inventory
   construction part consumed by the primitive shelter recipe rather than an
   independently placed roof actor.
+- MVP primitive shelters use an open entrance and do not include an
+  interactive door. Door actors, locks, ownership permissions, and modular
+  openings are deferred to permanent structures.
 - `UAgrarianBuildingPlacementComponent` owns the MVP placement preview. It
   traces from the player view, snaps to the configured grid, validates distance
   and collision, broadcasts Blueprint-readable preview state, and draws a

Scripts/verify_shelter_door_opening_decision.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+ROADMAP = ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md"
+TECHNICAL_DESIGN = ROOT / "Docs" / "TechnicalDesignDocument.md"
+
+
+def compact(path: Path) -> str:
+    return " ".join(path.read_text(encoding="utf-8").split())
+
+
+def require(path: Path, text: str) -> None:
+    data = compact(path)
+    if text not in data:
+        raise SystemExit(f"FAIL: {path.relative_to(ROOT)} missing required text: {text}")
+
+
+def main() -> None:
+    require(ROADMAP, "[x] Add door/opening if needed.")
+    require(ROADMAP, "MVP primitive shelters use an open entrance")
+    require(ROADMAP, "door actors, locks, permissions, and modular openings remain deferred")
+    require(TECHNICAL_DESIGN, "MVP primitive shelters use an open entrance")
+    require(TECHNICAL_DESIGN, "Door actors, locks, ownership permissions, and modular openings are deferred")
+    print("PASS: MVP shelter door/opening decision is documented.")
+
+
+if __name__ == "__main__":
+    main()