Move Wiki errors and shutdown onto openvibe-sdk/service (#3)

ddiff --git a/package-lock.json b/package-lock.json
iindex 4645ed9..dbfb0c4 100644
---- a/package-lock.json
++++ b/package-lock.json
@@@ -16,7 +16,7 @@
          "iovalkey": "^0.4.0",
          "openvibe-contracts": "https://codeload.github.com/OpenVibers/OpenVibe.Contracts/tar.gz/refs/tags/v0.76.0",
          "openvibe-publishing": "https://codeload.github.com/OpenVibers/OpenVibe.Publishing/tar.gz/refs/tags/v1.0.0",
--        "openvibe-sdk": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.19.0",
++        "openvibe-sdk": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.26.0",
          "openvibe-shared": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v2.3.1",
          "pg": "^8.23.0"
        },
@@@ -1167,9 +1167,9 @@
        }
      },
      "node_modules/openvibe-sdk": {
--      "version": "0.19.0",
--      "resolved": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.19.0",
--      "integrity": "sha512-5hNT9KVxtkLeGNYirqY1+n939lga/8XPbmrtqISQTNKaXNsS1AHhf4TBwWe+ZAamuCHUADJZu5Ov3OyZLN0nIA==",
++      "version": "0.26.0",
++      "resolved": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.26.0",
++      "integrity": "sha512-+RK89ZG4WAKIRh89yr3ieIvnyJVNSOI+dsbBqGNcr9UHsJStdxtM75zSDq8cUNpBPQ1X6ElatZrjU9S3s0aEkg==",
        "license": "MIT",
        "engines": {
          "node": ">=20"
ddiff --git a/package.json b/package.json
iindex 41ba39d..8e0bff8 100644
---- a/package.json
++++ b/package.json
@@@ -27,7 +27,7 @@
      "iovalkey": "^0.4.0",
      "openvibe-contracts": "https://codeload.github.com/OpenVibers/OpenVibe.Contracts/tar.gz/refs/tags/v0.76.0",
      "openvibe-publishing": "https://codeload.github.com/OpenVibers/OpenVibe.Publishing/tar.gz/refs/tags/v1.0.0",
--    "openvibe-sdk": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.19.0",
++    "openvibe-sdk": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.26.0",
      "openvibe-shared": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v2.3.1",
      "pg": "^8.23.0"
    },
ddiff --git a/server/http/common.js b/server/http/common.js
iindex 4a1802c..b4902be 100644
---- a/server/http/common.js
++++ b/server/http/common.js
@@@ -3,7 +3,7 @@
   * Shared HTTP helpers: the actor middleware, capability guards, error mapping and citation input.
   */
  const contracts = require('openvibe-contracts');
--const cache = require('openvibe-shared/cache-policy');
++const svc = require('openvibe-sdk/service');
  const { checkCapability } = require('../auth/capabilities');
  const { AuthError } = require('../auth/viewer');
  
@@@ -36,25 +36,19 @@ function guard(capabilityId) {
      };
  }
  
--/** Service errors → problem+json. */
++/**
++ * Service errors → problem+json (openvibe-sdk/service, plan T1): the kit's defaults are this module's —
++ * the error's status/code/detail, `extra` spread into the body, 'internal.error'/'Internal error' at 500,
++ * 'request.invalid' otherwise, and only 5xx (apart from 503) logged, under `[Wiki]`. Kept as a named export
++ * so no call site moves.
++ */
  function sendError(res, req, err, log = console) {
--    const status = err && Number.isInteger(err.status) ? err.status : 500;
--    if (status >= 500 && status !== 503) log.error('[Wiki]', err && err.stack ? err.stack : err);
--    const code = (err && err.code) || (status === 500 ? 'internal.error' : 'request.invalid');
--    const detail = status === 500 ? 'Internal error' : (err && err.message) || undefined;
--    return http.sendProblem(res, status, code, { detail, ctx: req.ov, extra: err && err.extra ? err.extra : undefined });
++    return svc.sendError(res, req, err, log, { name: 'Wiki' });
  }
  
++/** A JSON handler: its return value is the body, answers `private, no-store` (as before), errors through sendError. */
  function run(fn, status = 200, log = console) {
--    return async (req, res) => {
--        try {
--            const out = await fn(req, res);
--            if (res.headersSent) return;
--            res.status(typeof status === 'function' ? status(out) : status).set('Cache-Control', cache.htmlHeaders({ private: true })).json(out);
--        } catch (err) {
--            sendError(res, req, err, log);
--        }
--    };
++    return svc.run(fn, status, { name: 'Wiki', log, noStore: true });
  }
  
  /**
ddiff --git a/server/index.js b/server/index.js
iindex 1211cab..342dc1b 100644
---- a/server/index.js
++++ b/server/index.js
@@@ -9,6 +9,7 @@
   * Events outbox relay, the Media attachment check) run only when asked (`workers: true`).
   */
  const { createIndexNow } = require('openvibe-shared/indexnow');
++const { gracefulStop } = require('openvibe-sdk/service');
  const { load } = require('./config');
  const { openDb, migrate, createStores } = require('./db');
  const { createPlatform } = require('./integrations/platform');
@@@ -17,7 +18,28 @@ const { createKeyStore } = require('./auth/keys');
  const { createViewerResolver } = require('./auth/viewer');
  const { createApp } = require('./app');
  
--async function start({ config, db: givenDb = null, now = () => Date.now(), fetchImpl = globalThis.fetch, tokens = null, publicKey = null, log = console, listen = true, workers = listen, rateLimits = true, limitsNow = null, indexnow: givenIndexNow = null } = {}) {
++/**
++ * The process stop (openvibe-sdk/service, plan T1): the job timers and the Events outbox relay stop taking new
++ * work, then the HTTP server drains (in-flight requests get 8 s), then the database and Valkey close — today's
++ * order. Past the 10 s deadline the process exits 0, as the hand-rolled timer did. `closeDb` is false when a
++ * test handed in its own database (start's `givenDb`), which stays open. `exit` and `signals` are injectable
++ * so a test can watch the stop and no test process installs signal handlers.
++ */
++function createLifecycle({ server, db, valkey = null, platform, timers = [], closeDb = true, exit, signals, log } = {}) {
++    return gracefulStop({
++        name: 'Wiki', server, log, drainMs: 8000, deadlineMs: 10000, deadlineExitCode: 0, exit, signals,
++        stop: [
++            () => timers.forEach(clearInterval),
++            () => platform.outbox.stop(),
++        ],
++        close: [
++            () => { if (closeDb) return db.close(); },
++            () => { if (valkey) return valkey.close(); },
++        ],
++    });
++}
++
++async function start({ config, db: givenDb = null, now = () => Date.now(), fetchImpl = globalThis.fetch, tokens = null, publicKey = null, log = console, listen = true, workers = listen, rateLimits = true, limitsNow = null, indexnow: givenIndexNow = null, signals = false, exit = () => {} } = {}) {
      config = config || load();
      // PostgreSQL (ADR-035): migrate on the owner's direct connection, then serve on the pooled runtime role.
      // Tests hand in a migrated database of their own (test/db-helper.js).
@@@ -68,29 +90,19 @@ async function start({ config, db: givenDb = null, now = () => Date.now(), fetch
          log.log(`[Wiki] ${config.nodeEnv} on http://${config.host}:${config.port} → ${config.baseUrl}`);
      }
  
++    const lifecycle = createLifecycle({ server, db, valkey, platform, timers, closeDb: !givenDb, signals, exit, log });
++
      async function stop() {
--        for (const t of timers) clearInterval(t);
--        await platform.outbox.stop();
--        if (server) await new Promise((resolve) => server.close(resolve));
--        if (!givenDb) await db.close();
--        if (valkey) await valkey.close().catch(() => {});
++        return lifecycle.stop('stop');
      }
--    return { app, db, svc, stores, platform, keys, viewers, server, config, indexnow, stop };
++    return { app, db, svc, stores, platform, keys, viewers, server, config, indexnow, timers, lifecycle, stop };
  }
  
--module.exports = { start };
++module.exports = { start, createLifecycle };
  
  if (require.main === module) {
      require('dotenv').config();
--    start().then((h) => {
--        const shutdown = (signal) => {
--            console.log(`[Wiki] ${signal} — closing`);
--            h.stop().finally(() => process.exit(0));
--            setTimeout(() => process.exit(0), 10000).unref();
--        };
--        process.on('SIGTERM', () => shutdown('SIGTERM'));
--        process.on('SIGINT', () => shutdown('SIGINT'));
--    }).catch((err) => {
++    start({ signals: true, exit: (code) => process.exit(code) }).catch((err) => {
          console.error('[Wiki] failed to start:', err);
          process.exit(1);
      });
ddiff --git a/test/service-kit.test.js b/test/service-kit.test.js
nnew file mode 100644
iindex 0000000..5827f97
---- /dev/null
++++ b/test/service-kit.test.js
@@@ -0,0 +1,101 @@
++'use strict';
++/**
++ * openvibe-sdk/service (plan T1): Wiki's error half is the kit's sendError/run with Wiki's options, so a
++ * refusal answers its own status/code/detail with `extra` spread into the body (never nested as `details`),
++ * a 503 keeps its detail, an unexpected throw answers 500 internal.error with 'Internal error', and a
++ * successful run answers `private, no-store`. The entry point's stop runs its stop and close steps in order
++ * (timers, outbox, then db and Valkey) and exits 0; a database a test handed in is left open.
++ */
++const assert = require('assert');
++const http = require('http');
++const express = require('express');
++const { sendError, run } = require('../server/http/common');
++const { createLifecycle } = require('../server/index');
++
++const quiet = { log() {}, warn() {}, error() {} };
++
++(async () => {
++    // A service-shaped app on Wiki's run/sendError, the way the API routers wire them.
++    const app = express();
++    app.get('/ok', run(async () => ({ ok: true }), 200, quiet));
++    app.post('/refuse', run(async () => { throw Object.assign(new Error('a title is required'), { status: 422, code: 'wiki.title_required', extra: { field: 'title' } }); }, 200, quiet));
++    app.post('/gone', run(async () => { throw Object.assign(new Error('Sources is not answering right now'), { status: 503, code: 'sources.unavailable' }); }, 200, quiet));
++    app.post('/boom', run(async () => { throw new Error('boom'); }, 200, quiet));
++    app.get('/direct', (req, res) => sendError(res, req, Object.assign(new Error('nope'), { status: 422, code: 'wiki.direct', extra: { n: 1 } }), quiet));
++    const server = await new Promise((resolve) => { const s = app.listen(0, '127.0.0.1', () => resolve(s)); });
++    const base = `http://127.0.0.1:${server.address().port}`;
++    const post = (p) => fetch(base + p, { method: 'POST', headers: { 'content-type': 'application/json' }, body: '{}' });
++    const read = async (r) => { const text = await r.text(); return { status: r.status, headers: r.headers, json: JSON.parse(text) }; };
++
++    const ok = await read(await fetch(`${base}/ok`));
++    assert.strictEqual(ok.status, 200, JSON.stringify(ok.json));
++    assert.deepStrictEqual(ok.json, { ok: true });
++    assert.strictEqual(ok.headers.get('cache-control'), 'private, no-store');
++    assert.match(String(ok.headers.get('vary')), /Cookie/, 'the private policy varies on Cookie/Authorization');
++
++    const refused = await read(await post('/refuse'));
++    assert.strictEqual(refused.status, 422, JSON.stringify(refused.json));
++    assert.strictEqual(refused.json.code, 'wiki.title_required');
++    assert.strictEqual(refused.json.detail, 'a title is required');
++    assert.deepStrictEqual(refused.json.field, 'title', 'extra is spread into the body');
++    assert.strictEqual(refused.json.details, undefined, 'extra is not nested as { details }');
++
++    const gone = await read(await post('/gone'));
++    assert.strictEqual(gone.status, 503, JSON.stringify(gone.json));
++    assert.strictEqual(gone.json.code, 'sources.unavailable');
++    assert.strictEqual(gone.json.detail, 'Sources is not answering right now');
++
++    const boom = await read(await post('/boom'));
++    assert.strictEqual(boom.status, 500, JSON.stringify(boom.json));
++    assert.strictEqual(boom.json.code, 'internal.error');
++    assert.strictEqual(boom.json.detail, 'Internal error');
++    assert.strictEqual(boom.json.error, 'Internal error');
++    assert.strictEqual(boom.json.error, boom.json.detail);
++
++    const direct = await read(await fetch(`${base}/direct`));
++    assert.strictEqual(direct.status, 422, JSON.stringify(direct.json));
++    assert.strictEqual(direct.json.code, 'wiki.direct');
++    assert.strictEqual(direct.json.n, 1, 'sendError spreads extra too');
++
++    server.close();
++
++    // The stop path: stop steps in order, then close steps, then exit 0.
++    const steps = [];
++    const stopServer = await new Promise((resolve) => { const s = http.createServer((_req, res) => res.end('ok')); s.listen(0, '127.0.0.1', () => resolve(s)); });
++    const timers = [setInterval(() => {}, 1000)];
++    const cleared = [];
++    const realClear = global.clearInterval;
++    global.clearInterval = (t) => { cleared.push(t); return realClear(t); };
++    const exits = [];
++    try {
++        const lifecycle = createLifecycle({
++            server: stopServer,
++            db: { close: async () => { steps.push('db.close'); } },
++            valkey: { close: async () => { steps.push('valkey.close'); } },
++            platform: { outbox: { stop: async () => { steps.push('outbox.stop'); } } },
++            timers, closeDb: true, exit: (code) => exits.push(code), signals: false, log: quiet,
++        });
++        assert.strictEqual(lifecycle.stopping(), false, 'not stopping before the signal');
++        const code = await lifecycle.stop('SIGTERM');
++        assert.strictEqual(lifecycle.stopping(), true, 'stopping after the signal');
++        assert.strictEqual(code, 0);
++        assert.deepStrictEqual(exits, [0], 'exits 0, not 1 (the deadlineExitCode is 0)');
++        assert.deepStrictEqual(steps, ['outbox.stop', 'db.close', 'valkey.close'], 'today\'s order');
++        assert.ok(cleared.includes(timers[0]), 'the job timer was cleared');
++        assert.strictEqual(stopServer.listening, false, 'the HTTP server stopped listening');
++    } finally {
++        global.clearInterval = realClear;
++    }
++
++    // A database handed in stays open (closeDb false) and an absent Valkey has no close step.
++    const steps2 = [];
++    const lifecycle2 = createLifecycle({
++        server: null, db: { close: async () => { steps2.push('db.close'); } }, valkey: null,
++        platform: { outbox: { stop: async () => { steps2.push('outbox.stop'); } } },
++        closeDb: false, exit: () => {}, signals: false, log: quiet,
++    });
++    assert.strictEqual(await lifecycle2.stop(), 0);
++    assert.deepStrictEqual(steps2, ['outbox.stop']);
++
++    console.log('service-kit ok');
++})().catch((err) => { console.error(err); process.exit(1); });