fix: put Sessions back in the middle of nav on desktop and mobile

- Reorder desktop sidebar so Sessions sits between spaces/tools groups:
  Home, Projects, Workspaces, Sessions, Tool Workshop, Config Profiles, Settings.
- Reorder mobile bottom nav so Sessions is the center item:
  Home, Spaces, Sessions, Tools, Settings.
- Workspace cards already display the owning project name; no extra change needed.

Quality gates: npm run typecheck, npm run lint clean,
npm test -- --run 87 passed.

apps/web/src/pages/ProjectsPage.tsx

@@ -182,7 +182,9 @@ export const ProjectsPage = () => {
 									)}
 									<div className="mobile-list-item-chips">
 										{(project.repositories?.length ?? 0) === 0 ? (
-											<span className="mobile-list-item-chip muted">No repositories</span>
+											<span className="mobile-list-item-chip muted">
+												No repositories
+											</span>
 										) : (
 											project.repositories.map((repo) => (
 												<span key={repo.id} className="mobile-list-item-chip">