Keeping TanStack Query v5 Cache Consistency Intact — Invalidation Boundaries, Optimistic Updates, and SSR Traps, Worked Through with Antigravity
A like that snaps back a moment after you tap it; a stale value that lingers when you return from another tab. This walks through the three places TanStack Query v5 cache consistency breaks, with working code for invalidation boundaries, onMutate rollback, and per-request QueryClient isolation.
How Far Can Android Studio's Migration Agent Take iOS Code Into Kotlin? A Hands-On Evaluation
I fed one screen of my ukiyo-e wallpaper app to Android Studio's migration agent. What the generated Kotlin got right, the 12 fixes it needed, and the review workflow I now run before accepting any of it.
Before Android 17 Stops Honoring Portrait Lock — Auditing Four Wallpaper Apps for Large-Screen Resizability
How I audited four portrait-locked wallpaper apps with an Antigravity agent before Android 17 starts ignoring orientation and resize restrictions on large screens.
Measuring the Break-Even Point Between Google AI Pro and Ultra — 14 Days of Quota Data from Parallel Agent Runs
Is AI Ultra ($100/month, 5x the Pro limits) actually worth it? A Python harness that aggregates daily quota consumption from agent logs, 14 days of real measurements, and a formula that converts wait time into money to settle the question.
This Week at Antigravity Lab: Five Posts on Deciding How Much to Hand Over to Agents
Editor's notes on five posts: sizing agent tasks by what you can review, delegating dependency updates by risk tier, a StoreKit 2 migration case study, and a Japanese UI setup guide.
Handing Dependency Updates to Antigravity Agents — Risk Tiers, Verification, and Rollback
How far can you trust Antigravity agents with dependency updates? A four-tier risk model that corrects semver optimism, worktree-isolated lots, a fixed verification script, and a rollback-first ledger — the operations design I settled on while maintaining multiple apps.
Running Gemini's Managed Agents API: Where Cloud Execution Ends and My Local Agents Begin
A hands-on record of launching Gemini's Managed Agents (public preview) from Python — polling, artifact retrieval, and a cost guard — plus five criteria I use to decide what stays on my local CLI agents.
Replacing a Decade-Old SKPaymentQueue with StoreKit 2 — Migrating 4 Wallpaper Apps with an Antigravity Agent
A field report on migrating SKPaymentQueue-based purchase code to StoreKit 2's Transaction.currentEntitlements across four wallpaper apps — what I delegated to an Antigravity agent, and the traps I only found on real devices.
Size Antigravity Agent Tasks by What You Can Review — a Practical Cure for Rework
A one-line request cost me forty minutes of agent time and a Monday rewrite. Here is the sizing rule I switched to — tasks I can review in fifteen minutes — with the three actual briefs, acceptance criteria phrasing, and file-boundary rules for worktree parallelism.
Rebuilding Wallpaper Image Delivery Around Resolution Buckets — Letting an Antigravity Agent Own Conversion and Validation
Every new device resolution quietly makes a wallpaper app heavier. I stopped shipping one master image to every device and rebuilt delivery around resolution buckets, WebP/AVIF, and an edge redirect — then handed conversion and validation to an Antigravity agent. Real code and thresholds included.
Choosing the Right Granularity for an Agent's Tools — Bundle or Split?
Should you split an agent's tools finely or bundle them coarsely? A single decision rule, an intentionally asymmetric two-tier design for destructive actions, and real numbers from running six apps.
Why Antigravity Agent Edits Fail With 'patch does not apply' and How to Fix It
Why Antigravity agent edits stall with 'patch does not apply' or 'hunk failed', and how to fix it. Focused on the race where the file changes after the agent reads it, with the settings that stop it from recurring.