Add reviewer host evidence and verification shims

runners/agent-runner/test/host-evidence.test.ts

@@ -0,0 +1,69 @@
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+
+import { describe, expect, it } from 'vitest';
+
+import {
+  formatHostEvidenceResponse,
+  normalizeHostEvidenceTailLines,
+  resolveHostEvidenceResponsesDir,
+  waitForHostEvidenceResponse,
+} from '../src/host-evidence.js';
+
+describe('runner host evidence helpers', () => {
+  it('normalizes log tail lines for the MCP request', () => {
+    expect(normalizeHostEvidenceTailLines(undefined)).toBe(20);
+    expect(normalizeHostEvidenceTailLines(0)).toBe(1);
+    expect(normalizeHostEvidenceTailLines(999)).toBe(200);
+    expect(normalizeHostEvidenceTailLines(25)).toBe(25);
+  });
+
+  it('reads and removes the host evidence response file', async () => {
+    const ipcDir = fs.mkdtempSync(path.join(os.tmpdir(), 'ejclaw-host-ipc-'));
+    const responseDir = resolveHostEvidenceResponsesDir(ipcDir);
+    fs.mkdirSync(responseDir, { recursive: true });
+
+    const responsePath = path.join(responseDir, 'req-1.json');
+    fs.writeFileSync(
+      responsePath,
+      JSON.stringify({
+        requestId: 'req-1',
+        ok: true,
+        action: 'ejclaw_service_status',
+        command: 'systemctl --user show ejclaw',
+        stdout: 'ActiveState=active\n',
+        stderr: '',
+        exitCode: 0,
+      }),
+    );
+
+    const response = await waitForHostEvidenceResponse(responseDir, 'req-1', {
+      timeoutMs: 100,
+      pollMs: 10,
+    });
+
+    expect(response.ok).toBe(true);
+    expect(response.stdout).toContain('ActiveState=active');
+    expect(fs.existsSync(responsePath)).toBe(false);
+  });
+
+  it('formats the response into a compact MCP-friendly text block', () => {
+    const text = formatHostEvidenceResponse({
+      requestId: 'req-2',
+      ok: false,
+      action: 'ejclaw_service_logs',
+      command: 'journalctl --user -u ejclaw --no-pager -n 10',
+      stdout: 'line 1\nline 2\n',
+      stderr: 'No journal files were found.\n',
+      exitCode: 1,
+      error: 'command failed',
+    });
+
+    expect(text).toContain('Host evidence action: ejclaw_service_logs');
+    expect(text).toContain('Exit code: 1');
+    expect(text).toContain('$ journalctl --user -u ejclaw --no-pager -n 10');
+    expect(text).toContain('[stderr]');
+    expect(text).toContain('[error] command failed');
+  });
+});