Adds a PR-based revert path for done/archived tasks in autoMerge:false projects instead of refusing outright.
- New engine export `prepareRevertPrBranch` (packages/engine/src/task-revert.ts) prepares a dedicated `fusion/revert-<id>` branch off the base branch's HEAD and applies the revert commit(s) there, never mutating the base branch itself.
- `POST /api/tasks/:id/revert` route gains an additive `{ mode: "pr", clean: true, prUrl, prNumber, revertBranch, existingPr? }` result for clean single-repo reverts under autoMerge:false, reusing GitHubClient.createPr, findPrForBranch idempotency, and the manual:true PR handoff.
- Existing `{ mode: "git" | "ai", ... }` result shapes and the autoMerge:true path are unchanged.
- Workspace (multi-repo) tasks are explicitly refused for PR-based revert (out of scope; single PR cannot represent a multi-repo revert).
- Adds real-git integration tests for the new branch-prep/apply/commit flow and expands the dashboard route test coverage.
- Adds a changeset for @runfusion/fusion (minor) and a small task-management doc update.
Files changed:
.changeset/fn-7554-pr-based-revert.md | 7 +
docs/task-management.md | 2 +-
.../src/__tests__/task-revert-route.test.ts | 196 +++++++++++++++++++-
.../src/routes/register-task-workflow-routes.ts | 182 ++++++++++++++++++
.../src/__tests__/task-revert-pr.real-git.test.ts | 206 +++++++++++++++++++++
packages/engine/src/index.ts | 3 +
packages/engine/src/task-revert.ts | 154 +++++++++++++++
7 files changed, 747 insertions(+), 3 deletions(-)
Fusion-Task-Id: FN-7554
Fusion-Task-Lineage: 9b1bfd82-2428-4cf7-9b36-77afe3517a14
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
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