test(terminal): pin the spawn watchdog against main's real daemon timeouts

The budget test imported the startup gate but hand-copied the daemon client's
connect and request timeouts, because those were module-private. Raising
REQUEST_TIMEOUT_MS in main would then leave the watchdog silently short and the
test still green — the drift it exists to catch.

Move the three to an import-free module both sides can read, and note in each
pinned file that it is typechecked under the web config so it stays that way.

config/tsconfig.tc.web.json

@@ -38,6 +38,7 @@
     "../src/main/persistence/applying-settings/ui-selection-normalization.ts",
     "../src/main/persistence/applying-settings/ui-interaction-merge.ts",
     "../src/main/protected-secret-persistence.ts",
+    "../src/main/daemon/rpc-timeouts.ts",
     "../src/main/startup/first-window-startup-services.ts",
     "../src/main/startup/serve-desktop-activation.ts",
     "../src/main/startup/serve-mode-argv.ts",

src/main/daemon/client.ts

@@ -2,6 +2,7 @@ import type { Socket } from 'node:net'
 import { readFileSync } from 'node:fs'
 import { randomUUID } from 'node:crypto'
 import { encodeNdjson } from './ndjson'
+import { CONNECTION_ATTEMPT_WAIT_MS, CONNECT_TIMEOUT_MS, REQUEST_TIMEOUT_MS } from './rpc-timeouts'
 import {
   PROTOCOL_VERSION,
   NOTIFY_PREFIX,
@@ -25,9 +26,6 @@ import {
 import { writeNotifyWithSettlement } from './daemon-client-notify-settlement'
 import { requestDaemonRpc } from './daemon-client-rpc-request'
 
-const CONNECT_TIMEOUT_MS = 5000
-const CONNECTION_ATTEMPT_WAIT_MS = CONNECT_TIMEOUT_MS * 4
-const REQUEST_TIMEOUT_MS = 30000
 const NOTIFY_SETTLEMENT_TIMEOUT_MS = 5000
 
 export type DaemonClientOptions = {

src/main/daemon/rpc-timeouts.ts

@@ -0,0 +1,6 @@
+// Why these live apart from the client: the renderer's spawn-settlement watchdog must
+// outlast them, and its budget test imports them from here to prove it still does. That
+// test typechecks under the web config, so this file must stay import-free.
+export const CONNECT_TIMEOUT_MS = 5000
+export const CONNECTION_ATTEMPT_WAIT_MS = CONNECT_TIMEOUT_MS * 4
+export const REQUEST_TIMEOUT_MS = 30000

src/main/startup/first-window-startup-services.ts

@@ -22,6 +22,9 @@ export const FIRST_WINDOW_STARTUP_SERVICE_TIMEOUT_MS = 12_000
 // them lose their daemon sessions permanently (#5232). The PTY gate therefore
 // waits for the daemon attempt itself and only fail-opens at a hard cap that
 // exists solely as a deadlock backstop.
+// The renderer's spawn-settlement watchdog must outlast this, and its budget test
+// imports it from here — so this file is typechecked under the web config too and
+// must stay import-free.
 export const LOCAL_PTY_STARTUP_FAIL_OPEN_TIMEOUT_MS = 60_000
 
 function startService(

src/renderer/src/components/terminal-pane/pty-connection/spawn-settlement-watchdog-budget.test.ts

@@ -1,5 +1,9 @@
 import { describe, expect, it } from 'vitest'
 import { LOCAL_PTY_STARTUP_FAIL_OPEN_TIMEOUT_MS } from '../../../../../main/startup/first-window-startup-services'
+import {
+  CONNECTION_ATTEMPT_WAIT_MS,
+  REQUEST_TIMEOUT_MS
+} from '../../../../../main/daemon/rpc-timeouts'
 import {
   REMOTE_RUNTIME_SPAWN_SETTLEMENT_WATCHDOG_MS,
   SPAWN_SETTLEMENT_WATCHDOG_MS
@@ -13,12 +17,8 @@ import { REMOTE_RUNTIME_AUTO_RECOVERY_TIMEOUT_MS } from '../remote-runtime-pty-r
 describe('spawn settlement watchdog budget', () => {
   // Sequential, not overlapping: pty:spawn awaits the startup gate, and only then
   // does the daemon client spend its connection-attempt wait plus one request timeout.
-  const DAEMON_CONNECTION_ATTEMPT_WAIT_MS = 5_000 * 4
-  const DAEMON_REQUEST_TIMEOUT_MS = 30_000
   const worstLegitimateLocalSettleMs =
-    LOCAL_PTY_STARTUP_FAIL_OPEN_TIMEOUT_MS +
-    DAEMON_CONNECTION_ATTEMPT_WAIT_MS +
-    DAEMON_REQUEST_TIMEOUT_MS
+    LOCAL_PTY_STARTUP_FAIL_OPEN_TIMEOUT_MS + CONNECTION_ATTEMPT_WAIT_MS + REQUEST_TIMEOUT_MS
 
   it('outlasts the slowest settle a local cold start can legitimately take', () => {
     expect(SPAWN_SETTLEMENT_WATCHDOG_MS).toBeGreaterThan(worstLegitimateLocalSettleMs)
@@ -26,7 +26,7 @@ describe('spawn settlement watchdog budget', () => {
 
   it('keeps real headroom over that worst case rather than racing it', () => {
     expect(SPAWN_SETTLEMENT_WATCHDOG_MS - worstLegitimateLocalSettleMs).toBeGreaterThanOrEqual(
-      DAEMON_REQUEST_TIMEOUT_MS
+      REQUEST_TIMEOUT_MS
     )
   })