refactor(e2b): compose portable runtime consumers

packages/e2b/e2b/src/index.ts

@@ -10,8 +10,6 @@ import z from 'schemastery'
 import { Sandbox } from 'e2b'
 import type { Branded } from '@deepseek-ai/dsh-brand'
 
-export { E2BFrameDecoder, encodeBoundedE2BFrame, encodeE2BFrame } from './frame.ts'
-
 export {
   CommandExitError,
   FileNotFoundError,
@@ -44,26 +42,6 @@ export function quoteE2BShellArg(value: string): string {
   return `'${value.replaceAll('\'', "'\"'\"'")}'`
 }
 
-/**
- * Resolve one executable inside an E2B sandbox and require an absolute result.
- * @param sandbox - Sandbox whose PATH and filesystem own the executable.
- * @param command - Absolute path or bare executable name.
- * @returns Verified absolute remote executable path.
- */
-export async function resolveE2BExecutable(sandbox: Sandbox, command: string): Promise<string> {
-  if (command.length === 0) throw new Error('E2B executable name must be non-empty')
-  if (posix.isAbsolute(command)) {
-    await sandbox.commands.run(`test -f ${quoteE2BShellArg(command)} -a -x ${quoteE2BShellArg(command)}`)
-    return command
-  }
-  const result = await sandbox.commands.run(`command -v -- ${quoteE2BShellArg(command)}`)
-  const executable = result.stdout.trim()
-  if (!posix.isAbsolute(executable) || executable.includes('\n')) {
-    throw new Error(`E2B executable ${JSON.stringify(command)} did not resolve to one absolute path`)
-  }
-  return executable
-}
-
 /** Action taken on the owned sandbox when the Cordis service is disposed. */
 export type E2BDisposeMode = 'kill' | 'pause' | 'leave'