release: v4.1.0 — assurance layer, TypeSafe, hardening + benchmark

Version bumped to 4.1.0 across the workspace, binaries, web console and Typst
template.

README: new "New in v4.1.0" summary; trimmed the verbose highlight bullets and
the TypeSafe section; removed the anti-plagiarism/provenance section (provenance
stays in the code, just not front-and-centre in the README); TypeSafe promoted
to its own top-level section; agent count 446.

TUTORIAL: new section 17 "Assurance & authorization" covering the target gate,
--scope-file, evidence-graded CVSS, audit anchoring + assurance bundle, sandbox,
intercept proxy, PoC re-validation, compliance mapping, TypeSafe, and the
internal/AD graph + budget governor.

benchmarks/typesafe-2026-09-20/: the with/without TypeSafe measurement —
report.html, scorer, both runs' findings/assurance/meta/logs, and a README.
No secrets committed (env-only during the runs, verified clean).

381 tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

neurosploit-rs/crates/harness/src/report.rs

@@ -242,7 +242,7 @@ pub fn html_with_pocs(target: &str, findings: &[Finding], meta: &EngagementMeta,
          <h2>Executive Summary</h2><div class=summary-grid>{summary_grid}</div>\
          {vuln_summary}\
          <h2>Findings ({n})</h2>{body}\
-         <p class=footer>Authorized testing only. Confirmed findings passed multi-model voting, receipt grounding and adversarial refute; \"needs-review\" are flagged for a human.<br>NeuroSploit v4.0.0 · by <b>Joas A Santos</b> &amp; <b>Red Team Leaders</b><br><span style=\"font-family:ui-monospace,monospace\">{provenance}</span></p></body></html>",
+         <p class=footer>Authorized testing only. Confirmed findings passed multi-model voting, receipt grounding and adversarial refute; \"needs-review\" are flagged for a human.<br>NeuroSploit v4.1.0 · by <b>Joas A Santos</b> &amp; <b>Red Team Leaders</b><br><span style=\"font-family:ui-monospace,monospace\">{provenance}</span></p></body></html>",
         t = esc(target), n = sorted.len(), body = body, summary_grid = summary_grid, vuln_summary = vuln_summary,
         // Which build produced this document. A report that circulates without
         // it is a report nobody can trace back to the run that made it.