McPringle/komunumo

AI Summary: This issue proposes refactoring Komunumo's custom CSS file setting by moving it from the `KOMUNUMO_INSTANCE_STYLES` environment variable to the `config` database table. The goal is to centralize instance configuration, allow dynamic updates without application restarts, and enable pre-configuration via the `DemoDataImporter`'s JSON format.

AI Summary: This issue proposes refactoring how the 'hide communities' setting is managed. Currently controlled by an environment variable, it should be moved to the `config` database table for better consistency, easier adjustments without application restarts, and automated configuration via demo data imports. The task involves adding a new entry to the `config` table and updating the application code to read this setting from the database instead of the environment variable.

AI Summary: Investigate and resolve the warnings related to unknown keywords ('meta:enum' and 'deprecated') during the Software Bill of Materials (SBOM) generation using the CycloneDX plugin. This likely involves either defining a custom meta schema for CycloneDX to handle these keywords or configuring the plugin to ignore them if they are not relevant for validation.

AI Summary: Refactor the Komunumo project to replace its current Markdown rendering engine (Flexmark) with the Vaadin Markdown component. This involves updating the codebase to use the new component and ensuring compatibility with existing functionality.

AI Summary: Fix the visual positioning of the title on KomunumoCards that lack images. The current issue causes the title to appear in an unexpected location. A potential solution involves using a placeholder image with a neutral background to maintain consistent card layout.