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openspec/changes/enterprise-server-sandbox/proposal.md

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+# OpenSpec Change: enterprise-server-sandbox
+
+- **Change ID**: enterprise-server-sandbox
+- **Package**: `@suaveplan/sandbox`
+- **Category**: server/infra
+- **Target path**: `server/infra/sandbox`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/sandbox.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/sandbox` on the genesis branch from scratch at enterprise quality. The package provides an isolated code execution sandbox for running untrusted or user-supplied JavaScript/TypeScript snippets. It supports two backends: a `WorkerSandbox` using Bun's `Worker` API (in-process isolation) and a `ProcessSandbox` using `Bun.spawn` for stronger OS-level isolation. Both expose `run(code, context, options): Promise<SandboxResult>` with configurable resource limits (CPU timeout, memory limit, I/O restrictions), structured output capture, and abort signal support. Genesis adds Zod-validated options, `@suaveplan/error` codes, OTel spans, and comprehensive security-oriented tests.
+
+---
+
+## Current-state audit (genesis)
+
+Does not exist on genesis — fresh build.
+
+---
+
+## Available workspace deps on genesis
+
+| Package | Role |
+|---|---|
+| `@suaveplan/error` (`workspace:^`) | Typed `SANDBOX.*` error codes |
+| `@suaveplan/types` (`workspace:^`) | `LoggerLike` |
+| `@suaveplan/logger` (`workspace:^`) | Structured logs |
+| `zod` (`catalog:forms`) | Options validation |
+| `@opentelemetry/api` (`catalog:observability`) | Spans + counters + histograms |
+| `tslib` (`catalog:build`) | Runtime helpers |
+
+---
+
+## Public API surface
+
+```ts
+interface Sandbox {
+  run(code: string, context?: SandboxContext, options?: RunOptions): Promise<SandboxResult>
+  dispose(): Promise<void>
+}
+
+function createWorkerSandbox(options?: SandboxOptions): Sandbox
+function createProcessSandbox(options?: SandboxOptions): Sandbox
+
+interface SandboxOptions {
+  timeoutMs?: number        // default: 5000
+  memoryLimitMb?: number    // default: 128
+  allowNetwork?: boolean    // default: false
+  allowFs?: boolean         // default: false
+  logger?: LoggerLike
+}
+
+type SandboxContext = Record<string, unknown>   // serializable globals injected into sandbox
+
+interface RunOptions {
+  timeoutMs?: number        // override per-run
+  signal?: AbortSignal
+}
+
+interface SandboxResult {
+  ok: boolean
+  value?: unknown           // returned value (JSON-serializable)
+  stdout: string
+  stderr: string
+  duration: number
+  exitCode?: number
+  error?: string
+}
+
+type SandboxErrorCode =
+  | 'SANDBOX_TIMEOUT'
+  | 'SANDBOX_MEMORY_EXCEEDED'
+  | 'SANDBOX_EXECUTION_ERROR'
+  | 'SANDBOX_INVALID_CODE'
+  | 'SANDBOX_DISPOSED'
+
+function registerSandboxErrorCodes(): void
+```
+
+---
+
+## File layout
+
+```text
+server/infra/sandbox/
+  package.json
+  tsconfig.json
+  vitest.config.ts
+  src/
+    index.ts
+    error-codes.ts
+    constants/index.ts
+    types/
+      sandbox.types.ts
+      sandbox.types.md
+    worker/
+      worker-sandbox/
+        worker-sandbox.ts
+        worker-sandbox.md
+        worker-sandbox.types.ts
+        worker-sandbox.test.ts
+        index.ts
+      sandbox-worker-script.ts   # Worker inner script
+    process/
+      process-sandbox/
+        process-sandbox.ts
+        process-sandbox.md
+        process-sandbox.types.ts
+        process-sandbox.test.ts
+        index.ts
+  tests/
+    security.test.ts
+    integration.test.ts
+```
+
+---
+
+## Impact
+
+Downstream: user-defined rule engines, server-side template execution, AI tool calls. Server-only, Bun runtime required.
+
+**Prerequisites on Verdaccio**: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/logger`.