fix: two-tier parity bounds (tight default, smoke via SECRYST_E2E_SMOKE)

Author: ronaldtse

spec/interscript/ml/golden_spec.rb

@@ -42,9 +42,11 @@
         got = out.chars
         d = (0...[exp.length, got.length].min).count { |j| exp[j] != got[j] }
         total_diffs += d
-        expect(d.to_f / exp.length).to be < 0.02, row["input"][0, 60]
+        row_bound = ENV["SECRYST_E2E_SMOKE"] == "1" ? 0.05 : 0.02
+        expect(d.to_f / exp.length).to be < row_bound, row["input"][0, 60]
       end
-      expect(total_diffs.to_f / total_chars).to be < 0.005
+      corpus_bound = ENV["SECRYST_E2E_SMOKE"] == "1" ? 0.02 : 0.005
+      expect(total_diffs.to_f / total_chars).to be < corpus_bound
     end
   end
 end