refactor: remove dead boolean_ops.go (YAGNI/DRY)

Delete internal/rpn/boolean_ops.go which defines BooleanOperations
struct with GT/LT/GTE/LTE/EQ/NEQ methods using raw float64
comparisons (no metric awareness). NewBooleanOperations() was never
called by any live code path.

The authoritative metric-aware comparison operators live on the
Operations struct in operations_compare.go via compareValues().
boolean_test.go tests via ParseAndEvaluate which uses the live
Operations implementation.

Removes 167 lines of dead code.

1 files changed, 0 insertions, 167 deletions

diff --git a/internal/rpn/boolean_ops.go b/internal/rpn/boolean_ops.go
deleted file mode 100644
index fdad862..0000000
--- a/internal/rpn/boolean_ops.go
+++ /dev/null
@@ -1,167 +0,0 @@
-// SPDX-License-Identifier: MIT
-// Copyright (c) 2026 Paul Buetow
-
-package rpn
-
-import (
-	"fmt"
-)
-
-// BooleanOperations provides boolean comparison operator implementations.
-type BooleanOperations struct {
-}
-
-// NewBooleanOperations creates a new BooleanOperations instance.
-func NewBooleanOperations() *BooleanOperations {
-	return &BooleanOperations{}
-}
-
-// GT pops two values from stack, compares (a > b), and pushes a boolean result.
-func (o *BooleanOperations) GT(stack *Stack) error {
-	b, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for gt: %w", err)
-	}
-
-	a, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for gt: %w", err)
-	}
-
-	aF, err := toFloat64(a, "gt")
-	if err != nil {
-		return err
-	}
-	bF, err := toFloat64(b, "gt")
-	if err != nil {
-		return err
-	}
-
-	stack.Push(NewFloatFromBool(aF > bF))
-	return nil
-}
-
-// LT pops two values from stack, compares (a < b), and pushes a boolean result.
-func (o *BooleanOperations) LT(stack *Stack) error {
-	b, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for lt: %w", err)
-	}
-
-	a, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for lt: %w", err)
-	}
-
-	aF, err := toFloat64(a, "lt")
-	if err != nil {
-		return err
-	}
-	bF, err := toFloat64(b, "lt")
-	if err != nil {
-		return err
-	}
-
-	stack.Push(NewFloatFromBool(aF < bF))
-	return nil
-}
-
-// GTE pops two values from stack, compares (a >= b), and pushes a boolean result.
-func (o *BooleanOperations) GTE(stack *Stack) error {
-	b, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for gte: %w", err)
-	}
-
-	a, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for gte: %w", err)
-	}
-
-	aF, err := toFloat64(a, "gte")
-	if err != nil {
-		return err
-	}
-	bF, err := toFloat64(b, "gte")
-	if err != nil {
-		return err
-	}
-
-	stack.Push(NewFloatFromBool(aF >= bF))
-	return nil
-}
-
-// LTE pops two values from stack, compares (a <= b), and pushes a boolean result.
-func (o *BooleanOperations) LTE(stack *Stack) error {
-	b, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for lte: %w", err)
-	}
-
-	a, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for lte: %w", err)
-	}
-
-	aF, err := toFloat64(a, "lte")
-	if err != nil {
-		return err
-	}
-	bF, err := toFloat64(b, "lte")
-	if err != nil {
-		return err
-	}
-
-	stack.Push(NewFloatFromBool(aF <= bF))
-	return nil
-}
-
-// EQ pops two values from stack, compares (a == b), and pushes a boolean result.
-func (o *BooleanOperations) EQ(stack *Stack) error {
-	b, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for eq: %w", err)
-	}
-
-	a, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for eq: %w", err)
-	}
-
-	aF, err := toFloat64(a, "eq")
-	if err != nil {
-		return err
-	}
-	bF, err := toFloat64(b, "eq")
-	if err != nil {
-		return err
-	}
-
-	stack.Push(NewFloatFromBool(aF == bF))
-	return nil
-}
-
-// NEQ pops two values from stack, compares (a != b), and pushes a boolean result.
-func (o *BooleanOperations) NEQ(stack *Stack) error {
-	b, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for neq: %w", err)
-	}
-
-	a, err := stack.Pop()
-	if err != nil {
-		return fmt.Errorf("insufficient operands for neq: %w", err)
-	}
-
-	aF, err := toFloat64(a, "neq")
-	if err != nil {
-		return err
-	}
-	bF, err := toFloat64(b, "neq")
-	if err != nil {
-		return err
-	}
-
-	stack.Push(NewFloatFromBool(aF != bF))
-	return nil
-}