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cleveragents-core/features/revert_re_execution.feature
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brent.edwards b46a0e6102
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feat(plan): implement real revert-mode re-execution from decision point (#1153)
## Summary

Implements the full revert-mode re-execution pipeline from the specification (§ Correction Flow, Revert Mode), enabling `agents plan correct --mode=revert` to truly re-execute from the targeted decision point rather than only logically marking decisions as superseded.

### Changes

- **Resource rollback**: `CorrectionService.execute_revert` now delegates to `CheckpointService.rollback_to_checkpoint` when a decision-aligned checkpoint exists, performing real `git reset --hard` in the sandbox. Gracefully degrades when checkpointing is unavailable.
- **Reasoning rollback**: Extracts `actor_state_ref` from the target decision's `ContextSnapshot` for downstream LangGraph actor restoration.
- **Guidance injection**: Generates a `user_intervention` decision ID for callers to record correction guidance in the decision tree.
- **Phase transition**: Signals that the plan should re-enter Strategize via `phase_transition_target="strategize"` on the result.
- **Model extension**: Added `checkpoint_restored`, `actor_state_ref`, `user_intervention_decision_id`, and `phase_transition_target` fields to `CorrectionResult` with backward-compatible defaults.
- **Dispatch update**: `execute_correction` now accepts and forwards a `decisions` parameter.

### Design Approach

Uses a signal-based architecture: rather than having `CorrectionService` directly manipulate plan state or LangGraph actors, the enhanced `execute_revert` returns signal fields on `CorrectionResult` that downstream consumers use for the full pipeline. This preserves separation of concerns.

### Tests

- **Behave**: 16 new BDD scenarios in `features/revert_re_execution.feature`
- **Robot**: 7 integration tests in `robot/revert_re_execution.robot`
- **Coverage**: 98% (above 97% threshold)

### Quality Gates

| Gate | Status |
|------|--------|
| `nox -s lint` | Pass |
| `nox -s typecheck` | Pass (0 errors) |
| `nox -s unit_tests` | Pass (12376 scenarios, 0 failed) |
| `nox -s integration_tests` | Pass (1631 passed, 3 pre-existing failures #647) |
| `nox -s e2e_tests` | Pass (37 passed) |
| `nox -s coverage_report` | Pass (98%) |

Closes #844

Reviewed-on: #1153
Co-authored-by: Brent E. Edwards <brent.edwards@cleverthis.com>
Co-committed-by: Brent E. Edwards <brent.edwards@cleverthis.com>
2026-03-28 00:57:51 +00:00

141 lines
8.4 KiB
Gherkin

Feature: Revert-mode re-execution from decision point
As a plan correction user
I want revert mode to perform real checkpoint restoration, actor state
recovery, and re-execution signalling from the targeted decision point
So that the plan can resume Strategize with the corrected guidance
# Checkpoint restoration
Scenario: Revert with checkpoint service restores sandbox checkpoint
Given revexec a correction service with a mock checkpoint service
And revexec a checkpoint exists for plan "P1" decision "D1" with ref "abc123"
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result checkpoint_restored should be true
And revexec the result status should be "applied"
Scenario: Revert without checkpoint service skips checkpoint restoration
Given revexec a correction service without checkpoint service
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result checkpoint_restored should be false
And revexec the result status should be "applied"
Scenario: Revert with no matching checkpoint skips restoration
Given revexec a correction service with a mock checkpoint service
And revexec no checkpoint exists for plan "P1" decision "D1"
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result checkpoint_restored should be false
# ── Actor state restoration ────────────────────────────────────
Scenario: Revert extracts actor_state_ref from target decision
Given revexec a correction service without checkpoint service
And revexec a decision "D1" with actor_state_ref "lg-checkpoint-42"
And revexec a correction request targeting decision "D1" in plan "P1" for revert with decisions
When revexec I execute the revert correction with decisions
Then revexec the result actor_state_ref should be "lg-checkpoint-42"
Scenario: Revert without decisions mapping returns empty actor_state_ref
Given revexec a correction service without checkpoint service
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result actor_state_ref should be ""
# ── Phase transition ───────────────────────────────────────────
Scenario: Revert signals phase transition to strategize
Given revexec a correction service without checkpoint service
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result phase_transition_target should be "strategize"
# ── User intervention decision ─────────────────────────────────
Scenario: Revert creates a user_intervention decision ID
Given revexec a correction service without checkpoint service
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result user_intervention_decision_id should not be empty
# ── Guidance injection ─────────────────────────────────────────
Scenario: Revert with guidance propagates to attempt details
Given revexec a correction service without checkpoint service
And revexec a correction request targeting decision "D1" in plan "P1" for revert with guidance "Prioritize payments"
When revexec I execute the revert correction
Then revexec the result status should be "applied"
And revexec the attempt details should contain phase_transition_target
# ── Full re-execution flow ─────────────────────────────────────
Scenario: Full revert flow with checkpoint and actor state
Given revexec a correction service with a mock checkpoint service
And revexec a checkpoint exists for plan "P1" decision "D1" with ref "commit-sha-1"
And revexec a decision "D1" with actor_state_ref "lg-state-99"
And revexec a decision tree where "D1" has children "D2,D3"
And revexec a correction request targeting decision "D1" in plan "P1" for revert with decisions
When revexec I execute the revert correction with decisions and tree
Then revexec the result checkpoint_restored should be true
And revexec the result actor_state_ref should be "lg-state-99"
And revexec the result phase_transition_target should be "strategize"
And revexec the result user_intervention_decision_id should not be empty
And revexec the reverted decisions should contain "D1"
And revexec the reverted decisions should contain "D2"
And revexec the reverted decisions should contain "D3"
# ── Subtree selectivity ────────────────────────────────────────
Scenario: Revert only affects downstream decisions from target
Given revexec a correction service without checkpoint service
And revexec a two-level tree "ROOT" children "D1,D2" then "D1" children "D3"
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction with tree
Then revexec the reverted decisions should contain "D1"
And revexec the reverted decisions should contain "D3"
And revexec the reverted decisions should not contain "ROOT"
And revexec the reverted decisions should not contain "D2"
# ── Dispatch integration ───────────────────────────────────────
Scenario: Execute correction dispatch passes decisions to revert
Given revexec a correction service without checkpoint service
And revexec a decision "D1" with actor_state_ref "dispatch-state-ref"
And revexec a correction request targeting decision "D1" in plan "P1" for revert with decisions
When revexec I dispatch execute_correction with decisions
Then revexec the result actor_state_ref should be "dispatch-state-ref"
And revexec the result phase_transition_target should be "strategize"
# ── Error paths ─────────────────────────────────────────────────
Scenario: Revert handles checkpoint list failure gracefully
Given revexec a correction service with a failing checkpoint list
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result checkpoint_restored should be false
And revexec the result status should be "applied"
Scenario: Revert handles checkpoint rollback failure gracefully
Given revexec a correction service with a failing checkpoint rollback
And revexec a correction request targeting decision "D1" in plan "P1" for revert
When revexec I execute the revert correction
Then revexec the result checkpoint_restored should be false
And revexec the result status should be "applied"
Scenario: Revert with decision not in mapping returns empty actor state
Given revexec a correction service without checkpoint service
And revexec a decision "OTHER" with actor_state_ref "lg-state-miss"
And revexec a correction request targeting decision "D1" in plan "P1" for revert with decisions
When revexec I execute the revert correction with decisions
Then revexec the result actor_state_ref should be ""
# ── CorrectionResult model fields ──────────────────────────────
Scenario: CorrectionResult default revert fields
When revexec I create a CorrectionResult with only correction_id and status
Then revexec the result checkpoint_restored should be false
And revexec the result actor_state_ref should be ""
And revexec the result user_intervention_decision_id should be ""
And revexec the result phase_transition_target should be ""