feat(rename): complete searchSpace to workspace transition across frontend and backend

- Introduced a comprehensive specification for renaming `searchSpace` to `workspace` in `surfsense_web` and `surfsense_desktop`, ensuring all TypeScript identifiers, React props, and local data structures are updated.
- Implemented migration shims for persisted local state to prevent data loss during the transition.
- Updated observability metrics and IPC channels to reflect the new naming convention.
- Removed legacy `active-search-space` module and replaced it with `active-workspace` to maintain consistency.
- Ensured no behavioral changes or data loss for users during the renaming process.

surfsense_web/features/artifacts-library/ui/artifact-card.tsx

@@ -6,11 +6,11 @@ import { KIND_META } from "./kind-meta";
 
 export function ArtifactCard({
 	artifact,
-	searchSpaceId,
+	workspaceId,
 	onOpen,
 }: {
 	artifact: LibraryArtifact;
-	searchSpaceId: number;
+	workspaceId: number;
 	onOpen: (artifact: LibraryArtifact) => void;
 }) {
 	const meta = KIND_META[artifact.kind];
@@ -50,7 +50,7 @@ export function ArtifactCard({
 
 			{artifact.sourceThreadId ? (
 				<Link
-					href={`/dashboard/${searchSpaceId}/new-chat/${artifact.sourceThreadId}`}
+					href={`/dashboard/${workspaceId}/new-chat/${artifact.sourceThreadId}`}
 					title="Open source chat"
 					className="relative z-10 flex size-7 shrink-0 items-center justify-center rounded-md text-muted-foreground opacity-0 transition-opacity hover:bg-muted hover:text-foreground focus-visible:opacity-100 group-hover:opacity-100"
 				>

surfsense_web/features/artifacts-library/ui/artifacts-library.tsx

@@ -33,7 +33,7 @@ function ErrorState({ onRetry }: { onRetry: () => void }) {
 			<div>
 				<p className="font-medium text-foreground">Couldn't load artifacts</p>
 				<p className="mt-1 text-sm text-muted-foreground">
-					Something went wrong fetching this search space's deliverables.
+					Something went wrong fetching this workspace's deliverables.
 				</p>
 			</div>
 			<Button variant="outline" size="sm" onClick={onRetry}>
@@ -53,8 +53,7 @@ function EmptyState() {
 }
 
 export function ArtifactsLibrary({ workspaceId }: { workspaceId: number }) {
-	const searchSpaceId = workspaceId;
-	const { artifacts, loading, error, refresh } = useLibraryArtifacts(searchSpaceId);
+	const { artifacts, loading, error, refresh } = useLibraryArtifacts(workspaceId);
 	const openReportPanel = useSetAtom(openReportPanelAtom);
 	const [selectedMedia, setSelectedMedia] = useState<LibraryArtifact | null>(null);
 
@@ -114,7 +113,7 @@ export function ArtifactsLibrary({ workspaceId }: { workspaceId: number }) {
 										<ArtifactCard
 											key={artifact.key}
 											artifact={artifact}
-											searchSpaceId={searchSpaceId}
+											workspaceId={workspaceId}
 											onOpen={handleOpen}
 										/>
 									))}