fix(tests): stop exempting cart, hay-bale and stone-well from the falsifier-table check (#210)

All three READMEs gained falsifier tables in #205 and #206, and the
static checker already parses them (28 pieces, 181 falsifiers), but they
stayed listed in KNOWN_UNDOCUMENTED. That exemption is now a hole: if
one of those tables were deleted, the checker would skip the piece
silently instead of failing it.

Every falsifier was run, not read: the runtime mode reports 19/19 exits
matching their declared budgets on Blender 5.2.1, and a direct sweep
gives the same 19 codes on 4.5.11.

Closes #203

Signed-off-by: TMHSDigital <154358121+TMHSDigital@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Author: TMHSDigital

tests/check_falsifier_targets.py

@@ -51,8 +51,11 @@
 SHOWCASE = os.path.join(ROOT, "showcase")
 
 # Pieces that predate the falsifier-table convention. Tracked for backfill;
-# a NEW piece without a table is an error, not an entry here.
-KNOWN_UNDOCUMENTED = {"cart", "hay-bale", "stone-well"}
+# a NEW piece without a table is an error, not an entry here. Empty since
+# cart, hay-bale and stone-well gained tables (#203): a piece left listed
+# here after its table lands would be skipped silently if the table were
+# later deleted.
+KNOWN_UNDOCUMENTED: set[str] = set()
 
 # Flags that select a code path rather than break a contract. Per
 # CONTRIBUTING.md these are explicitly not falsifiers.