AI engineering
I Think Debugging Is Almost Dead
The difficult bugs are not protected from AI. What increasingly matters is giving an agent the evidence, access and tests it needs to investigate them.
Field notes
The StackHal blog, by Bahdan Hal.
Investigations and practical guides to AI engineering and the infrastructure behind the web.
Latest field note / AI engineering
I Think Debugging Is Almost Dead
The difficult bugs are not protected from AI. What increasingly matters is giving an agent the evidence, access and tests it needs to investigate them.
The archive 08
AI engineering
Your AI Agent Doesn't Know What Year It Is: A 24-Hour Census of 34,187 Repositories
I analyzed 171,796 dependencies across all 34,187 repositories created on September 4, 2026. Here is why your AI coding agent does not know what year it is, and why only strict compilers survived.
AI engineering
BMAD vs GSD on Claude Fable 5.1 and GPT-5.6 Sol: The September 2026 Verdict
Claude Fable 5.1 and GPT-5.6 Sol redefined AI coding. Here is why BMAD roleplay collapsed, why vibe coding drifts, and how Spec-Driven Development and Plan Mode became the 2026 industry standard.
PHP and cloud security
The Retired Azure SDK for PHP Can Fail Quietly
Two transport-security paths in Microsoft's archived PHP SDK can keep Azure requests working while weakening TLS verification or proxy routing.
Apple Wallet
PKPass Signature Errors: What to Check Before Rebuilding the Bundle
Diagnose PKPass signatures by checking ZIP structure, manifest SHA-1 hashes, detached PKCS#7, and certificates.
DNS
DNS Delegation Explained: From Root to Authoritative Nameserver
Follow a DNS lookup across recursive resolution, delegation, glue, authoritative data, and DNSSEC.
Reverse proxies
Nginx to Caddy Migration: Common Rewrite Rules and Hidden Traps
A practical migration guide with real equivalents for locations, proxy_pass, redirects, headers, and path prefixes.
Email authentication
BIMI Not Working? A Practical Guide to DMARC, SVG Tiny PS, DNS Records, and VMC
Diagnose DMARC enforcement, SVG Tiny PS, DNS records, HTTPS hosting, and VMC or CMC certificate requirements.
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Written by Bahdan Hal.
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