Fast LLM + Human-in-the-Loop classification post; refresh featured post & series

[anishk123]

This adds a new ML Data Engineering blog post and refreshes the homepage's Featured Post and Featured Series.

What changed

• New post: _posts/2026-07-11-fast-llm-human-in-the-loop-classification.md — "How a Three-Person Team Used Cheap, Fast LLMs + Human-in-the-Loop to Classify Hundreds of Millions of Documents in ~2 Months." Content adapted from the source doc; formatting cleaned up for the web (bulleting, code/table blocks, the recurring "Fast Model → Judge Model → SME Review → Ingest → Iterate" mantra styled as callouts) with the wording unchanged.
• Tagged featured (dated 2026-07-11, so it becomes the newest Featured Post) and content-trust-series (so it joins the Featured Series).
• PhotoDNA post: removed the content-trust-series tag from _posts/2026-01-20-photodna-csam-detection.md so it drops out of the featured series.

Visuals

Three on-brand SVG diagrams (Scribd palette) are embedded in the post:

• The repeatable loop — under Workflow Overview (the spot flagged for a diagram): Fast Model → Judge → SME → Ingest → Iterate.
• Breadth-to-precision funnel — under Sampling Strategy: 100% fast-model labels → 1% validation → 0.1% judge → SME reviews only disagreements.
• Human-in-the-loop — under The Core Point: model proposes, humans decide, deterministic rules apply.

Assets live in post-images/2026-fast-llm-hitl/.

Review fixes

• Added tag/llm/index.md so the new llm tag no longer 404s (Cursor Bugbot).
• Fixed the Appendix B Mermaid (quoted node labels containing parentheses so it renders) and pointed it at the rendered diagram above.

Resulting homepage state

• Featured Post: this new post.
• Featured Series (site.featured_series: content-trust-series, shows 2): Dual-Embedding Trust Scoring + this new post. PhotoDNA is no longer in the series.

No _config.yml change needed — featured_series is already content-trust-series.

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Note

Low Risk
Static Jekyll blog and image assets only; no runtime, auth, or config changes beyond post front matter and a tag index page.

Overview
Adds a new featured ML Data Engineering article on scaling document classification with fast LLMs, judge models, SME review in Google Sheets, and Databricks batch workflows, tagged for the content-trust-series so it surfaces on the homepage.

Homepage / series: The PhotoDNA post loses content-trust-series so the featured series slot (two posts under site.featured_series) shifts to Dual-Embedding Trust Scoring plus this new piece instead of PhotoDNA.

Assets & tags: Three branded SVGs under post-images/2026-fast-llm-hitl/ illustrate the loop, sampling funnel, and human-in-the-loop flow. A new tag/llm/index.md page fixes navigation for the post’s llm tag.

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