fix(bless): filter commented stdout lines in gas report parsing (#1016)

* fix(bless): filter commented stdout lines in gas report parsing

The gas report parser was incorrectly matching commented lines like
"# stdout 'GAS USED: 123'" because it only checked if the line
contained the pattern, not if it started with it.

Changes:
- Add isValidStdoutLine function to check line starts with known prefix
- Add STORAGE FEE to defaultStdoutPrefixes for consistency
- Use isValidStdoutLine in parseGasOutput to filter commented lines

* refactor(bless): use map for stdout prefix lookup

* test(bless): add unit tests for report.go

Author: junghoon-vans

tests/integration/bless/main.go

@@ -36,7 +36,7 @@ type ScriptProcessor struct {
 	patterns       []MaskPattern
 	stdoutConv     Converter
 	stderrConv     Converter
-	stdoutPrefixes []string
+	stdoutPrefixes map[string]bool
 }
 
 const (
@@ -48,11 +48,12 @@ const (
 	okOutput          = "OK!"
 )
 
-var defaultStdoutPrefixes = []string{
-	"GAS USED:",
-	"STORAGE DELTA:",
-	"TOTAL TX COST:",
-	"EVENTS:",
+var defaultStdoutPrefixes = map[string]bool{
+	"GAS USED:":      true,
+	"STORAGE DELTA:": true,
+	"STORAGE FEE:":   true,
+	"TOTAL TX COST:": true,
+	"EVENTS:":        true,
 }
 
 func main() {
@@ -366,7 +367,7 @@ func (p *outputParser) shouldKeepStdoutLine(line, cmd string) bool {
 	}
 
 	// Check against known prefixes
-	for _, prefix := range p.processor.stdoutPrefixes {
+	for prefix := range p.processor.stdoutPrefixes {
 		if strings.HasPrefix(line, prefix) {
 			return true
 		}

tests/integration/bless/report.go

@@ -195,6 +195,12 @@ func (rg *ReportGenerator) parseGasOutput(lines []string) []GasValue {
 			continue
 		}
 
+		// Only parse lines that START with known stdout prefixes
+		// This filters out commented lines like "# stdout 'GAS USED:'"
+		if !isValidStdoutLine(trimmed) {
+			continue
+		}
+
 		// Parse GAS USED
 		if matches := gasUsedPattern.FindStringSubmatch(trimmed); len(matches) > 1 {
 			current.GasUsed, _ = strconv.ParseUint(matches[1], 10, 64)
@@ -219,6 +225,17 @@ func (rg *ReportGenerator) parseGasOutput(lines []string) []GasValue {
 	return values
 }
 
+// isValidStdoutLine checks if a line starts with a known stdout prefix.
+// Used to filter out commented lines like "# stdout 'GAS USED:'"
+func isValidStdoutLine(line string) bool {
+	for prefix := range defaultStdoutPrefixes {
+		if strings.HasPrefix(line, prefix) {
+			return true
+		}
+	}
+	return false
+}
+
 // buildReport creates a GasReport from parsed data
 func (rg *ReportGenerator) buildReport(functions []FunctionInfo, gasValues []GasValue) *GasReport {
 	report := &GasReport{