chore(deps): update all tool versions across the codebase

Update to latest stable versions:
- pnpm: 9.12.0 → 10.26.0
- Docker: 28.5.0/28.5.2 → 29.1.3
- Nixpacks: 1.39.0 → 1.41.0
- Railpack: 0.2.2/0.15.0 → 0.15.1
- buildpacks/pack: 0.35.0 → 0.39.1

Files updated:
- All Dockerfiles (main, schedule, cloud, server)
- All package.json files (root, server, api, schedules, dokploy)
- GitHub workflow (pull-request.yml)
- Server setup script
- Database schema and DBML files
- Test fixtures
- UI components

schema.dbml

@@ -276,7 +276,7 @@ table application {
   replicas integer [not null, default: 1]
   applicationStatus applicationStatus [not null, default: 'idle']
   buildType buildType [not null, default: 'nixpacks']
-  railpackVersion text [default: '0.2.2']
+  railpackVersion text [default: '0.15.1']
   herokuVersion text [default: '24']
   publishDirectory text
   isStaticSpa boolean