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

packages/server/src/db/schema/application.ts

@@ -177,7 +177,7 @@ export const applications = pgTable("application", {
 		.notNull()
 		.default("idle"),
 	buildType: buildType("buildType").notNull().default("nixpacks"),
-	railpackVersion: text("railpackVersion").default("0.2.2"),
+	railpackVersion: text("railpackVersion").default("0.15.1"),
 	herokuVersion: text("herokuVersion").default("24"),
 	publishDirectory: text("publishDirectory"),
 	isStaticSpa: boolean("isStaticSpa"),