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FN-5846: route shared-group member finalization to shared branch

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Ensure shared branch-group members keep their routed shared-branch target through merge finalization and recovery.

- ignore a shared member's default-base branch when resolving branch-group merge routing
- reroute merge-confirmed fast paths and self-healing recovery flows to the branch-group integration branch
- stamp merge target metadata, record member landings, and add regression coverage plus architecture/changeset updates

Files changed:
 .changeset/fn-5846-shared-group-merge-routing.md   |   5 +
 docs/architecture.md                               |   4 +-
 packages/engine/src/__tests__/group-merge-coordinator.test.ts  |  26 +++
 packages/engine/src/__tests__/reliability-interactions/shared-branch-group-lifecycle.test.ts  |  73 +++++--
 packages/engine/src/group-merge-coordinator.ts     |  11 +-
 packages/engine/src/project-engine.ts              |  49 ++++-
 packages/engine/src/self-healing.ts                | 212 ++++++++++++++++++++-
 7 files changed, 357 insertions(+), 23 deletions(-)

Fusion-Task-Id: FN-5846

Fusion-Task-Lineage: c8fbf8b8-3cbe-4ee5-96d9-9040bd4f0df5
This commit is contained in:
gsxdsm
2026-06-01 20:19:37 -07:00
parent 0a418e6875
commit e561290174
7 changed files with 357 additions and 23 deletions
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73
packages/engine/src/__tests__/reliability-interactions/shared-branch-group-lifecycle.test.ts
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@@ -5,6 +5,7 @@ import { describe, expect, it } from "vitest";
import { type TaskStore } from "@fusion/core";
import { evaluateBranchGroupCompletion, promoteBranchGroup } from "../../group-merge-coordinator.js";
import { aiMergeTask } from "../../merger.js";
import { SelfHealingManager } from "../../self-healing.js";
import { acquireTaskWorktree } from "../../worktree-acquisition.js";
import { canonicalFusionBranchName, resolveTaskWorkingBranch } from "../../worktree-names.js";
import { git, hasGit, makeReliabilityFixture } from "./_helpers.js";
@@ -122,6 +123,12 @@ describe("FN-5820 reliability interactions: shared branch group lifecycle", () =
const secondResult = await aiMergeTask(store, rootDir, second.id);
expect(firstResult.merged).toBe(true);
expect(secondResult.merged).toBe(true);
const firstAfterMerge = await store.getTask(task.id);
const secondAfterMerge = await store.getTask(second.id);
expect(firstAfterMerge?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(firstAfterMerge?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
expect(secondAfterMerge?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(secondAfterMerge?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
expect(git(rootDir, `git show ${group.branchName}:packages/engine/src/fn5820Case2A.ts`)).toContain("fn5820Case2A");
expect(git(rootDir, `git show ${group.branchName}:packages/engine/src/fn5820Case2B.ts`)).toContain("fn5820Case2B");
@@ -181,10 +188,10 @@ describe("FN-5820 reliability interactions: shared branch group lifecycle", () =
const firstMerge = await aiMergeTask(store, rootDir, task.id);
expect(firstMerge.merged).toBe(true);
await store.updateTask(task.id, {
column: "done",
mergeDetails: { ...(await store.getTask(task.id))?.mergeDetails, mergeTargetSource: "branch-group-integration" },
} as any);
const firstMergedTask = await store.getTask(task.id);
expect(firstMergedTask?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(firstMergedTask?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
await store.updateTask(task.id, { column: "done" } as any);
const incomplete = await promoteBranchGroup({
store,
@@ -197,10 +204,10 @@ describe("FN-5820 reliability interactions: shared branch group lifecycle", () =
const secondMerge = await aiMergeTask(store, rootDir, second.id);
expect(secondMerge.merged).toBe(true);
await store.updateTask(second.id, {
column: "done",
mergeDetails: { ...(await store.getTask(second.id))?.mergeDetails, mergeTargetSource: "branch-group-integration" },
} as any);
const secondMergedTask = await store.getTask(second.id);
expect(secondMergedTask?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(secondMergedTask?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
await store.updateTask(second.id, { column: "done" } as any);
const promoteWithMembers = async (recordAudit?: (event: { mutationType: string; metadata?: Record<string, unknown> }) => void) => promoteBranchGroup({
store: {
@@ -269,14 +276,20 @@ describe("FN-5820 reliability interactions: shared branch group lifecycle", () =
expect((await aiMergeTask(store, rootDir, task.id)).merged).toBe(true);
expect((await aiMergeTask(store, rootDir, second.id)).merged).toBe(true);
const firstMergedTask = await store.getTask(task.id);
const secondMergedTask = await store.getTask(second.id);
expect(firstMergedTask?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(firstMergedTask?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
expect(secondMergedTask?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(secondMergedTask?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
expect(git(rootDir, `git show ${group.branchName}:packages/engine/src/fn5820Case4A.ts`)).toContain("fn5820Case4A");
expect(git(rootDir, `git show ${group.branchName}:packages/engine/src/fn5820Case4B.ts`)).toContain("fn5820Case4B");
expect(() => git(rootDir, "git show main:packages/engine/src/fn5820Case4A.ts")).toThrow();
expect(() => git(rootDir, "git show main:packages/engine/src/fn5820Case4B.ts")).toThrow();
await store.updateTask(task.id, { column: "done", mergeDetails: { ...(await store.getTask(task.id))?.mergeDetails, mergeTargetSource: "branch-group-integration" } } as any);
await store.updateTask(second.id, { column: "done", mergeDetails: { ...(await store.getTask(second.id))?.mergeDetails, mergeTargetSource: "branch-group-integration" } } as any);
await store.updateTask(task.id, { column: "done" } as any);
await store.updateTask(second.id, { column: "done" } as any);
const audits: Array<{ mutationType: string; metadata?: Record<string, unknown> }> = [];
const gated = await promoteBranchGroup({
@@ -311,7 +324,45 @@ describe("FN-5820 reliability interactions: shared branch group lifecycle", () =
}
}, 45_000);
it.skipIf(!hasGit)("CASE 5: per-task-derived and ungrouped tasks remain default-branch routed", async () => {
it.skipIf(!hasGit)("CASE 5: self-healing already-merged recovery stamps shared-branch routing metadata", async () => {
const fixture = await makeReliabilityFixture({ taskId: "FN-5820-RI-K", settings: { testMode: true, autoMerge: true } as any });
try {
const { rootDir, store, task } = fixture;
const group = store.createBranchGroup({
sourceType: "planning",
sourceId: "PS-FN5820-CASE5",
branchName: "fusion/groups/fn-5820-self-heal",
});
await stageSharedMember(store, rootDir, { taskId: task.id, groupId: group.id, source: "planning", fileName: "fn5820Case5SelfHeal" });
await store.setTaskBranchGroup(task.id, group.id);
expect((await aiMergeTask(store, rootDir, task.id)).merged).toBe(true);
expect(git(rootDir, `git show ${group.branchName}:packages/engine/src/fn5820Case5SelfHeal.ts`)).toContain("fn5820Case5SelfHeal");
expect(() => git(rootDir, "git show main:packages/engine/src/fn5820Case5SelfHeal.ts")).toThrow();
await store.updateTask(task.id, {
column: "in-review",
status: "failed",
error: "retry exhausted",
mergeRetries: 999,
mergeDetails: undefined,
} as any);
const manager = new SelfHealingManager(store, { rootDir, getExecutingTaskIds: () => new Set<string>() });
await manager.recoverAlreadyMergedReviewTasks();
const recovered = await store.getTask(task.id);
expect(recovered?.column).toBe("done");
expect(recovered?.mergeDetails?.mergeConfirmed).toBe(true);
expect(recovered?.mergeDetails?.mergeTargetSource).toBe("branch-group-integration");
expect(recovered?.mergeDetails?.mergeTargetBranch).toBe(group.branchName);
expect(Number(git(rootDir, `git rev-list --count main..${group.branchName}`).trim())).toBeGreaterThan(0);
expect(() => git(rootDir, "git show main:packages/engine/src/fn5820Case5SelfHeal.ts")).toThrow();
} finally {
await fixture.cleanup();
}
}, 45_000);
it.skipIf(!hasGit)("CASE 6: per-task-derived and ungrouped tasks remain default-branch routed", async () => {
const fixture = await makeReliabilityFixture({ taskId: "FN-5820-RI-I", settings: { testMode: true } as any });
try {
const { rootDir, store, task } = fixture;