fix(ci): use Groovy readProperties for version, add git pull before push

- Replace PowerShell-based version reading with Groovy's readProperties
  and readFile/writeFile to avoid encoding issues causing "1.0.3→1.0.3"
- Add git pull --rebase before push to handle non-fast-forward rejections

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

Jenkinsfile

@@ -50,10 +50,9 @@ pipeline {
         stage('Resolve Versions') {
             steps {
                 script {
-                    def currentVer = bat(
-                        script: "@powershell -Command \"(Get-Content gradle.properties | Select-String '^PUBLISH_VERSION=').Line.Split('=')[1]\"",
-                        returnStdout: true
-                    ).replaceAll("\\r","").replaceAll("\\n","").trim()
+                    // Read version using Groovy to avoid PowerShell encoding issues
+                    def props = readProperties file: 'gradle.properties'
+                    def currentVer = props['PUBLISH_VERSION'] ?: '0.1.0'
                     echo "Current PUBLISH_VERSION: ${currentVer}"
 
                     def parts = currentVer.tokenize('.')
@@ -77,7 +76,10 @@ pipeline {
                     echo "Auto-bumped PUBLISH_VERSION: ${currentVer} → ${newVer}"
                     env.NEW_VERSION = newVer
 
-                    bat "powershell -Command \"(Get-Content gradle.properties) -replace '^PUBLISH_VERSION=.*', 'PUBLISH_VERSION=${newVer}' | Set-Content gradle.properties\""
+                    // Write back using Groovy to avoid PowerShell encoding issues
+                    def content = readFile('gradle.properties')
+                    content = content.replaceAll(/(?m)^PUBLISH_VERSION=.*/, "PUBLISH_VERSION=${newVer}")
+                    writeFile file: 'gradle.properties', text: content
 
                     def modules = env.PUBLISH_MODULES.split(',').toList()
                     def versionMap = [:]
@@ -122,6 +124,7 @@ pipeline {
                         git config user.name "Jenkins CI"
                         git add gradle.properties
                         git diff --cached --quiet || git commit -m "ci: bump PUBLISH_VERSION to ${env.NEW_VERSION}"
+                        git pull --rebase origin main
                         git push origin main
                     """
                 }