Search the Sovereign AI Blog for articles matching a natural language query, optionally filtered by tag and sorted by relevance or date.

Behaviour matrix:

• query='', sort=* -> list newest-first, optionally tag-filtered

• query!='', sort=relevance -> TF-IDF ranked, optionally tag-filtered

• query!='', sort=date_desc -> TF-IDF filtered (score > 0.001), then sorted by date

Pure read-only, deterministic for a given KB snapshot.

Retrieve the full content of a blog article by its slug.

Returns the article body (Markdown) plus metadata. If the slug does not match any article, returns an Article with error='article_not_found' and other fields at their defaults.

Validate an SGLang configuration for NVIDIA DGX Spark (GB10/SM121A).

Pure pattern-matching against known failure modes documented in the Sovereign AI Blog. No inference, no external calls. Returns critical issues, non-fatal warnings, and a recommended baseline config.

All parameters are optional; supply only what you have. With no inputs you get the recommended config and a 'unknown' verdict.

List all topic tags used across the Sovereign AI Blog corpus, with article counts. Use this to browse the topic space before calling search_blog with a tag filter.