feat(evidence): add Qdrant BM25 vector in place

backend/src/tht/tht-runner.ts

@@ -20,7 +20,7 @@ import {
   validateOperationalWorkspace,
   type WorkspaceDescriptor,
 } from "../workspaces/schema.js";
-import { reconcileCollection } from "../workspaces/qdrant-collection.js";
+import { reconcileCollection, type CollectionMode } from "../workspaces/qdrant-collection.js";
 import type { WorkspaceSecretStore } from "../workspaces/secret-store.js";
 
 export interface ThtConfig extends SecretBundleConfig {
@@ -575,7 +575,7 @@ export class ThtRunner {
   async qdrantEnsure(
     workspace: WorkspaceDescriptor,
     timeoutSec: number,
-    mode: "self_heal" | "require_existing" = "require_existing",
+    mode: CollectionMode = "require_existing",
   ): Promise<QdrantEnsureResult> {
     let descriptor;
     try {