fix(spec): re-point the app liveness ledger off objectui's removed AppSidebar; branding.logo is planned

.changeset/20146-app-ledger-repoint.md

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+"@objectstack/spec": patch
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+`liveness/app.json`: every `AppSchema` row that cited objectui's `AppSidebar.tsx` as read evidence now cites the reader that is actually mounted, and `branding.logo` is `planned` instead of riding on its container's `live`. Ledger evidence and comment prose only. ⛔ No schema, parse or accept-set change.
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+The ledgers ship inside this package (`files[]` includes `liveness`), and `@objectstack/lint` reads them to decide which authored keys draw an advisory warning, so the rows an upgrading reader or tool consults are these.
+
+- **Twelve rows re-pointed, and the file `_note`.** `label`, `description`, `icon`, `branding`, `active`, `hidden`, `navigation[].id`, `navigation[].visible`, `areas[].id`, `areas[].label`, `areas[].icon` and `areas[].navigation` cited `AppSidebar`. That component was deprecated, never mounted (the console renders `UnifiedSidebar`), and objectui has since removed it, so it was never evidence of a live reader. Each row now names its mounted reader, file and symbol: `AppSwitcher`, `UnifiedSidebar`, `AppHeader`, `ConsoleLayout` into `AppShell`'s `useAppShellBranding`, `HomeAppsStrip`, `filterActiveApps`, `NavigationRenderer`, `NavMenuRenderer` and `AppManagementPage`. All are read at the `.objectui-sha` pin f8a9d0fb, and each reads its key unchanged at objectui main fb91ac9b0.
+- **`branding.logo` is `planned`.** Plugin-designer's app wizard and branding editor write it, and nothing mounted renders it: the console's branding handoff passes `primaryColor`, `accentColor` and `favicon` and never `logo`. The row names the objectui card that will render it (objectui#10827). It is not `authorWarn`'d: a logo URL is display metadata, and an author who sets it now loses nothing, because the value takes effect when that renderer lands. The `branding` row is drilled so `primaryColor`, `accentColor` and `favicon` keep their own `live` verdicts. Its entry in `undrilled-containers.baseline.json` goes away with the drill, and `state-counts.md` is regenerated (`app`: 56 → 59 classified, one `planned`).
+- **`description` is still `live`, but narrower.** Its one mounted reader is the admin app list at `/system/apps`, which shows each app's description and searches it. The sidebar presentation this row used to describe has no successor.
+- **Two corrections found while re-reading.** The `active` row's note said the sidebar's active-app lookup spans all apps. It skips `active: false` apps, and what keeps an inactive app routable by direct URL is the console's route resolver, which matches against every app. The two `AppSidebar` mentions in `ui/app.zod.ts` (the `recordId` template-variable note and the `AREA_ORDER_RETIRED` note) now name `NavigationRenderer` / `UnifiedSidebar`.