Drop western default apps from the CN default set

Basecamp, Discord, HEY, Google Contacts/Maps/Messages/Photos,
WhatsApp, and X lose their shipped launchers, webapp keybindings,
and the whatsapp-slim extension; aether, libreoffice-fresh, and
obs-studio leave the base package set. The HEY mailto handler and
its registration go with them. Preinstall add/remove lists, the
launcher hide list, and chromium flags stay in sync.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp

test/shell.d/chromium-whatsapp-slim-test.sh

@@ -1,32 +0,0 @@
-#!/bin/bash
-
-set -euo pipefail
-
-source "$(dirname "${BASH_SOURCE[0]}")/base-test.sh"
-
-require_command node
-
-# A keyless unpacked extension gets a path-derived id, so its settings — and
-# any shortcut registrations it may grow — would go stale if its load path or
-# packaging ever changed. The pinned key keeps the id stable everywhere.
-whatsapp_slim_id=$(node - <<'JS' "$ROOT/default/chromium/extensions/whatsapp-slim/manifest.json"
-const crypto = require('crypto')
-const fs = require('fs')
-
-const manifest = JSON.parse(fs.readFileSync(process.argv[2], 'utf8'))
-const hash = crypto.createHash('sha256').update(Buffer.from(manifest.key, 'base64')).digest()
-const alphabet = 'abcdefghijklmnop'
-let id = ''
-
-for (const byte of hash.subarray(0, 16)) {
-  id += alphabet[byte >> 4]
-  id += alphabet[byte & 0x0f]
-}
-
-process.stdout.write(id)
-JS
-)
-
-[[ $whatsapp_slim_id == "amhpgjbcfakkmkeojmoaoiochhifohdi" ]] ||
-  fail "whatsapp-slim extension manifest has the stable id" "$whatsapp_slim_id"
-pass "whatsapp-slim extension manifest has the stable id"

test/shell.d/whatsapp-slim-test.sh

@@ -1,30 +0,0 @@
-#!/bin/bash
-
-source "$(dirname "${BASH_SOURCE[0]}")/base-test.sh"
-
-require_command jq
-require_command node
-
-EXT_DIR="$ROOT/default/chromium/extensions/whatsapp-slim"
-
-jq -e '
-  .content_scripts[0].js == ["system-theme.js"] and
-  .content_scripts[0].run_at == "document_start"
-' "$EXT_DIR/manifest.json" >/dev/null || fail "WhatsApp enables system theming before startup"
-
-mode=$(node - "$EXT_DIR/system-theme.js" <<'JS'
-const fs = require("fs")
-const values = new Map()
-let reloaded = false
-global.localStorage = {
-  getItem: key => values.get(key),
-  setItem: (key, value) => values.set(key, value),
-}
-global.location = { reload: () => { reloaded = true } }
-eval(fs.readFileSync(process.argv[2], "utf8"))
-process.stdout.write(`${values.get("system-theme-mode")}:${reloaded}`)
-JS
-)
-
-[[ $mode == "true:true" ]] || fail "WhatsApp selects its system theme mode" "$mode"
-pass "WhatsApp follows the system theme through its existing slim extension"