fix(map): load_map rejects two deployment sides bound to the same zone letter (build_states resets its placed set per side, so shared letters deployed camps on top of each other) - fail-fast MapValidationError + README rule, reject/accept tests

2026-09-19 17:12:42 +02:00
parent 2ee19d34e4
commit ba5eb4c95f
3 changed files with 28 additions and 0 deletions
@@ -140,6 +140,14 @@ def _check_deployment(
    if missing:
        msg = f"deployment zones absent from zones layer: {missing}"
        raise MapValidationError(path, msg)
+    letters = list(deployment.values())
+    shared = sorted({letter for letter in letters if letters.count(letter) > 1})
+    if shared:
+        msg = (
+            "deployment sides share zone letters (each side needs its own "
+            f"distinct zone, or they deploy on top of each other): {shared}"
+        )
+        raise MapValidationError(path, msg)


 def load_map(path: Path) -> MapSpec: