Refactor ExprCompiler to use variable name for symbol resolution and update integration tests by replacing SkipCaseArray and DebugCaseArray with CaseArray for consistency.

pkg/compiler/internal/expr.go

@@ -364,11 +364,12 @@ func (ec *ExprCompiler) CompileMemberExpression(ctx fql.IMemberExpressionContext
 }
 
 func (ec *ExprCompiler) CompileVariable(ctx fql.IVariableContext) vm.Operand {
+	name := ctx.Identifier().GetText()
 	// Just return the register / constant index
-	op, _, found := ec.ctx.Symbols.Resolve(ctx.GetText())
+	op, _, found := ec.ctx.Symbols.Resolve(name)
 
 	if !found {
-		panic(runtime.Error(core.ErrVariableNotFound, ctx.GetText()))
+		panic(runtime.Error(core.ErrVariableNotFound, name))
 	}
 
 	if op.IsRegister() {

test/integration/vm/vm_for_in_collect_agg_test.go

@@ -205,7 +205,7 @@ FOR u IN users
 				"highSalaryCount": 3,
 			},
 		}, "Should aggregate with conditional expressions"),
-		SkipCaseArray(`
+		CaseArray(`
 			LET users = [
 				{
 					active: true,
@@ -247,7 +247,7 @@ FOR u IN users
 		`,
 			[]any{map[string]any{"minAge": 25, "maxAge": 69}},
 			"Should collect and aggregate values without grouping"),
-		SkipCaseArray(`
+		CaseArray(`
 			LET users = []
 			FOR u IN users
 				COLLECT AGGREGATE minAge = MIN(u.age), maxAge = MAX(u.age)
@@ -258,7 +258,7 @@ FOR u IN users
 		`,
 			[]any{map[string]any{"minAge": nil, "maxAge": nil}},
 			"Should handle empty arrays gracefully"),
-		DebugCaseArray(`
+		CaseArray(`
 LET users = [
 				{
 					active: true,