fix(sidebar): retain legacy SSH folder rows

src/renderer/src/components/sidebar/worktree-list-groups.test.ts

@@ -6,7 +6,9 @@ import { getExecutionHostLabel } from '../../../../shared/execution-host'
 import { projectHostSetupProjectionFromRepos } from '../../../../shared/project-host-setup-projection'
 import {
   ALL_GROUP_META,
+  buildProjectGroupSidebarIndex,
   buildRows,
+  findProjectGroupForFolderWorkspace,
   getGroupKeyForWorktree,
   getGroupKeysForWorktree,
   getLineageGroupKey,
@@ -3154,11 +3156,12 @@ describe('project groups', () => {
     })
   })
 
-  it('renders folder workspaces under their owning folder-backed Project Group', () => {
+  it('renders a legacy SSH folder under its unambiguous local-stamped Project Group', () => {
     const group: ProjectGroup = {
       id: 'group-root',
       name: 'Platform',
       parentPath: '/monorepo',
+      executionHostId: 'local',
       parentGroupId: null,
       createdFrom: 'folder-scan',
       tabOrder: 0,
@@ -3172,6 +3175,8 @@ describe('project groups', () => {
       projectGroupId: group.id,
       name: 'Refund fix',
       folderPath: '/monorepo',
+      connectionId: 'builder',
+      executionHostId: 'ssh:builder',
       linkedTask: null,
       comment: '',
       isArchived: false,
@@ -3218,6 +3223,13 @@ describe('project groups', () => {
         groupDepth: 1
       }
     ])
+    const collidingGroup = { ...group, executionHostId: 'runtime:env-1' }
+    expect(
+      findProjectGroupForFolderWorkspace(
+        buildProjectGroupSidebarIndex([group, collidingGroup]),
+        folderWorkspace
+      )
+    ).toBeUndefined()
   })
 
   it('preserves nested Project Group depth for folder workspace rows', () => {

src/renderer/src/components/sidebar/worktree-list-groups.ts

@@ -205,7 +205,20 @@ export function findProjectGroupForFolderWorkspace(
       : workspace.connectionId === null
         ? LOCAL_EXECUTION_HOST_ID
         : undefined)
-  return findProjectGroupForSidebarOwner(index, workspace.projectGroupId, ownerHostId)
+  const exact = findProjectGroupForSidebarOwner(index, workspace.projectGroupId, ownerHostId)
+  if (
+    exact ||
+    !workspace.connectionId ||
+    ownerHostId !== toSshExecutionHostId(workspace.connectionId)
+  ) {
+    return exact
+  }
+  const legacyGroup = index.byUnambiguousId.get(workspace.projectGroupId)
+  return legacyGroup !== undefined &&
+    legacyGroup.connectionId === undefined &&
+    getProjectGroupOwnerHostId(legacyGroup) === LOCAL_EXECUTION_HOST_ID
+    ? legacyGroup
+    : undefined
 }
 
 export function getAmbiguousFolderWorkspaceSidebarIds(