Optimize login background image: resize to 1920x1080 and convert to WebP

[Copilot]

The login page background image was oversized (2268x1887, 4.4MB) and in an unoptimized format. This PR resizes it to 1920x1080 and converts to WebP, reducing file size by 97.6% (4.4MB → 107KB).

Changes

• Image optimization: Resized background.png to 1920x1080 and converted to background.webp (107KB)
• Import update: Updated LoginPage.scala to reference new WebP image:

  @js.native @JSImport("/images/background.webp", JSImport.Default)
  val backgroundImage: String = js.native

• Version bump: Incremented project version from 2.3.1 → 2.3.2 in build.sbt and docker-compose.yml
• Cleanup: Removed obsolete background.png

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https /usr/lib/apt/methods/https (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

There is background.png image in the client/images.

1. Resize it properly to fit modern browsers.
2. Convert to webp.
3. Update usage of this image.
4. Increment project version to new minor.

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[Copilot]

Pull request overview

This PR optimizes the login page background image by converting it from PNG to WebP format, achieving a 97.6% file size reduction (4.4MB → 107KB). The changes include replacing the image file, updating the import reference in the Scala code, and incrementing the project version to reflect this minor update.

Key Changes:

• Image optimization: Converted background.png (2268x1887) to background.webp (1920x1080)
• Updated import path in LoginPage.scala to reference the new WebP file
• Version bump from 2.3.1 to 2.3.2 in build.sbt and docker-compose.yml

Reviewed changes

Copilot reviewed 2 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
client/images/background.webp	New optimized WebP image at 1920x1080 resolution (107KB)
client/images/background.png	Removed original oversized PNG image (4.4MB)
client/src/main/scala/client/LoginPage.scala	Updated JSImport path from /images/background.png to /images/background.webp
build.sbt	Incremented project version from 2.3.1 to 2.3.2
scripts/local-docker/docker-compose.yml	Updated Docker image tag from 2.3.1 to 2.3.2
client/package-lock.json	Removed peer: true flag from a dependency entry

Files not reviewed (1)

• client/package-lock.json: Language not supported

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