Update project status and 2025 issues structure

Added a notice about project completion and end of updates in README.md and issues/README.md. Updated the 2025 issues summary to reflect 12 issues instead of 5, and changed the quick link to issue-180.md. Removed the now-obsolete archive-2025.md file and its references in mkdocs.yml, and added new December issues to the navigation.

update issue-179

Added metadata for date and comments to issue-179.

Update README.md

Update issue-176.md with new research articles

Added new research summaries and links to issue-176.md.

update issue 175

Update issue-172.md

Update README.md

Update mkdocs.yml

fix hyperlink

update mkdocs