Close DV-01–04,07,09,13,14: unify operator-deck UX in server/web.

Standardize neon cyan on #00e8f5, wire SacredPageHeader across Builds/Path Tracer/LOTL, dedupe Pages.css, align Path Tracer chrome, drop dead wealth-deck CSS, add prefers-color-scheme shell + HelpTip, sidebar version from package.json build inject, and Vitest CSS regression guards.

server/web/src/help/routeEffects.test.ts

@@ -0,0 +1,17 @@
+import { describe, expect, it } from 'vitest';
+import { isDashboardRoute } from './routeEffects';
+
+describe('isDashboardRoute', () => {
+  it('matches Command Deck paths', () => {
+    expect(isDashboardRoute('/dashboard')).toBe(true);
+    expect(isDashboardRoute('/dashboard/')).toBe(true);
+    expect(isDashboardRoute('/')).toBe(true);
+  });
+
+  it('rejects other operator deck routes', () => {
+    expect(isDashboardRoute('/crucible')).toBe(false);
+    expect(isDashboardRoute('/forge')).toBe(false);
+    expect(isDashboardRoute('/settings')).toBe(false);
+    expect(isDashboardRoute('/pathtracer')).toBe(false);
+  });
+});