Feature/matrix migration

[Refraggerator]

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[Copilot]

Pull request overview

This PR ("Feature/matrix migration") makes two targeted changes to the CI/CD workflow to support the new Matrix E2EE integration via flutter_olm. The Matrix SDK requires libolm at runtime on Linux for Olm/Megolm encryption, and the expanded 34+ visual integration test suite requires more time to complete.

Changes:

• Adds libolm3 and libolm-dev to the apt-get dependencies in the integration test job, enabling the Matrix E2EE (flutter_olm) support to function during Linux CI runs.
• Increases the integration test timeout from 10 to 30 minutes to accommodate the expanded test suite (Groups 0–12 across visual_test.dart and voice_and_profile_test.dart).

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[Copilot]

On Ubuntu 24.04 (Noble Narwhal), which is what ubuntu-latest currently maps to in GitHub Actions, the libolm3 package was renamed to libolm3t64 as part of the 64-bit time_t transition. Attempting to install libolm3 by name may fail with "Package 'libolm3' has no installation candidate" or similar. Since libolm-dev declares a dependency on the correct transitional package, you may be able to install just libolm-dev (which will pull in libolm3t64 automatically). Alternatively, you can use libolm3 | libolm3t64 or conditionally install based on the distro version to ensure portability. A simpler fix is to install only libolm-dev and rely on the apt dependency resolver.

Suggested change

	libolm3 libolm-dev
	libolm-dev