feat(wsl-mover): pause a moving project's terminals through Sleep and prove they exited (D1b-5d) (#28820)

* feat(wsl-mover): pause a moving project's terminals through Sleep and prove they exited (D1b-5d)

* fix(wsl-mover): gate again under the fence, swap journal phases atomically, keep sessions frozen through commit (D1b-5d)

* test(wsl-mover): the fence e2e walks the journal one phase at a time, as a move writes it (D1b-5d)

src/shared/workspace-session-stranded-partition-adoption.ts

@@ -266,6 +266,14 @@ function entryWorkspaceResolver(
 export function withoutWorkspaces(
   base: WorkspaceSessionState,
   workspaceIds: ReadonlySet<string>
+): WorkspaceSessionState {
+  return filterWorkspaceRows(base, (workspaceId) => !workspaceIds.has(workspaceId))
+}
+
+/** The scoped rows of the workspaces kept, by the same routing; global fields stay as they are. */
+export function filterWorkspaceRows(
+  base: WorkspaceSessionState,
+  keepsWorkspace: (workspaceId: string) => boolean
 ): WorkspaceSessionState {
   const worktreeIdByTabId = buildWorktreeIdByTabId(base)
   const worktreeIdByFileId = buildWorktreeIdByFileId(base)
@@ -273,7 +281,7 @@ export function withoutWorkspaces(
   for (const field of SESSION_FIELDS) {
     const workspaceOf = entryWorkspaceResolver(field, worktreeIdByTabId, worktreeIdByFileId)
     const keeps = (key: string, entry: unknown): boolean =>
-      !workspaceIds.has(normalizeWorkspaceSessionKeyToWorkspaceId(workspaceOf?.(key, entry) ?? ''))
+      keepsWorkspace(normalizeWorkspaceSessionKeyToWorkspaceId(workspaceOf?.(key, entry) ?? ''))
     const value: unknown = base[field]
     if (!workspaceOf || !value) {
       continue

src/shared/worktree-sleep-request.ts

@@ -0,0 +1,12 @@
+/** Main asks the renderer to Sleep workspaces and waits until their slept state is durable. */
+export type WorktreeSleepRequest = {
+  requestId: string
+  worktreeIds: string[]
+}
+
+export type WorktreeSleepResponse = {
+  requestId: string
+  /** Workspaces whose Sleep failed; they stay awake and retryable. */
+  failedWorktreeIds?: string[]
+  error?: string
+}