S-UI v1.5.4-beta3

Prerelease refinement for the Nexus Overview dashboard.

Changed

Re-graded Nexus dark surfaces to a deeper navy palette with teal and
violet accents while keeping classic themes unchanged.
Removed the standalone Traffic overview panel and the duplicate Health
KPI.
Kept Live traffic in the KPI row and moved its spark to a compact live
status sample window.
Reflowed the Overview into a denser three-column primary row and
compacted Top clients, Recent events and Protocol summaries.
Preserved the frontend-only boundary: no backend/API/CSRF/CSP changes
and no runtime or development dependency changes.

cd frontend && npm run test - PASS
cd frontend && npm run lint - PASS
cd frontend && npm run build - PASS
go test ./middleware/... -run TestAdminSecurityHeaders - PASS
External-origin primary gate over Nexus source - PASS, zero matches
Built dist/index.html inline-script/event-handler shape gate - PASS
Supply-chain gate, package dependency blocks unchanged - PASS
Nexus viewport checks for dark LTR en and RTL fa at 1440x900,
1180x800, 834x1112 and 390x844 - PASS

bash <(curl -Ls https://raw.githubusercontent.com/deposist/s-ui-x/main/install.sh) v1.5.4-beta3

Prerelease refinement для Nexus Overview dashboard.

Dark surfaces Nexus переведены на более глубокую navy palette с
teal/violet accents, classic themes не изменялись.
Удалены дублирующие Traffic overview panel и Health KPI.
Live traffic остался в KPI row, а spark теперь использует компактное
окно live status samples.
Top clients, Recent events и Protocol summaries уплотнены, а primary
row на desktop стал трёхколоночным.
Граница frontend-only сохранена: без backend/API/CSRF/CSP и
dependency drift.