fix: render registry workspaces for harness

backend/src/app.ts

@@ -55,6 +55,7 @@ export function buildApp(config: AppConfig, deps?: BuildAppDeps): FastifyInstanc
     configPath: process.env.THT_CONFIG ?? "config/tht.yaml",
     dataRoot: config.dataRoot,
     runtimeSnapshotRoot: join(config.workspaceRegistry.root, "snapshots", "runtime"),
+    secretRoots: config.workspaceRegistry.secretRoots,
     secretsFile: config.secretsFile,
     secretFiles: config.secretFiles,
   });
@@ -141,7 +142,7 @@ export function buildApp(config: AppConfig, deps?: BuildAppDeps): FastifyInstanc
   app.get("/internal/maintenance/status", async (req, reply) => {
     return maintenanceBarrier.status();
   });
-  sqlRoutes(app, { tht: tht as ThtRunner, getSettings });
+  sqlRoutes(app, { tht: tht as ThtRunner, getSettings, workspaceRegistry });
   metaRoutes(app, { harnessDir: config.harnessDir, listModels });
   workspaceRoutes(app, { registry: workspaceRegistry, config: config.workspaceRegistry, diagnose: workspaceDiagnoser });
   settingsRoutes(app, { cfg: config, listModels, getSettings });