refactor(features): inline workspace/inbox wrappers, drop dead helper

WorkspacePage and InboxPage were pass-through wrappers around
WorkspaceRevampPage and QueueCommandCenterPage respectively — artifacts
of the now-completed revamp migration. Collapses the indirection.

Workspace:
- Renames WorkspaceRevampPage.tsx/.css to WorkspacePage.tsx/.css,
  overwriting the former wrapper
- Renames the exported component, prop interface, className tokens
  (workspace-revamp* -> workspace-page*) and data-testid accordingly
- Prunes dead CSS selectors that targeted the "standard" rail branch
  removed in the prior flag cleanup: .workspace-revamp__rail,
  .workspace-revamp__playbook, the --solo modifier, and the responsive
  rail-reorder rule. Simplifies the grid to single-column
- Deletes WorkspacePage.test.tsx — it only exercised the wrapper
  pass-through; WorkspacePage behavior is covered by
  renderActiveTab.test and the DraftTab suite
- Updates features/workspace/index.ts to a single export
- Updates the stale WorkspaceRevampPage reference in the
  WorkspaceQueueContext.css header comment

Inbox:
- Replaces the 23-line InboxPage wrapper with a single re-export:
  export { QueueCommandCenterPage as InboxPage } from "../revamp"
- Deletes InboxPage.test.tsx — behavior is covered by the existing
  QueueCommandCenterPage test suite

Flags:
- Removes the unused getEnabledRevampFlags export from flags.ts. It
  had no consumers anywhere in src/ and was a leftover from the earlier
  preview-mode messaging system

Net: 174 removed / 25 added across 10 files. No behavioral change;
renders and routes are identical.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: saagar210

src/features/inbox/InboxPage.test.tsx

@@ -1,23 +1 @@
-import type { SavedDraft } from "../../types/workspace";
-import type { QueueView } from "./queueModel";
-import { QueueCommandCenterPage } from "../revamp";
-
-interface InboxPageProps {
-  onLoadDraft: (draft: SavedDraft) => void;
-  initialQueueView?: QueueView | null;
-  onQueueViewConsumed?: () => void;
-}
-
-export function InboxPage({
-  onLoadDraft,
-  initialQueueView = null,
-  onQueueViewConsumed,
-}: InboxPageProps) {
-  return (
-    <QueueCommandCenterPage
-      onLoadDraft={onLoadDraft}
-      initialQueueView={initialQueueView}
-      onQueueViewConsumed={onQueueViewConsumed}
-    />
-  );
-}
+export { QueueCommandCenterPage as InboxPage } from "../revamp";

src/features/inbox/InboxPage.tsx

@@ -204,17 +204,3 @@ export function resolveRevampFlags({
     },
   );
 }
-
-export function getEnabledRevampFlags(flags: RevampFlags): RevampFlagId[] {
-  // "Revamp enabled" is used for preview-mode messaging. Keep this narrowly scoped
-  // to actual revamp / routing toggles, not general feature policy flags.
-  const revampScoped: RevampFlagId[] = (
-    Object.keys(flags) as RevampFlagId[]
-  ).filter((flagId) => {
-    return (
-      flagId.startsWith("ASSISTSUPPORT_REVAMP_") ||
-      flagId === "ASSISTSUPPORT_LLM_ROUTER_V2"
-    );
-  });
-  return revampScoped.filter((flagId) => flags[flagId]);
-}

src/features/revamp/flags.ts

@@ -0,0 +1,10 @@
+.workspace-page {
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: var(--space-4, 16px);
+  height: 100%;
+}
+
+.workspace-page__main {
+  min-width: 0;
+}

src/features/workspace/WorkspacePage.css

@@ -1,6 +1,7 @@
 import { forwardRef } from "react";
-import { type DraftTabHandle } from "../../components/Draft/DraftTab";
-import { WorkspaceRevampPage } from "./WorkspaceRevampPage";
+import { DraftTab, type DraftTabHandle } from "../../components/Draft/DraftTab";
+import "./WorkspacePage.css";
+import "../../styles/revamp/index.css";
 
 interface WorkspacePageProps {
   onNavigateToSource: (searchQuery: string) => void;
@@ -9,7 +10,15 @@ interface WorkspacePageProps {
 export const WorkspacePage = forwardRef<DraftTabHandle, WorkspacePageProps>(
   function WorkspacePage({ onNavigateToSource }, ref) {
     return (
-      <WorkspaceRevampPage ref={ref} onNavigateToSource={onNavigateToSource} />
+      <div className="workspace-page" data-testid="workspace-page">
+        <section className="workspace-page__main">
+          <DraftTab
+            ref={ref}
+            onNavigateToSource={onNavigateToSource}
+            revampModeEnabled
+          />
+        </section>
+      </div>
     );
   },
 );

src/features/workspace/WorkspacePage.test.tsx

@@ -1,7 +1,7 @@
 /* ============================================================================
    Workspace Queue Context
 
-   Shared between WorkspaceRevampPage and RevampShell rail.
+   Rendered from the RevampShell rail.
    Keep styling based on revamp tokens so it stays consistent across shells.
    ============================================================================ */
 

src/features/workspace/WorkspacePage.tsx

@@ -1,2 +1 @@
-export { WorkspacePage } from './WorkspacePage';
-export { WorkspaceRevampPage } from './WorkspaceRevampPage';
+export { WorkspacePage } from "./WorkspacePage";