feat(mcp-cli): add stdio tool gittensory_get_burden_forecast (#4324)

Register gittensory_get_burden_forecast in the stdio bin, proxying the
public GET /v1/repos/:owner/:repo/intelligence route via apiGet and
surfacing the burdenForecast + burdenForecastFreshness slice. Mirrors the
sibling gittensory_get_label_audit tool. Adds a subprocess stdio test and
a fixture intelligence route. Bin + test only, no src changes.

Closes #2230

Co-authored-by: e11734937-beep <e11734937-beep@users.noreply.github.com>

Author: e11734937-beep

packages/gittensory-mcp/bin/gittensory-mcp.js

@@ -413,6 +413,11 @@ const STDIO_TOOL_DESCRIPTORS = [
     description:
       "Return the repo's label-policy audit (configured-vs-live labels, missing configured labels, suspicious status/source-style labels, and trusted-label-pipeline readiness) from the private Gittensory API.",
   },
+  {
+    name: "gittensory_get_burden_forecast",
+    description:
+      "Return the repo's cached maintainer burden forecast (projected review load, queue-growth risk, and stale-PR signals) with a freshness marker, from the private Gittensory API.",
+  },
   {
     name: "gittensory_preview_local_pr_score",
     description: "Inspect local diff metadata and request a private Gittensory scoring preview. No source contents are uploaded.",
@@ -689,6 +694,24 @@ server.registerTool(
   },
 );
 
+server.registerTool(
+  "gittensory_get_burden_forecast",
+  {
+    description: stdioToolDescription("gittensory_get_burden_forecast"),
+    inputSchema: ownerRepoShape,
+  },
+  async ({ owner, repo }) => {
+    const prefix = `/v1/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}`;
+    const intelligence = await apiGet(`${prefix}/intelligence`);
+    return toolResult("Gittensory burden forecast.", {
+      repoFullName: intelligence?.repoFullName ?? `${owner}/${repo}`,
+      generatedAt: intelligence?.generatedAt,
+      burdenForecast: intelligence?.burdenForecast ?? null,
+      burdenForecastFreshness: intelligence?.burdenForecastFreshness ?? null,
+    });
+  },
+);
+
 server.registerTool(
   "gittensory_preview_local_pr_score",
   {

test/unit/mcp-cli-burden-forecast.test.ts

@@ -0,0 +1,71 @@
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { closeFixtureServer, startFixtureServer } from "./support/mcp-cli-harness";
+
+const bin = join(process.cwd(), "packages/gittensory-mcp/bin/gittensory-mcp.js");
+const FORBIDDEN_PUBLIC_TERMS = /wallet\s*[:=]\s*\S+|hotkey\s*[:=]\s*\S+|coldkey\s*[:=]\s*\S+|raw trust score is|your trust score|reward estimate is|estimated reward/i;
+
+let client: Client;
+let transport: StdioClientTransport;
+let configDir: string;
+let apiUrl: string;
+let capturedRequests: Array<{ url: string; method: string }>;
+
+async function connect() {
+  configDir = mkdtempSync(join(tmpdir(), "gittensory-burden-forecast-"));
+  capturedRequests = [];
+  apiUrl = await startFixtureServer({
+    onApiRequest: (request) => {
+      if (request.url && request.url.includes("/intelligence")) {
+        capturedRequests.push({ url: request.url ?? "", method: request.method ?? "GET" });
+      }
+    },
+  });
+  transport = new StdioClientTransport({
+    command: "node",
+    args: [bin, "--stdio"],
+    env: {
+      ...process.env,
+      GITTENSORY_CONFIG_DIR: configDir,
+      GITTENSORY_API_URL: apiUrl,
+      GITTENSORY_TOKEN: "session-token",
+      GITTENSORY_API_TIMEOUT_MS: "5000",
+    },
+  });
+  client = new Client({ name: "burden-forecast-test", version: "0.0.1" });
+  await client.connect(transport);
+}
+
+async function disconnect() {
+  await client.close().catch(() => undefined);
+  await closeFixtureServer();
+  if (configDir) rmSync(configDir, { recursive: true, force: true });
+}
+
+describe("gittensory_get_burden_forecast stdio proxy", () => {
+  beforeEach(connect);
+  afterEach(disconnect);
+
+  it("registers the tool in the stdio server tool list", async () => {
+    const { tools } = await client.listTools();
+    expect(tools.map((t) => t.name)).toContain("gittensory_get_burden_forecast");
+  });
+
+  it("proxies owner/repo to /v1/repos/:owner/:repo/intelligence via apiGet and returns the burden forecast", async () => {
+    const result = await client.callTool({ name: "gittensory_get_burden_forecast", arguments: { owner: "owner", repo: "repo" } });
+    expect(capturedRequests.length).toBe(1);
+    const captured = capturedRequests[0]!;
+    expect(captured.url).toContain("/v1/repos/owner/repo/intelligence");
+    expect(captured.method).toBe("GET");
+    expect(result.isError).toBeFalsy();
+    const text = JSON.stringify(result);
+    expect(text).not.toMatch(FORBIDDEN_PUBLIC_TERMS);
+    expect(text).toContain("burdenForecast");
+    expect(text).toContain("queueGrowthRisk");
+    expect(text).toContain("owner/repo");
+  });
+});

test/unit/support/mcp-cli-harness.ts

@@ -374,6 +374,17 @@ export async function startFixtureServer(
             suspiciousLabels: ["visual"],
             trustedLabelPipelineReady: false,
           },
+          burdenForecast: {
+            projectedReviewLoad: "elevated",
+            queueGrowthRisk: "medium",
+            stalePrSignals: ["#101 idle 21d"],
+          },
+          burdenForecastFreshness: {
+            source: "cache",
+            generatedAt: "2026-05-30T00:00:00.000Z",
+            ageSeconds: 120,
+            freshness: "fresh",
+          },
         }),
       );
       return;