Add truthiness test cases for ensure_bool() validation

.gitignore

@@ -83,3 +83,8 @@ site/
 *.bc
 *.wasm
 test_compiler.py
+
+# Compiled binaries in examples (no extension)
+examples/compiler/benchmarks/truthiness_test
+examples/compiler/benchmarks/loop_fast
+examples/compiler/benchmarks/fibonacci

examples/compiler/benchmarks/loop_fast.eigs

@@ -0,0 +1,13 @@
+# Sum of 1 to 1,000,000
+# This is the ultimate test of scalar iteration speed
+# Tests the Scalar Fast Path with while loops
+
+i is 0
+sum is 0
+limit is 1000000
+
+loop while i < limit:
+    i is i + 1
+    sum is sum + i
+
+print of sum

examples/compiler/benchmarks/truthiness_test.eigs

@@ -0,0 +1,14 @@
+# Test truthiness with scalar countdown
+# This tests the ensure_bool() fix where a scalar is used directly as a condition
+# Before the fix, this would crash with "cbranch expects i1, got double"
+
+count is 10
+sum is 0
+
+# Using a scalar variable directly as a condition (not a comparison)
+loop while count:
+    sum is sum + count
+    count is count - 1
+
+print of sum
+# Expected: 55 (10 + 9 + 8 + ... + 1)