feat(desktop): show skill issue when snapshotting is off (#16432)

packages/app/src/i18n/en.ts

@@ -512,6 +512,7 @@ export const dict = {
   "session.review.loadingChanges": "Loading changes...",
   "session.review.empty": "No changes in this session yet",
   "session.review.noVcs": "No Git Version Control System detected, changes not displayed",
+  "session.review.noSnapshot": "Snapshot tracking is disabled in config, so session changes are unavailable",
   "session.review.noChanges": "No changes",
 
   "session.files.selectToOpen": "Select a file to open",

packages/app/src/pages/session.tsx

@@ -495,8 +495,9 @@ export default function Page() {
   })
   const reviewEmptyKey = createMemo(() => {
     const project = sync.project
-    if (!project || project.vcs) return "session.review.empty"
-    return "session.review.noVcs"
+    if (project && !project.vcs) return "session.review.noVcs"
+    if (sync.data.config.snapshot === false) return "session.review.noSnapshot"
+    return "session.review.empty"
   })
 
   function upsert(next: Project) {

packages/app/src/pages/session/session-side-panel.tsx

@@ -60,6 +60,12 @@ export function SessionSidePanel(props: {
     return sync.data.session_diff[id] !== undefined
   })
 
+  const reviewEmptyKey = createMemo(() => {
+    if (sync.project && !sync.project.vcs) return "session.review.noVcs"
+    if (sync.data.config.snapshot === false) return "session.review.noSnapshot"
+    return "session.review.noChanges"
+  })
+
   const diffFiles = createMemo(() => diffs().map((d) => d.file))
   const kinds = createMemo(() => {
     const merge = (a: "add" | "del" | "mix" | undefined, b: "add" | "del" | "mix") => {
@@ -387,7 +393,7 @@ export function SessionSidePanel(props: {
                         />
                       </Show>
                     </Match>
-                    <Match when={true}>{empty(language.t("session.review.noChanges"))}</Match>
+                    <Match when={true}>{empty(language.t(reviewEmptyKey()))}</Match>
                   </Switch>
                 </Tabs.Content>
                 <Tabs.Content value="all" class="bg-background-stronger px-3 py-0">