fix(tests): the matrix survey lets 'no template configured' skip, not fail

_survey() caught every exception per cell as 'a crash is a gap too', which
swallowed the provider's FileNotFoundError on a machine with no HERO Designer
template — CI — and reported 7,924 phantom disagreements. The conftest hook
already turns that one error into a skip; the survey now re-raises it so the
hook can. Reproduced with the local template hidden: 608 passed / 1,085
skipped / exit 0, where CI had 1 failed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PrVDXgpDfQpzEGErZTLjEs

Author: pdbethke

tests/test_included_matrix.py

@@ -37,6 +37,11 @@ def _survey() -> dict[str, str]:
     for c in cells():
         try:
             allowed, reason = _verdict(c)
+        except FileNotFoundError:
+            # "No HERO Designer template configured" is not a verdict; let it
+            # reach conftest's hook, which turns it into a skip (CI has no
+            # template). Swallowing it here counted 7,924 phantom gaps.
+            raise
         except Exception as e:  # noqa: BLE001 -- a crash is a gap too
             wrong[cell_key(c["modifier"], c["power"])] = f"raised {type(e).__name__}: {e}"
             continue