https://timurista.ai/writing/ Field notes on managing AI-assisted software delivery: how I scope the work, what I check before anything ships, and the bugs that got through anyway. en-us https://timurista.ai/writing/overtrain-mixed-reality-week/ https://timurista.ai/writing/overtrain-mixed-reality-week/ Thu, 08 Oct 2026 00:00:00 GMT A week building Overtrain, a mixed-reality soccer trainer for Meta Quest, plus a desktop mode and a phone app from the same code. Most of the hard work was spatial: getting the play area to sit on the real floor, inside the boundary you drew, and stay there. Here's what broke, how each fix worked, and what I'd do differently. https://timurista.ai/writing/when-the-agent-finishes-yesterdays-task/ https://timurista.ai/writing/when-the-agent-finishes-yesterdays-task/ Wed, 07 Oct 2026 00:00:00 GMT What should a product do when an async agent's result arrives after the user changed or cancelled the goal? A deterministic demo with 11 synthetic schedules and three admission policies, the race a pre-check misses, and the wording for current, pending, cancelled and conflict states. https://timurista.ai/writing/outrider-three-js-wasm-renderer/ https://timurista.ai/writing/outrider-three-js-wasm-renderer/ Fri, 02 Oct 2026 00:00:00 GMT Outrider is a Meta Quest game where your indoor bike is the controller. Where to find its best moments, and what I learned when three.js spent too much CPU on draw calls: I wrote a lean draw loop in TypeScript and again in Rust/WASM, benchmarked all three, and the language mattered less than the leanness. https://timurista.ai/writing/trendvesting-debugging-a-rebalance-loop/ https://timurista.ai/writing/trendvesting-debugging-a-rebalance-loop/ Fri, 25 Sep 2026 00:00:00 GMT A live ETF agent sold 9 shares of SGOV and bought them back once a minute, 183 times in a day. How I found the loop, the four bugs behind it, the fixes and tests, and the diagnostics call that now catches all of them. https://timurista.ai/writing/unalloc-who-pays-for-the-kv-cache/ https://timurista.ai/writing/unalloc-who-pays-for-the-kv-cache/ Tue, 15 Sep 2026 00:00:00 GMT A guide for platform and FinOps leads who have to split shared AI spend: which meter to charge by, where idle capacity goes, how to give every dollar one path into the ledger, and what a joined ledger can answer. Backed by measurements from unalloc, my open-source cost-attribution tool. https://timurista.ai/writing/timurista-ai-rebuilding-this-website/ https://timurista.ai/writing/timurista-ai-rebuilding-this-website/ Mon, 14 Sep 2026 00:00:00 GMT How I scoped, reviewed and shipped the rebuild of this site: a framing I pulled back within the hour, numbers I deleted because I couldn't source them, a form that showed my phone number to the wrong people, and a retired Worker route that quietly shadowed the new API. https://timurista.ai/writing/unalloc-validating-ai-cost-attribution/ https://timurista.ai/writing/unalloc-validating-ai-cost-attribution/ Mon, 14 Sep 2026 00:00:00 GMT How I scoped and checked unalloc, an open-source tool that joins Kubernetes and LLM provider bills: nine defects caught before release, a budget-capped H100 run with a verified teardown, a paper build that refuses silent typos, and a headline I softened because no meter is ground truth. https://timurista.ai/writing/tendform-managing-a-solo-saas-build/ https://timurista.ai/writing/tendform-managing-a-solo-saas-build/ Sun, 13 Sep 2026 00:00:00 GMT How I scoped, reviewed and validated a HIPAA-capable form builder I built alone: the rules I wrote down, the checks I trusted, the 14 bugs that got through anyway, and the process I'd change. https://timurista.ai/writing/tigermill-quality-gates-for-ai-content/ https://timurista.ai/writing/tigermill-quality-gates-for-ai-content/ Sun, 13 Sep 2026 00:00:00 GMT How I defined acceptance for a novel-to-webtoon pipeline: a gate after every stage, approvals that name who made them, spend behind a human trigger, and tests that guard the defects I already paid for once. https://timurista.ai/writing/trendvesting-validating-production-ai/ https://timurista.ai/writing/trendvesting-validating-production-ai/ Sun, 13 Sep 2026 00:00:00 GMT How I review and validate an AI trading system I own: change records with production numbers, invariant tests, reconciliation audits and calibration checks, and the numbers they overturned.