---
title: "AFeng Blog"
url: "https://afengblog.com/en"
language: "en"
---

# AFeng Blog

> Notes and lessons from exploring and building software products

## Featured Articles

- [Tintdex Terminal Theme Workbench — Preview, Tune, and Export 2,037 Color Schemes to 16 Formats](https://afengblog.com/en/blog/tintdex-terminal-color-schemes.html) (2026-11-02 · Tools & Productivity): Tired of converting theme files and guessing hex codes every time I switched terminal emulators, I built Tintdex (tintdex.afengim.com) — an open-source workbench for previewing 2,037 terminal color schemes across real CLI scenes, auditing WCAG 2 contrast, tuning colors in OKLCH space, and exporting to 16 config formats.

## Latest articles

- [Tintdex Terminal Theme Workbench — Preview, Tune, and Export 2,037 Color Schemes to 16 Formats](https://afengblog.com/en/blog/tintdex-terminal-color-schemes.html) (2026-11-02 · Tools & Productivity): Tired of converting theme files and guessing hex codes every time I switched terminal emulators, I built Tintdex (tintdex.afengim.com) — an open-source workbench for previewing 2,037 terminal color schemes across real CLI scenes, auditing WCAG 2 contrast, tuning colors in OKLCH space, and exporting to 16 config formats.
- [Why PostgreSQL 19 Broke Its 10-Year Autumn Release Streak — LLM Bug Discovery, a 74.6% Back-Patch Surge, and 31 Committers at Capacity](https://afengblog.com/en/blog/postgresql-19-release-delay-llm-bugs.html) (2026-11-01 · AI Exploration): After ten consecutive major releases landed like clockwork between mid-September and mid-October, PostgreSQL 19 pushed its planned GA date to November 19, 2026, adding an unusual Beta 4 and RC 2 while reverting 8 to 10 major features late in testing. The bottleneck is not sloppy AI-written code, but an unprecedented wave of verified LLM-discovered vulnerabilities—44 CVEs across three quarterly updates and a 74.6% single-year surge in cross-release back-patches. With only 31 active committers worldwide reviewing fixes across five supported branches, PostgreSQL has become the first flagship open-source infrastructure project to hit the human verification ceiling in the AI auditing era.

## Sections

- [All Articles](https://afengblog.com/en/blog)
- [Archive](https://afengblog.com/en/archive)
- [Categories](https://afengblog.com/en/category)
- [Tags](https://afengblog.com/en/tag)
- [Projects](https://afengblog.com/en/projects)
- [Prompts](https://afengblog.com/en/prompts)