Add native local NAS and network service integrations

test/pi_hole/test.pi_hole.discovery.node.ts

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+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import { PiHoleConfigFlow, PiHoleHttpMatcher, PiHoleManualMatcher, PiHoleCandidateValidator } from '../../ts/integrations/pi_hole/index.js';
+
+tap.test('recognizes Pi-hole HTTP and manual discovery candidates', async () => {
+  const httpMatch = await new PiHoleHttpMatcher().matches({
+    url: 'http://192.168.1.2/admin/api.php?summaryRaw',
+    headers: { server: 'lighttpd' },
+  });
+  const manualMatch = await new PiHoleManualMatcher().matches({
+    host: 'pihole.local',
+    name: 'Pi-hole',
+  });
+  const validation = await new PiHoleCandidateValidator().validate(httpMatch.candidate!);
+
+  expect(httpMatch.matched).toBeTrue();
+  expect(httpMatch.candidate?.integrationDomain).toEqual('pi_hole');
+  expect(httpMatch.candidate?.metadata?.apiVersion).toEqual(5);
+  expect(httpMatch.candidate?.metadata?.location).toEqual('admin');
+  expect(manualMatch.matched).toBeTrue();
+  expect(manualMatch.candidate?.port).toEqual(80);
+  expect(validation.matched).toBeTrue();
+});
+
+tap.test('config flow parses Pi-hole URL and validates credentials shape', async () => {
+  const step = await new PiHoleConfigFlow().start({ source: 'manual', name: 'Pi-hole' }, {});
+  const missingKey = await step.submit!({ host: 'http://192.168.1.2:8080/admin/api.php' });
+  const done = await step.submit!({
+    host: 'http://192.168.1.2:8080/admin/api.php',
+    apiKey: 'secret',
+    apiVersion: '5',
+    verifySsl: false,
+  });
+
+  expect(missingKey.kind).toEqual('error');
+  expect(done.kind).toEqual('done');
+  expect(done.config?.host).toEqual('192.168.1.2');
+  expect(done.config?.port).toEqual(8080);
+  expect(done.config?.location).toEqual('admin');
+  expect(done.config?.apiVersion).toEqual(5);
+  expect(done.config?.apiKey).toEqual('secret');
+});
+
+export default tap.start();