test(accounts): align stale free-tier expectations with current behavior

Commit 72ea1fc9 ("fix(accounts): simplify codex free tier badges") split
free codex accounts out of the `personal` audience into a distinct
`free` audience and dropped the `'Personal · '` prefix on inlineLabel,
but `account-visual-groups.test.ts` was not updated and has been
failing in CI ever since.

Update expectations to match the shipped behavior:
- `audience` for `-free` tokens is `'free'`, not `'personal'`
- `inlineLabel` for a bare free account is `'Free'`, not `'Personal · Free'`
- `compactDetailLabel` is `null` when no extra parts are present
- Sort order: business -> personal -> free -> unknown

Drive-by fix unrelated to the Opus 4.8 work in this PR but caught
because these tests started failing on every push to the branch.

Built [OnSteroids](https://onsteroids.ai)

ui/tests/unit/ui/lib/account-visual-groups.test.ts

@@ -29,17 +29,14 @@ describe('buildAccountVisualGroups', () => {
     ]);
 
     expect(groups).toHaveLength(1);
-    expect(groups[0]?.variants?.map((variant) => variant.audience)).toEqual([
-      'business',
-      'personal',
-    ]);
+    expect(groups[0]?.variants?.map((variant) => variant.audience)).toEqual(['business', 'free']);
     expect(groups[0]?.variants?.map((variant) => variant.inlineLabel)).toEqual([
       'Business · Workspace 04a0f049',
-      'Personal · Free',
+      'Free',
     ]);
     expect(groups[0]?.variants?.map((variant) => variant.compactDetailLabel)).toEqual([
       '04a0f049',
-      'Free',
+      null,
     ]);
     expect(groups[0]?.memberIds).toEqual([
       'kaidu.kd@gmail.com#04a0f049-team',
@@ -47,7 +44,7 @@ describe('buildAccountVisualGroups', () => {
     ]);
   });
 
-  it('keeps multiple personal codex plans distinct inside the same grouped card', () => {
+  it('keeps personal and free codex plans distinct inside the same grouped card', () => {
     const groups = buildAccountVisualGroups([
       makeAccount({
         id: 'kaidu.kd@gmail.com#plus',
@@ -61,8 +58,8 @@ describe('buildAccountVisualGroups', () => {
 
     expect(groups).toHaveLength(1);
     expect(groups[0]?.variants?.map((variant) => variant.inlineLabel)).toEqual([
-      'Personal · Free',
       'Personal · Plus',
+      'Free',
     ]);
   });
 });