fix(persistence): prefer inline folder notes over a stale map entry

Hydrate preferred a non-empty folderWorkspaceDiffComments entry over non-empty
inline notes. A rollback to a notes-capable #14112 build writes notes inline and
leaves the older map untouched, so re-upgrading deleted everything authored while
rolled back. Inline now wins when present; the map only fills a stripped record.

Co-authored-by: Orca <help@stably.ai>

src/main/persistence.test.ts

@@ -5611,15 +5611,36 @@ describe('Store', () => {
     expect(restored.getFolderWorkspace('fw-1')?.diffComments).toEqual([note])
   })
 
-  it('prefers a non-empty map entry and never lets an empty one delete inline notes', async () => {
-    const inline = makeFolderNote('note-inline', 'Inline note')
-    const mapped = makeFolderNote('note-mapped', 'Mapped note')
+  it('keeps notes authored inline on a rolled-back #14112 build over a staler map entry', async () => {
+    const mapped = makeFolderNote('note-mapped', 'Note from the fixed build')
+    const authored = makeFolderNote('note-inline', 'Note authored while rolled back')
 
     writeFolderWorkspaceProfile({
-      workspaces: [folderWorkspaceRecord({ diffComments: [inline] })],
+      workspaces: [folderWorkspaceRecord()],
       diffCommentsMap: { 'fw-1': [mapped] }
     })
-    expect((await createStore()).getFolderWorkspace('fw-1')?.diffComments).toEqual([mapped])
+    // #14112 persists notes inline and never learned about the top-level map, so a note authored
+    // there lands inline while the untouched map entry goes stale. Inline is the newer write.
+    const rolledBack = readDataFile() as PersistedState
+    writeDataFile({
+      ...rolledBack,
+      folderWorkspaces: rolledBack.folderWorkspaces.map((workspace) => ({
+        ...workspace,
+        diffComments: [authored]
+      }))
+    })
+
+    const store = await createStore()
+    expect(store.getFolderWorkspace('fw-1')?.diffComments).toEqual([authored])
+    store.flush()
+    expect((readDataFile() as PersistedState).folderWorkspaceDiffComments).toEqual({
+      'fw-1': [authored]
+    })
+  })
+
+  it('never lets an empty or unrelated map entry delete inline notes', async () => {
+    const inline = makeFolderNote('note-inline', 'Inline note')
+    const mapped = makeFolderNote('note-mapped', 'Mapped note')
 
     writeFolderWorkspaceProfile({
       workspaces: [folderWorkspaceRecord({ diffComments: [inline] })],

src/main/persistence.ts

@@ -2913,16 +2913,17 @@ export class Store {
     const stored = this.state.folderWorkspaceDiffComments
     let relocatedInline = false
     for (const workspace of this.state.folderWorkspaces ?? []) {
+      if (Array.isArray(workspace.diffComments) && workspace.diffComments.length > 0) {
+        // Inline wins: an intervening rollback to a #14112 build writes notes inline and leaves the
+        // older map untouched, so inline is the last notes-aware write. Also makes the relocation
+        // durable even if the user never edits anything this session.
+        relocatedInline = true
+        continue
+      }
       const comments = stored?.[workspace.id]
       // Not `??`: a degenerate `{ id: [] }` entry must not delete an intact inline value.
       if (Array.isArray(comments) && comments.length > 0) {
         workspace.diffComments = comments
-        continue
-      }
-      if (Array.isArray(workspace.diffComments) && workspace.diffComments.length > 0) {
-        // Legacy inline notes from an unreleased #14112 profile; make the relocation durable
-        // even if the user never edits anything this session.
-        relocatedInline = true
       }
     }
     if (relocatedInline) {