fix(web): improve skills after haiku agent testing

- web-unpublish: add -All flag to remove all publications at once
- web-stop: add hint about /web-unpublish after stopping
- web-publish SKILL.md: emphasize mandatory -V8Path/-UserName params
- Fix Port default comment (8080 → 8081)
- Clean up descriptions: semantic matching only, no technical details
- web-guide: add "delete all" scenario

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/skills/web-stop/scripts/web-stop.ps1

@@ -70,6 +70,7 @@ while ($elapsed -lt $maxWait) {
     $check = Get-OurHttpd
     if (-not $check) {
         Write-Host "Apache остановлен" -ForegroundColor Green
+        Write-Host "Публикации сохранены. Для удаления: /web-unpublish <имя> или /web-unpublish --all" -ForegroundColor Gray
         exit 0
     }
 }
@@ -88,3 +89,4 @@ if ($remaining) {
 }
 
 Write-Host "Apache остановлен" -ForegroundColor Green
+Write-Host "Публикации сохранены. Для удаления: /web-unpublish <имя> или /web-unpublish --all" -ForegroundColor Gray