Part 2 - AVX2 Optimization

This release accompanies Part 2 of the Article Series
"Building a High-Performance Vector Database".

Contents:

• AVX2 Optimization
• Switching to flat contiguous array for vectors.

This release corresponds exactly to the code discussed in Part 2.

Part 1 — Baseline Vector Database

This release accompanies Part 1 of the article series
"Building a High-Performance Vector Database."

Contents:

• Baseline in-memory vector engine
• Exact KNN search
• SQLite Virtual Table integration
• Benchmarking framework
• perf profiling setup

This release corresponds exactly to the code discussed in Part 1.