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>

web/public/style.css

@@ -1,4 +1,4 @@
-/* NeuroSploit v4.0.0 — web console.
+/* NeuroSploit v4.1.0 — web console.
    Visual direction: dense security-operations console (not a marketing SaaS
    page). Borders over shadows, typography over color, two radii, one accent.
 */