Field notes for people who ship.

CLAUDE.md Rules That Survive Production: What a Year Taught Us

The difference between a CLAUDE.md that works and one that gets ignored is not writing quality — it is enforcement, specificity, and scars. After a year of running a real store on Claude Code, here is the anatomy of rules that hold.

Productivity6 min

Best Obsidian Vault Templates & Starter Kits, Ranked for 2026

Obsidian gives you an empty folder and infinite freedom — which is exactly why most vaults are abandoned by week two. The fix is starting from a structure someone already debugged. Here are the vault templates worth starting from, ranked by the problem they solve.

Best Supabase + Next.js Starter Kits in 2026 (Auth, Stripe, SaaS)

The Supabase + Next.js boilerplate market sorted itself into two clear camps this year: speed kits for solo founders and architecture platforms for teams. Picking the wrong camp costs more than the license fee — here is the map.

Tutorials7 min

gstack Review 2026: What Garry Tan's Stack Doesn't Cover

Garry Tan's gstack is the most-starred Claude Code configuration on GitHub, and it earns it. But it's an engineering stack by design — and if you run a business on Claude Code, engineering is only half the job. A field comparison from an operator, not a spectator.

We Packaged the Claude Code Config That Runs a Real Store

For a year, Claude Code has been the architect, builder, reviewer, deployer, and growth team behind this site. The configuration grew scar by scar — and it turned out to be worth more than most of our products. So we sanitized it and packaged it.

Finance7 min

84-Month Car Loans Cost $6,208 More — Here Is the Math

A third of new car loans now run longer than six years. We ran the average Experian loan — $43,925 at 6.39% — through every term from 36 to 84 months. The monthly payment drops 24%. The interest bill climbs 42%. And on an 84-month loan you owe more than the car is worth for 30 of those months.

Jul 16

Tutorials5 min

How to Write Suno Prompts That Work: Style, Tags & Structure

Suno Custom Mode has three fields, not one — and mixing them up is why generations come out generic. Here is how to structure Style of Music, Lyrics, and Exclude Styles so you get the song you hear in your head.

Jul 6

GST 2.0 Rate Changes: Old vs New Rates on 170+ Items (2026)

The 22 September 2025 GST overhaul killed the 12% and 28% slabs. Cement and small cars dropped to 18%, individual insurance went exempt — but group insurance did not, and the tobacco hike was quietly deferred. Here is what actually changed.

Jul 6

Industry Insights8 min

Google Lost Two of Its Greatest AI Researchers in 48 Hours — And Alphabet Paid $250 Billion for It

In 48 hours, Google lost the co-author of the Transformer architecture to OpenAI and the creator of AlphaFold to Anthropic. Alphabet's market cap dropped $250 billion. This is not routine talent churn.

Jun 23

Industry Insights8 min

ChatGPT Market Share Falls Below 50%: What Gemini and Claude's Surge Means for Developers (June 2026)

For the first time since ChatGPT launched in November 2022, OpenAI holds less than half the AI assistant market at 46.4%. Gemini is at 27.7%, Claude at 10.3% with a 13% paid conversion rate that leads the field. The single-platform era of AI development is over.

Jun 23

Tutorials7 min

Imagen 3 & 4 Shut Down June 24: Migrate to Gemini Image (2026)

All Imagen models on Firebase AI Logic shut down June 24, 2026. The replacement is gemini-2.5-flash-image — here are the exact API changes, updated code in Python, Node.js, Swift, and Kotlin, and the one Imagen capability with no replacement anywhere.

Jun 22

Industry Insights8 min

Agentjacking: How Fake Sentry Errors Hijack Claude Code and Cursor (2026)

One HTTP POST. No credentials required. 85% success rate against Claude Code, Cursor, and Codex simultaneously. Tenet Security disclosed agentjacking on June 12 — prompt injection at the observability layer — and the exposure math is ugly.