Give each view its own page, and add a CNAME from an A record

Views open a page like a zone's, with Settings, Options and Zones tabs
(and New zone in that view); the Views page lists and orders them. A
and AAAA records get a + CNAME button that fills in the add form.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/web/static/assets/app.js

@@ -24,6 +24,7 @@ const routes = [
   { pattern: /^zones$/, page: zones, nav: "zones" },
   { pattern: /^zones\/(\d+)(?:\/(\w+))?$/, page: zone, nav: "zones", params: ["id", "tab"] },
   { pattern: /^views$/, page: views, nav: "views" },
+  { pattern: /^views\/(\d+)(?:\/(\w+))?$/, page: views, nav: "views", params: ["id", "tab"] },
   { pattern: /^acls$/, page: acls, nav: "acls" },
   { pattern: /^keys$/, page: keys, nav: "keys" },
   { pattern: /^options$/, page: options, nav: "options" },