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.

tests/README.md

@@ -29,6 +29,14 @@ One command runs everything:
 test.bat
 ```
 
+From repo root with GNU Make (same as `test.bat`):
+
+```make
+make test
+make test-quick   # -SkipE2E
+make test-fast    # -SkipE2E -SkipBuild
+```
+
 Or with PowerShell directly:
 
 ```powershell