PR 20306 restart continuation regression verification

Base: origin/main 5307c233b1
Head: 63e22e0967bbeb1b09a39dbede5a4f1d1292d06c
One existing file, 51 tests before and after takeover. Restart assertions simplified from five to four.

Unfixed base production implementation with takeover tests:
note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead.

 RUN  v5.0.1 /home/ubuntu/wt/usage-billing-01/apps/server

stdout | src/orchestration-v2/RestartContinuation.test.ts > stops rapid restart loops but allows repeated restarts after normal work
[14:58:29.164] ERROR (#353): Error [AssertionError]: expected [] to have a length of 1 but got +0
    at /home/ubuntu/wt/usage-billing-01/apps/server/src/orchestration-v2/RestartContinuation.test.ts:1185:14 {
  actual: 0,
  expected: 1,
  showDiff: true,
  [cause]: undefined
}

 ❯ src/orchestration-v2/RestartContinuation.test.ts (51 tests | 1 failed) 107ms
   × stops rapid restart loops but allows repeated restarts after normal work 13ms

⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯

 FAIL  src/orchestration-v2/RestartContinuation.test.ts > stops rapid restart loops but allows repeated restarts after normal work
AssertionError: expected [] to have a length of 1 but got +0

- Expected
+ Received

- 1
+ 0

 ❯ src/orchestration-v2/RestartContinuation.test.ts:1185:14
    1183|         })),
    1184|       };
    1185|       assert.lengthOf(yield* continuationTexts(projection), expected);
       |              ^
    1186|     }
    1187|   }),
 ❯ IteratorImpl.~effect/Effect/successCont ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:1422:28
 ❯ FiberImpl.succeedWith ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:711:30
 ❯ ContImpl.mapCont [as ~effect/Effect/successCont] ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:1527:16
 ❯ ExitPrimitive.~effect/Effect/evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/core.ts:585:30
 ❯ FiberImpl.runLoop ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:654:41
 ❯ FiberImpl.evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:595:23
 ❯ ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:5689:9
 ❯ ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:5767:19

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯


 Test Files  1 failed (1)
      Tests  1 failed | 50 passed (51)
   Start at  14:58:19
   Duration  9.35s (transform 69%, import 28%, tests 1%, setup 1%)

  Transform  transforming modules took 6.38s · 69% of tracked time, re-done on every run
             persist transforms across runs with fsModuleCache: true
             learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns


Restored implementation:
note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead.

 RUN  v5.0.1 /home/ubuntu/wt/usage-billing-01/apps/server


 Test Files  1 passed (1)
      Tests  51 passed (51)
   Start at  14:58:41
   Duration  9.34s (transform 70%, import 28%, tests 1%, setup 1%)

  Transform  transforming modules took 6.41s · 70% of tracked time, re-done on every run
             persist transforms across runs with fsModuleCache: true
             learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns


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