refactor: extract major version logic into a separate function for improved code clarity

This update introduces a new function, getMajorVersion, to encapsulate the logic for extracting the major version from a version string. This change reduces code duplication in the getFileName and getDownloadURL functions, enhancing maintainability and readability. Additionally, a new rule has been added to the cursor.mdc file to encourage avoiding code duplication.

Author: andrzej-janczak

.cursor/rules/cursor.mdc

@@ -7,6 +7,7 @@ alwaysApply: true
 # Your rule content
 
 ## Key Rules
+- avoid code copy pasting and duplication, refactor to function eagerly when possible  
 - use fulnames like e.g. feature, instaed of feat 
 - run go build after each code modification to see if app compiles
 - remove dead unused code

plugins/runtime-utils.go

@@ -196,6 +196,14 @@ func (p *runtimePlugin) getExtension(goos string) string {
 	return p.Config.Download.Extension.Default
 }
 
+// getMajorVersion extracts the major version from a version string (e.g. "17.0.10" -> "17")
+func (p *runtimePlugin) getMajorVersion(version string) string {
+	if idx := strings.Index(version, "."); idx != -1 {
+		return version[:idx]
+	}
+	return version
+}
+
 // GetFileName generates the filename based on the template in plugin.yaml
 func (p *runtimePlugin) getFileName(version string) string {
 	goos := runtime.GOOS
@@ -206,16 +214,10 @@ func (p *runtimePlugin) getFileName(version string) string {
 	mappedOS := p.getMappedOS(goos)
 	releaseVersion := p.getReleaseVersion()
 
-	// Extract major version from version string (e.g. "17.0.10" -> "17")
-	majorVersion := version
-	if idx := strings.Index(version, "."); idx != -1 {
-		majorVersion = version[:idx]
-	}
-
 	// Prepare template data
 	data := templateData{
 		Version:        version,
-		MajorVersion:   majorVersion,
+		MajorVersion:   p.getMajorVersion(version),
 		OS:             mappedOS,
 		Arch:           mappedArch,
 		ReleaseVersion: releaseVersion,
@@ -258,16 +260,10 @@ func (p *runtimePlugin) getDownloadURL(version string) string {
 
 	releaseVersion := p.getReleaseVersion()
 
-	// Extract major version from version string (e.g. "17.0.10" -> "17")
-	majorVersion := version
-	if idx := strings.Index(version, "."); idx != -1 {
-		majorVersion = version[:idx]
-	}
-
 	// Prepare template data
 	data := templateData{
 		Version:        version,
-		MajorVersion:   majorVersion,
+		MajorVersion:   p.getMajorVersion(version),
 		FileName:       fileName,
 		OS:             mappedOS,
 		Arch:           mappedArch,