fix: render registry workspaces for harness

backend/src/workspaces/runtime-renderer.ts

@@ -10,6 +10,16 @@ export interface RuntimePaths {
   indexes: string;
 }
 
+export interface RuntimeIdentity {
+  workspaceId: string;
+  workspaceRevision: string;
+}
+
+export interface RuntimeInstallationOverlay {
+  session_storage?: unknown;
+  profile?: unknown;
+}
+
 function seconds(timeoutMs: number | undefined): number | undefined {
   return timeoutMs === undefined ? undefined : Math.max(1, Math.ceil(timeoutMs / 1_000));
 }
@@ -73,6 +83,8 @@ export function renderRuntimeConfig(
   workspace: WorkspaceDescriptor,
   bindings: RuntimeBindings,
   paths: RuntimePaths,
+  identity?: RuntimeIdentity,
+  installation: RuntimeInstallationOverlay = {},
 ): string {
   const canonical = validateCanonicalWorkspace(workspace);
   if ([...bindings.dwh.missing, ...bindings.vector.missing, ...bindings.embedding.missing].length > 0) {
@@ -113,10 +125,20 @@ export function renderRuntimeConfig(
   if (embeddingTimeout !== undefined) embedding.timeout = embeddingTimeout;
 
   const rendered: Record<string, unknown> = {
+    ...(identity ? {
+      runtime_identity: {
+        workspace_id: identity.workspaceId,
+        workspace_revision: identity.workspaceRevision,
+      },
+    } : {}),
+    ...(installation.session_storage === undefined
+      ? {} : { session_storage: installation.session_storage }),
+    ...(installation.profile === undefined ? {} : { profile: installation.profile }),
     language: canonical.workspace.language,
     database,
     vector_db: vectorDb,
     embeddings: embedding,
+    roots: paths,
     paths,
   };
   if (dwhDirect) {