fix: retry logic for 'marked for deletion' Windows SCM race

- Clean up both sc.exe and nssm services before install
- Wait 1s after remove for SCM to release
- Retry up to 3x with 3s delay if 'marked for deletion'
- Added import time for sleep calls

service.v

@@ -1,6 +1,7 @@
 module main
 
 import os
+import time
 
 pub fn service_install(config_path string, quiet bool) ! {
 	exe_path := os.executable()
@@ -36,16 +37,35 @@ pub fn service_install(config_path string, quiet bool) ! {
 		}
 		println('  Using nssm: ${nssm_exe}')
 
-		// Remove previous install if exists
-		os.execute('"${nssm_exe}" stop ${name}')
-		os.execute('"${nssm_exe}" remove ${name} confirm')
+		// Remove previous installs (both sc.exe and nssm)
+		os.execute('sc stop ${name} 2>nul')
+		os.execute('sc delete ${name} 2>nul')
+		os.execute('"${nssm_exe}" stop ${name} 2>nul')
+		os.execute('"${nssm_exe}" remove ${name} confirm 2>nul')
 
-		// Install the service
-		r := os.execute('"${nssm_exe}" install ${name} "${exe_path}" ${args}')
-		if r.exit_code != 0 {
+		// Wait for SCM to release any "marked for deletion" state
+		time.sleep(1 * time.second)
+
+		// Install the service (retry up to 3 times for "marked for deletion")
+		mut installed := false
+		for attempt := 1; attempt <= 3; attempt++ {
+			r := os.execute('"${nssm_exe}" install ${name} "${exe_path}" ${args}')
+			if r.exit_code == 0 {
+				installed = true
+				break
+			}
+			if r.output.contains('marked for deletion') {
+				println('  Service still marked for deletion, waiting...')
+				time.sleep(3 * time.second)
+				continue
+			}
 			eprintln('nssm install failed: ${r.output}')
 			exit(1)
 		}
+		if !installed {
+			eprintln('nssm install failed after 3 attempts. Close services.msc and try again.')
+			exit(1)
+		}
 		println('  Service registered.')
 
 		// Configure service