fix(tui): close resume handoff races

packages/session-persistence/session-persistence-sqlite/tests/sqlite.spec.ts

@@ -1,4 +1,4 @@
-import { afterEach, describe, expect, it } from 'vitest'
+import { afterEach, describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import { existsSync } from 'node:fs'
 import { chmod, mkdtemp, rm, stat, symlink, writeFile } from 'node:fs/promises'
@@ -13,7 +13,10 @@ import { runPersistenceContract, meta, oneTurnLog, appendLog } from '../../sessi
 import { runCoordinatorContract, type CoordinatorFixture } from '../../session-persistence/tests/coordinator-contract.ts'
 
 const dirs: string[] = []
-afterEach(async () => { for (const d of dirs.splice(0)) await rm(d, { recursive: true, force: true }) })
+afterEach(async () => {
+  vi.restoreAllMocks()
+  for (const d of dirs.splice(0)) await rm(d, { recursive: true, force: true })
+})
 
 async function expectFlushError(promise: Promise<unknown>, message: RegExp): Promise<void> {
   try {
@@ -465,9 +468,16 @@ describe('SessionPersistenceSqlite: edge cases', () => {
     await b.ctx.sessionPersistence.list()
     const concrete = b.ctx.sessionPersistence as SessionPersistenceSqlite
     const owner = sessionLiveOwner()
+    const occupiedPid = process.pid + 1
+    const originalKill = process.kill.bind(process)
+    vi.spyOn(process, 'kill').mockImplementation((pid, signal) => {
+      if (pid === occupiedPid) return true
+      return originalKill(pid, signal)
+    })
     const db = openDatabase(path, 'wal')
     const insert = db.prepare('INSERT INTO live_session_leases (session_id, pid, nonce) VALUES (?, ?, ?)')
-    insert.run('occupied-lease', process.pid, 'another-owner')
+    insert.run('occupied-lease', occupiedPid, 'another-owner')
+    insert.run('reused-pid', process.pid, 'prior-incarnation')
     insert.run('stale-claim', 2_147_483_647, 'dead-owner')
     insert.run('stale-inspect', 2_147_483_647, 'dead-owner')
     insert.run('owned-inspect', owner.pid, owner.nonce)
@@ -475,11 +485,13 @@ describe('SessionPersistenceSqlite: edge cases', () => {
 
     await expect(concrete.acquireLive(SessionId('occupied-lease'), owner))
       .rejects.toThrow('occupied by another live process')
+    const reused = await concrete.acquireLive(SessionId('reused-pid'), owner)
     const claim = await concrete.acquireLive(SessionId('stale-claim'), owner)
     expect(await concrete.inspectLive(SessionId('owned-inspect'), owner)).toBe(true)
     expect(await concrete.inspectLive(SessionId('stale-inspect'), owner)).toBe(false)
     expect(await concrete.inspectLive(SessionId('missing-inspect'), owner)).toBe(false)
     await claim()
+    await reused()
     await b.dispose()
 
     const memory = new Context()