fix(reader): preserve touch text selection in PDF reader

Route touch selection through EmbedPDF pointer mode while keeping swipe pagination limited to pan mode. Keep NestJS testing aligned with the application major and prevent incompatible standalone major updates.

Fixes #1388

.github/dependabot.yml

@@ -18,6 +18,9 @@ updates:
       # archiver v8 is ESM-only with a completely different API; pin to v7 until we migrate
       - dependency-name: "archiver"
         update-types: ["version-update:semver-major"]
+      # @nestjs/testing must stay on the same major as @nestjs/common and @nestjs/core
+      - dependency-name: "@nestjs/testing"
+        update-types: ["version-update:semver-major"]
     groups:
       production-dependencies:
         dependency-type: "production"