Is a scraper that works on ten test pages really ready for production? The first version usually is, until bigger datasets bring errors, missing records, and duplicates. This article shows how to design for failures and recovery instead.

Spec-Driven Development: Who Executes a Spec? (Part 4 of 4)

This is the fourth and final part of my attempt at a definition of spec-driven development (SDD), following part 1 , part 2 , and part 3 .

• Spec dictates testable behavior, not how or why
• Continuous spec existence drives development process
• AI coding agents autonomously translate spec to code

1h ago ·dev.to

How I Actually Prove an Offline App Is Offline (Not Just Trust the Marketing)

"Runs offline" is the easiest claim in software to make and one of the least frequently checked. I build an offline AI app, so I'm on the hook for the claim — here's the testing I actually run, which…

• Disable network adapter completely, not just turn off Wi-Fi
• Monitor filesystem for app activity using Process Monitor (Windows) or fsusage (macOS)
• Search entire machine for app traces, aim for zero results

1h ago ·dev.to

git bisect run named the wrong commit 10 out of 10 times — so I gave every commit its own clean room

git bisect run is the right algorithm. What I did not expect is how confidently it lies when you leave it running unattended.

1h ago ·dev.to

Connect Apple Health to opencode: Native MCP Setup

This walks through the exact config, the two values you type twice, and the tool-scoping glob that keeps 16 health tools out of your coding context until you actually ask for them.

• Connect Apple Health to opencode using MCP setup
• Health-export tool run with npx command
• Local MCP bridge eliminates need for vendor account

1h ago ·dev.to