Add E2B PTY, LSP, and code runtime providers

packages/lsp/lsp-local/tests/fixture-server.ts

@@ -15,6 +15,7 @@
  * - LSP_FAKE_REPLY_DELAY_MS: delays each textDocument/* response by this many milliseconds.
  * - LSP_FAKE_OPEN_MARKER: appends each didOpen document text as one JSON line to this path.
  * - LSP_FAKE_INITIALIZED_MARKER: records when the initialized notification is received.
+ * - LSP_FAKE_EXPECT_PROCESS_ID: expected JSON `initialize.processId`; mismatch exits nonzero.
  * - LSP_FAKE_PAUSE_STDIN_AFTER_INITIALIZED: "1" stops consuming stdin after initialized.
  * - LSP_FAKE_EXIT_DELAY_MS / LSP_FAKE_EXIT_MARKER: delay protocol exit and record exit/termination.
  * - LSP_FAKE_NO_SHUTDOWN: "1" ignores the shutdown request (forces kill escalation).
@@ -37,6 +38,7 @@ const exitAfterReply = process.env.LSP_FAKE_EXIT_AFTER_REPLY === '1'
 const replyDelayMs = Number(process.env.LSP_FAKE_REPLY_DELAY_MS ?? 0)
 const openMarker = process.env.LSP_FAKE_OPEN_MARKER
 const initializedMarker = process.env.LSP_FAKE_INITIALIZED_MARKER
+const expectedProcessId = process.env.LSP_FAKE_EXPECT_PROCESS_ID
 const pauseStdinAfterInitialized = process.env.LSP_FAKE_PAUSE_STDIN_AFTER_INITIALIZED === '1'
 const exitDelayMs = Number(process.env.LSP_FAKE_EXIT_DELAY_MS ?? 0)
 const exitMarker = process.env.LSP_FAKE_EXIT_MARKER
@@ -102,6 +104,10 @@ function handle(message: { id?: number; method?: string; params?: unknown; resul
     return
   }
   if (method === 'initialize') {
+    if (expectedProcessId !== undefined) {
+      const params = message.params as { processId?: unknown } | undefined
+      if (JSON.stringify(params?.processId) !== expectedProcessId) process.exit(2)
+    }
     if (garbage) process.stdout.write('this is not a framed message\r\n')
     send({
       id,

packages/lsp/lsp-local/tests/instance.spec.ts

@@ -109,6 +109,11 @@ const RESPONDING_SERVER =
 const locJson = () => JSON.stringify({ uri: pathToFileURL(join(ws, 'a.ts')).href, range: { start: { line: 0, character: 0 }, end: { line: 0, character: 3 } } })
 
 describe('LspInstance server-request handling', () => {
+  it('advertises a null process id across process namespaces', async () => {
+    const instance = makeInstance({ LSP_FAKE_EXPECT_PROCESS_ID: 'null', LSP_FAKE_DEF: 'null' }, { clientProcessId: null })
+    await expect(run(instance, 'goToDefinition')).resolves.toMatchObject({ kind: 'locations' })
+  })
+
   it('answers workspace/configuration with the static config per item', async () => {
     const instance = makeInstance({ LSP_FAKE_ON_OPEN: 'configuration', LSP_FAKE_DEF: locJson() })
     // The query drives didOpen, which makes the fake emit workspace/configuration; a healthy answer