Add ConceptSMILE thesis and research blogs page

[koo-ec]

Changes

• Add Mohadeseh Mollapour's ConceptSMILE MSc thesis with the University of Hull repository link and BibTeX.
• Add a Research → Blogs page linking verified public research group blog posts and XWhy explainers.
• Link the new page from the research overview and documentation navigation.

Verification

• YAML navigation parsed and new entry confirmed.
• All local links in modified pages resolve.
• Local documentation build could not start because this workspace cannot download the requested Python runtime; CI will verify the full build.

The earlier marketing documents describe proposed content but do not provide public URLs; the Blogs page links only publicly available posts.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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