debug(ci): use cmd findstr to read version, add debug output

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Jenkinsfile

@@ -50,12 +50,13 @@ pipeline {
         stage('Resolve Versions') {
             steps {
                 script {
-                    // Read version using powershell with explicit encoding
-                    def verLine = bat(
-                        script: '@powershell -NoProfile -Command "[Console]::OutputEncoding=[Text.Encoding]::ASCII; (Get-Content gradle.properties | Select-String \'PUBLISH_VERSION\').ToString().Split(\'=\')[1].Trim()"',
+                    // Read version using cmd.exe findstr
+                    def verRaw = bat(
+                        script: '@findstr /B "PUBLISH_VERSION=" gradle.properties',
                         returnStdout: true
                     ).trim()
-                    def currentVer = verLine ?: '0.1.0'
+                    echo "DEBUG: verRaw=[${verRaw}]"
+                    def currentVer = verRaw.contains('=') ? verRaw.split('=', 2)[1].trim() : '0.1.0'
                     echo "Current PUBLISH_VERSION: ${currentVer}"
 
                     def parts = currentVer.tokenize('.')