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fix(engine): preserve step progress + worktree across internal task bounces

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Workflow-step REVISE retries, pause→todo handoffs, and the
context-overflow fresh-session requeue were all routing tasks back to
`todo` before returning to `in-progress`. The default reopen-to-todo
path reset every step to pending and rewrote PROMPT.md checkboxes, so
each retry restarted from step 0 even when earlier steps had already
been done — the symptom seen on FN-2978, where every workflow REVISE
or pause cycle wiped the task's progress.

- Add `preserveResumeState` to `TaskStore.moveTask`. When set, skip
  `resetAllStepsToPending` + `resetPromptCheckboxes` and keep
  `worktree` and `executionStartedAt` so the resumed run reattaches to
  the same checkout. `status`, `error`, and `blockedBy` still clear.
- Use it on the workflow-rerun bounce, the three pause-graceful
  handoffs, and the context-overflow requeue. The agent-terminated
  pause path still discards (it nukes worktree+branch by design).
- Context-overflow requeue clears `sessionFile` synchronously in the
  awaited `updateTask` immediately before `moveTask`, so the next
  dispatch cannot reopen the saturated session via a stale pointer.
- `fn_task_update` no longer silently regresses `done`/`skipped` steps
  to `in-progress`, no longer captures a stale rewind checkpoint when
  it does, and tells the agent honestly when a regression is ignored.
- Mobile chat keyboard: ChatView/QuickChatFAB gate layout on the new
  `keyboardOpen` flag so focused-input + viewport-shrink iOS cases
  still adjust when the computed overlap is zero.

Tests:
- New `preserveResumeState` coverage in store.test.ts; updated
  workflow-rerun + pause-graceful assertions in executor.test.ts.
- Restructured the previously-flaky "routes exhausted prompt-mode
  workflow hard failures" test to drive the bounce inline; passes in
  isolation and in the wider workflow/pause/context sweep (59/59).
- Added regression tests in ChatView.test.tsx and QuickChatFAB.test.tsx
  for the iOS last-resort `keyboardOpen=true, keyboardOverlap=0` case.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
gsxdsm
2026-04-30 14:12:03 -07:00
parent 05ff8bd698
commit 98c3c22344
11 changed files with 466 additions and 142 deletions
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"@runfusion/fusion": patch
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Stop wiping accumulated step progress and the worktree pointer on internal task bounces. Workflow-step REVISE retries, pause→todo handoffs, and the context-overflow fresh-session requeue all moved tasks back to `todo` before returning to `in-progress`, and the default reopen-to-todo path was resetting every step to `pending` and rewriting PROMPT.md checkboxes — so each retry restarted the agent from step 0 even though earlier steps were already done. `moveTask` now accepts a `preserveResumeState` flag that the executor sets on those internal hops; user-initiated "move back to todo" still gets the clean-slate behavior. The context-overflow path additionally clears `sessionFile` synchronously so the next dispatch can no longer reopen the saturated session. `fn_task_update` no longer silently regresses a `done`/`skipped` step to `in-progress`, no longer captures a stale rewind checkpoint when it does, and tells the agent honestly when a regression is ignored. Mobile chat keyboard handling now keeps the layout adjusted on iOS even when the visual-viewport overlap reads as zero (focused input + viewport shrink).