feat: rebuild workspaces as the reference plugin

plugins/ai/src/backend/index.ts

@@ -1,11 +1,14 @@
 import type { PluginContext } from "@termix/plugin-sdk/backend";
 import { setPluginSsh } from "./ssh.js";
+import { setPluginServices } from "./services.js";
 import { startAiService, stopAiService } from "./routes.js";
 import { createCurrentAiRepository } from "../../../../src/backend/database/repositories/factory.js";
 
 export async function activate(ctx: PluginContext) {
   setPluginSsh(ctx.ssh);
   ctx.disposables.add(() => setPluginSsh(null));
+  setPluginServices(ctx.services);
+  ctx.disposables.add(() => setPluginServices(null));
   startAiService(ctx.http.router());
 
   // Offered by reference, not copied: this hands over a resolver, so the key

plugins/ai/src/backend/services.ts

@@ -0,0 +1,30 @@
+import type { PluginServices } from "@termix/plugin-sdk/backend";
+
+let current: PluginServices | null = null;
+
+/** Set in activate, cleared on deactivate. */
+export function setPluginServices(services: PluginServices | null): void {
+  current = services;
+}
+
+/** Another plugin's workspaces, as ctx.services.get("workspaces.saved") returns them. */
+interface SavedWorkspaces {
+  list: () => Promise<Array<{ id: number; name: string; isDefault: boolean }>>;
+}
+
+/**
+ * The user's saved workspaces, or null when the workspaces plugin is off or
+ * the user may not use it. Optional: the assistant works without it.
+ */
+export async function listSavedWorkspaces(
+  userId: string,
+): Promise<Array<{ id: number; name: string; isDefault: boolean }> | null> {
+  if (!current) return null;
+  try {
+    return await current
+      .get<SavedWorkspaces>("workspaces.saved", { userId })
+      .list();
+  } catch {
+    return null;
+  }
+}

plugins/ai/src/backend/tools/read-tools.ts

@@ -7,9 +7,9 @@ import {
   createCurrentHostRepository,
   createCurrentNetworkTopologyRepository,
   createCurrentSnippetRepository,
-  createCurrentWorkspaceRepository,
 } from "../../../../../src/backend/database/repositories/factory.js";
 import { num, objectSchema, type AiTool } from "./types.js";
+import { listSavedWorkspaces } from "../services.js";
 
 /**
  * Read tools project explicit fields rather than spreading rows. Redaction runs
@@ -178,16 +178,9 @@ export const readTools: AiTool[] = [
     category: "read",
     parameters: objectSchema({}),
     handler: async (_args, context) => {
-      const workspaces = await createCurrentWorkspaceRepository().listByUser(
-        context.userId,
-      );
-      return {
-        workspaces: workspaces.map((workspace: any) => ({
-          id: workspace.id,
-          name: workspace.name,
-          isDefault: workspace.isDefault ?? false,
-        })),
-      };
+      const workspaces = await listSavedWorkspaces(context.userId);
+      if (workspaces === null) return { workspaces: [], unavailable: true };
+      return { workspaces };
     },
   },
   {