Optimize temporary local variable allocation

Reduce over-allocation of temp locals that was causing bytecode bloat.

Before: Math.max(128, tempCount + 64) - minimum 128 slots, 64-slot buffer
After: tempCount + 32 - modest 32-slot buffer

The original allocation was excessive because TempLocalCountVisitor only
counts 3 specific cases (logical operators, for loops, local()), but
there are ~90 places in codegen that allocate temp variables dynamically.

A 32-slot buffer provides safety margin without the extreme waste of the
previous min-128 + 64-buffer approach.

Testing:
- ✅ All 152 unit tests pass (100% pass rate)
- ✅ Reduces bytecode bloat while maintaining safety
- Note: Originally tried no buffer (broke perl5 tests), 32 is the balance

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: fglock

src/main/java/org/perlonjava/codegen/EmitterMethodCreator.java

@@ -575,12 +575,14 @@ private static byte[] getBytecodeInternal(EmitterContext ctx, Node ast, boolean
             // Temporaries are allocated dynamically during bytecode emission via
             // ctx.symbolTable.allocateLocalVariable(). We pre-initialize slots to ensure
             // they're not in TOP state when accessed. Use a visitor to estimate the
-            // actual number needed based on AST structure rather than a fixed count.
+            // actual number needed based on AST structure.
+            // Add a modest buffer since visitor doesn't count all allocation sites.
             int preInitTempLocalsStart = ctx.symbolTable.getCurrentLocalVariableIndex();
-            org.perlonjava.astvisitor.TempLocalCountVisitor tempCountVisitor = 
+            org.perlonjava.astvisitor.TempLocalCountVisitor tempCountVisitor =
                 new org.perlonjava.astvisitor.TempLocalCountVisitor();
             ast.accept(tempCountVisitor);
-            int preInitTempLocalsCount = Math.max(128, tempCountVisitor.getMaxTempCount() + 64);  // Add buffer
+            int preInitTempLocalsCount = tempCountVisitor.getMaxTempCount() + 32;  // Add 32-slot buffer
+            ctx.logDebug("Pre-initializing " + preInitTempLocalsCount + " temp locals");
             for (int i = preInitTempLocalsStart; i < preInitTempLocalsStart + preInitTempLocalsCount; i++) {
                 mv.visitInsn(Opcodes.ACONST_NULL);
                 mv.visitVarInsn(Opcodes.ASTORE, i);