Where to Put an Instruction That Keeps Coming Back: Chat, Style, Settings File, or Hook
No comments, please. Do not translate the product name. When an instruction drifts back a few turns later, the fix is usually the location, not the wording. I compared the same sentence across four layers and settled on a rule for which instruction belongs where.
A small script that catches invisible characters in plugin names before you install
Control characters and zero-width characters hiding in plugin or skill names are invisible in a terminal listing. I built six deliberately confusing names, compared what ls actually shows, and wrote a short check you can run before installing anything — plus an honest note on what that check misses.
I decide the prompt cache TTL by where I come back to, not how long I was away
Claude Code v2.1.242 added promptCacheTtl and subagentPromptCacheTtl. Whether the one-hour cache pays off depends on returning to the same directory and the same git state, not on how long the break was. Here is the order I check things in.
Untangling Android Back-Button Ad Gates: A Parallel, Priority-Ordered Redesign with Claude Code
Nested back-button ad gates fired at the wrong moments. The parallel, priority-ordered redesign we shipped in v2.1.0, with Claude Code, Kotlin, and tests.
11 Days in Crashlytics: A Claude Code Debug Loop Across Two Android Wallpaper Apps
After shipping Beautiful Wallpapers v2.0.0 and Ukiyo-e Wallpapers v1.7.0 in early May, Crashlytics and Play Console threw more than 30 new issues at me in 11 days. This is the operations log of how I drove the fix list down to v2.1.1 / v1.8.1 using Claude Code as a triage partner.
When Claude Code's Sequential Edits Cascade into Failure — Fixing 'old_string not found' and 'not unique' on the Same File
Run several Edits against the same file in one turn and the second or third one suddenly fails with 'not found' or 'not unique'. The cause is order-dependence inside a single context snapshot, and a Read + scoped patches usually rescue it.
When Claude Code's Read Doesn't Reach the End of a File — Catching the PARTIAL view Notice and Sizing offset/limit
When Read returns only part of a large file, Claude Code says so with a PARTIAL view notice. Here is how to catch it, and how to size offset and limit by byte budget rather than line count, with measurements from my own sandbox.
Why Claude Code's Glob and Grep Return Zero Results
When Claude Code's Glob or Grep tool returns no matches even though the files clearly exist, the cause is almost always one of four things. Here's how to triage.
90 Days Building a Solo SaaS with Claude Code — And the Three Things I Got Wrong
A working log from 90 days of building a solo SaaS with Claude Code — design conversations, model routing, and Cloudflare Workers constraints. Revisited months later against primary docs, with three technical claims corrected in place.
Designing Zero-Downtime Database Migrations with Claude Code: A Production Operations Guide
A production guide to designing zero-downtime database migrations with Claude Code. Covers Expand-Contract, NOT NULL additions, renames, backfills, and subagent reviews — practical patterns that survive real production traffic.
Stop the 'old_string is not unique' Error in Claude Code's Edit Tool — A Practical Rewrite Strategy
When Claude Code's Edit tool throws 'old_string is not unique in the file', the root cause is usually that the prompt didn't guarantee a uniquely identifiable target. Here's how to design rewrites that actually stick.
Recipes for a Useful Claude Code Status Line — Show Model, Remaining Context, and Git Branch in One Line
Concrete recipes for a Claude Code status line that displays the active model, remaining context, and git branch in a single line — written in both Bash and Node.js, with the failure modes you should plan for.