Ship Ariadne cb9e8ea0 (EDNS OPT fix) + Theseus search picker in installer

Site manifest and download pages point at the rebuilt resolver:

  AriadneResolver-Setup-0.1.0.exe
  sha256 cb9e8ea0dcffaa60607ff1781e160199956dcf2d7dd69cd13986aba75fcf0fb1

Bumps release date to 2026-08-01. This build is the one that carries the
EDNS OPT-echo fix from the prior commit into what dl.silentmode.st
serves; users on the daemon should stop seeing "Server Not Found" for
normal ICANN names in Firefox / anything using getaddrinfo.

TheseusNavigator/package.json: adds engine-picker.html,
engine-picker-preload.js, popover.html, popover-preload.js to the
electron-builder `files` array. Because that list is explicit,
electron-builder shipped only what was listed, so in the packaged 0.0.1
build the WebContentsView created for the search-engine dropdown loaded
a nonexistent file and rendered blank -- visually identical to "the
button does nothing". `npm start` worked because dev reads from the
source tree. Fix restores the picker; needs a Theseus rebuild + redeploy
to reach users, then TheseusNavigator-Setup-0.0.1.exe's SHA-256 has to
be re-published here.

Ariadne hash still needs to be published on-chain to
releases.silentmode.bch (wallet spend, user's action).

package.json

@@ -32,6 +32,12 @@
       "home.html",
       "settings.html",
       "settings-preload.js",
+      "popover.html",
+      "popover-preload.js",
+      "engine-picker.html",
+      "engine-picker-preload.js",
+      "collision.html",
+      "collision-preload.js",
       "package.json",
       "node_modules/**/*",
       "!**/*.md",