Size budgets for the home page (WS-T task 1): openvibe-shared/perf-budget (shared 1.15.0) measures / as the server answers it on a fresh database, no browser, in npm test; budgets a little above the 2026-09-26 measurement

ddiff --git a/package-lock.json b/package-lock.json
iindex 940f9b4..5a2a288 100644
---- a/package-lock.json
++++ b/package-lock.json
@@@ -19,7 +19,7 @@
          "multer": "^2.4.0",
          "openvibe-contracts": "https://codeload.github.com/OpenVibers/OpenVibe.Contracts/tar.gz/refs/tags/v0.49.0",
          "openvibe-sdk": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.11.0",
--        "openvibe-shared": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v1.13.0"
++        "openvibe-shared": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v1.15.0"
        },
        "engines": {
          "node": ">=20.0.0"
@@@ -1082,9 +1082,9 @@
        }
      },
      "node_modules/openvibe-shared": {
--      "version": "1.13.0",
--      "resolved": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v1.13.0",
--      "integrity": "sha512-aodJtwID5ZVMc8usa0hxf2YZoG8AivhI65mrk0sv6i3EHYCV9vTJCtaALpxvgsZnTzYtSg08CtzQh8GfXmcmtg==",
++      "version": "1.15.0",
++      "resolved": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v1.15.0",
++      "integrity": "sha512-mpv4t+LN9IlqlwtugZmEZmWxo2JB+RVrvRZLXkwBghv7aTik91sjTmPNfkVi9ahARAjrIX51Hg/LZnkabVnH0A==",
        "license": "MIT",
        "dependencies": {
          "jsonwebtoken": "^9.0.0"
ddiff --git a/package.json b/package.json
iindex 34fbd76..53c9cd0 100644
---- a/package.json
++++ b/package.json
@@@ -28,7 +28,7 @@
      "multer": "^2.4.0",
      "openvibe-contracts": "https://codeload.github.com/OpenVibers/OpenVibe.Contracts/tar.gz/refs/tags/v0.49.0",
      "openvibe-sdk": "https://codeload.github.com/OpenVibers/OpenVibe.SDK/tar.gz/refs/tags/v0.11.0",
--    "openvibe-shared": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v1.13.0"
++    "openvibe-shared": "https://codeload.github.com/OpenVibers/OpenVibe.Shared/tar.gz/refs/tags/v1.15.0"
    },
    "engines": {
      "node": ">=20.0.0"
ddiff --git a/test/perf-budget.test.js b/test/perf-budget.test.js
nnew file mode 100644
iindex 0000000..b1c30e7
---- /dev/null
++++ b/test/perf-budget.test.js
@@@ -0,0 +1,55 @@
++'use strict';
++// Size budgets for openvibe.community's home page (roadmap WS-T task 1, openvibe-shared/perf-budget): the server as
++// it runs (a fresh database), measured without a browser. Budgets sit a little above the 2026-09-26
++// measurement; raising one is a decision to state in the commit.
++//   node test/perf-budget.test.js
++const assert = require('assert');
++const fs = require('fs');
++const os = require('os');
++const net = require('net');
++const path = require('path');
++const { spawn } = require('child_process');
++const { measure, check, format } = require('openvibe-shared/perf-budget');
++
++const BUDGETS = {
++    htmlRawKB: 26,   // measured 20.2 (fresh database)
++    htmlBrotliKB: 6.5,   // 5.1
++    jsFiles: 5,   // 4
++    jsRawKB: 240,   // 208.8
++    jsBrotliKB: 56,   // 48.9
++    cssFiles: 3,   // 2
++    cssRawKB: 31,   // 26.2
++    cssBrotliKB: 6.5,   // 5.2
++    externalFiles: 2,   // 1
++};
++
++const freePort = () => new Promise((resolve) => { const s = net.createServer(); s.listen(0, '127.0.0.1', () => { const { port } = s.address(); s.close(() => resolve(port)); }); });
++
++(async () => {
++    const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'ov-budget-'));
++    const port = await freePort();
++    const child = spawn(process.execPath, [path.join(__dirname, '..', 'server', 'index.js')], {
++        cwd: path.join(__dirname, '..'),
++        env: { ...process.env, PORT: String(port), HOST: '127.0.0.1', NODE_ENV: 'test', COMMUNITY_DB_PATH: path.join(dir, 'community.db') },
++        stdio: ['ignore', 'ignore', 'pipe'],
++    });
++    let stderr = '';
++    child.stderr.on('data', (d) => { stderr = (stderr + d).slice(-2000); });
++    const base = `http://127.0.0.1:${port}`;
++    try {
++        let up = false;
++        for (let i = 0; i < 150 && !up; i++) {
++            up = await fetch(`${base}/api/health`).then((r) => r.ok).catch(() => false);
++            if (!up) await new Promise((r) => setTimeout(r, 100));
++        }
++        assert.ok(up, `the server did not start:\n${stderr}`);
++        const m = await measure({ base });
++        const over = check(m, BUDGETS);
++        assert.deepStrictEqual(over, [], format(m, over));
++        console.log(format(m));
++        console.log('perf budget: all checks passed');
++    } finally {
++        child.kill();
++        fs.rmSync(dir, { recursive: true, force: true });
++    }
++})().catch((err) => { console.error(err); process.exitCode = 1; });