https://dil.dev/notes/ Engineering notes from building production AI and web systems. en-gb Tue, 03 Nov 2026 00:00:00 GMT https://dil.dev/notes/resumable-line-provisioning/ https://dil.dev/notes/resumable-line-provisioning/ Tue, 03 Nov 2026 00:00:00 GMT A line create command for AI phone receptionists that resumes each step from what the client file already proves, with one critical ordering fix: persist the assistant ID before the SIP create. voice-agents provisioning vapi automation https://dil.dev/notes/pixi-canvas-touch-action-scroll/ https://dil.dev/notes/pixi-canvas-touch-action-scroll/ Mon, 02 Nov 2026 00:00:00 GMT PixiJS defaults to touch-action: none on its canvas, which silently kills page scroll on phones. Three CSS properties and a Playwright audit fix it for good. pixi.js WebGL mobile playwright https://dil.dev/notes/supabase-1000-row-cap-silent-count/ https://dil.dev/notes/supabase-1000-row-cap-silent-count/ Sun, 01 Nov 2026 00:00:00 GMT PostgREST silently caps unpaged selects at 1,000 rows. An admin dashboard counting synced jobs in memory showed 0 for newer users once the table grew past that limit. supabase postgrest debugging admin https://dil.dev/notes/n8n-executions-puller-postgres/ https://dil.dev/notes/n8n-executions-puller-postgres/ Tue, 27 Oct 2026 00:00:00 GMT An edge function on a five-minute cron pulls n8n workflow executions into Postgres oldest-first, with replay safety proven across two backfills and 209 executions writing zero duplicate events. n8n postgres pg_cron event-store https://dil.dev/notes/twilio-reply-webhook-basic-auth/ https://dil.dev/notes/twilio-reply-webhook-basic-auth/ Sun, 25 Oct 2026 00:00:00 GMT An open webhook on a plumber lead network accepted any POST, meaning a spoofed YES could claim a lead and trigger a card charge. Basic auth fixed it with a zero-downtime rollout. webhooks security twilio n8n https://dil.dev/notes/broadcast-typed-send-confirm/ https://dil.dev/notes/broadcast-typed-send-confirm/ Thu, 22 Oct 2026 00:00:00 GMT One misclick in a members composer could mail 860 people instantly. Two commits fixed that: a typed confirm step and a split send-test endpoint. safety admin-ui api-design email https://dil.dev/notes/pm2-runtime-secret-silent-cleanup/ https://dil.dev/notes/pm2-runtime-secret-silent-cleanup/ Mon, 19 Oct 2026 00:00:00 GMT A scheduled cleanup reported success for months while doing nothing. pm2 never read the droplet .env, so CLEANUP_SECRET was undefined, every call got a 403, and an echo fallback swallowed the error. pm2 devops node debugging https://dil.dev/notes/stripe-stale-payment-failed-replay/ https://dil.dev/notes/stripe-stale-payment-failed-replay/ Sun, 18 Oct 2026 00:00:00 GMT A checkout decline raised invoice.payment_failed before the subscription row existed, the handler threw, and Stripe redelivered the event after the customer paid, flipping them to past_due. stripe webhooks billing saas https://dil.dev/notes/voice-agent-transcriber-latency/ https://dil.dev/notes/voice-agent-transcriber-latency/ Fri, 16 Oct 2026 00:00:00 GMT Three transcribers failed or lagged before landing on Soniox primary with Deepgram fallback. The 1.8 s average from one provider caused the agent to cut callers off nine times. voice-ai transcription latency sip multilingual https://dil.dev/notes/llm-length-target-was-the-floor/ https://dil.dev/notes/llm-length-target-was-the-floor/ Wed, 14 Oct 2026 00:00:00 GMT When the length target and the throw floor are the same number, the model clusters at it. Separating aim, expansion threshold, throw floor and ceiling fixed the distribution. llm content-pipeline n8n prompt-engineering https://dil.dev/notes/llm-capture-job-invented-dates/ https://dil.dev/notes/llm-capture-job-invented-dates/ Tue, 13 Oct 2026 00:00:00 GMT A nightly capture job let Haiku write the H1 date and it hallucinated it on 10 of 18 notes. automation llm claude shell-scripting https://dil.dev/notes/idle-watchdog-killed-thinking-models/ https://dil.dev/notes/idle-watchdog-killed-thinking-models/ Mon, 12 Oct 2026 00:00:00 GMT A file-size watchdog could not tell a thinking model from a wedged process. A throttled heartbeat sidecar fixed it without letting genuine wedges survive. shell ai-tooling debugging streaming https://dil.dev/notes/agent-loop-hollow-gate-stack/ https://dil.dev/notes/agent-loop-hollow-gate-stack/ Sun, 11 Oct 2026 00:00:00 GMT Every gate stage defaulted to an empty string, so 15 tasks logged gate:none and the harness called the run clean. A severity-ladder preflight now blocks a hollow gate stack before task selection. agent-loop ci testing automation https://dil.dev/notes/ios-scroll-seek-and-stale-scrolltrigger/ https://dil.dev/notes/ios-scroll-seek-and-stale-scrolltrigger/ Sat, 10 Oct 2026 00:00:00 GMT iOS holds a paused video at readyState 1 so every seek stays pending and the frame paints black. A second bug: ScrollTrigger points computed once go stale when page content grows. ios video scroll IntersectionObserver https://dil.dev/notes/six-local-supabase-stacks-resource-exhaustion/ https://dil.dev/notes/six-local-supabase-stacks-resource-exhaustion/ Thu, 08 Oct 2026 00:00:00 GMT Running six local Supabase stacks simultaneously pushed swap to 96% and caused repeated OOM failures during db reset. The real lesson is surfacing infrastructure exhaustion before blaming your code. supabase docker local-dev debugging https://dil.dev/notes/silent-redirect-swallowed-uploads/ https://dil.dev/notes/silent-redirect-swallowed-uploads/ Tue, 06 Oct 2026 00:00:00 GMT A submitted upload looked lost because a route redirect swallowed it into a magazine edition. Here is how the redirect was found and removed. routing nuxt debugging uploads https://dil.dev/notes/notes-prerendered-markdown-not-a-cms/ https://dil.dev/notes/notes-prerendered-markdown-not-a-cms/ Sat, 03 Oct 2026 00:00:00 GMT How the dil.dev/notes pipeline works: markdown files, a Vite plugin, strict frontmatter validation, and no CMS in sight. vite markdown json-ld static-site https://dil.dev/notes/skull-lab-one-turn-eight-stops/ https://dil.dev/notes/skull-lab-one-turn-eight-stops/ Fri, 02 Oct 2026 00:00:00 GMT The home page is now the skull lab: a Tripo sugar-skull bust rotates one full revolution across eight project stops, driven entirely by scroll position. three.js Lenis scroll WebGL https://dil.dev/notes/reduced-motion-skips-the-lab-engine/ https://dil.dev/notes/reduced-motion-skips-the-lab-engine/ Thu, 01 Oct 2026 00:00:00 GMT Reduced-motion visitors skip engine loading and SplitText entirely. The smoke transition falls back to plain navigation so nothing breaks. accessibility gsap webgl page-transitions https://dil.dev/notes/seo-every-url-on-the-apex-host/ https://dil.dev/notes/seo-every-url-on-the-apex-host/ Thu, 01 Oct 2026 00:00:00 GMT Every URL on dil.dev points its canonical, og:url and sitemap loc at the apex host. A postbuild script enforces this so a stray Netlify subdomain never leaks into the index. seo canonical sitemap netlify https://dil.dev/notes/thank-you-page-is-not-a-lead/ https://dil.dev/notes/thank-you-page-is-not-a-lead/ Wed, 30 Sep 2026 00:00:00 GMT Counting a thank-you page visit as a conversion inflates your lead numbers. Fire tracking only after Netlify acknowledges a real submission. netlify analytics forms conversion https://dil.dev/notes/consent-under-the-mark-not-a-banner/ https://dil.dev/notes/consent-under-the-mark-not-a-banner/ Sun, 27 Sep 2026 00:00:00 GMT The preloader asks for analytics consent once, under the mark. No banner, no fixed control. Here is how the pattern works and why it holds. analytics consent GA4 privacy https://dil.dev/notes/skull-orbit-year-count-view/ https://dil.dev/notes/skull-orbit-year-count-view/ Sat, 26 Sep 2026 00:00:00 GMT Year, stop count and VIEW orbit the skull on a tilted ring that dims labels as they pass behind it. This is the only place translate and parallax are permitted. three.js WebGL scroll orbit https://dil.dev/notes/play-hand-tracking-local-instrument/ https://dil.dev/notes/play-hand-tracking-local-instrument/ Fri, 25 Sep 2026 00:00:00 GMT dil.dev has a browser instrument hidden behind three entry points. Start loads ~20 MB of self-hosted MediaPipe and Tone.js; the camera feed is never rendered or sent anywhere. mediapipe tone.js webgl privacy https://dil.dev/notes/3d-face-mesh-58mb-to-1-6mb/ https://dil.dev/notes/3d-face-mesh-58mb-to-1-6mb/ Wed, 23 Sep 2026 00:00:00 GMT An AI-generated head mesh came out at 57.97MB and 987,094 vertices. One glTF-Transform command took it to 1.61MB and 89,200 vertices for a scroll-driven three.js hero. three.js WebGL glTF performance https://dil.dev/notes/smoke-page-transitions-webgl/ https://dil.dev/notes/smoke-page-transitions-webgl/ Tue, 22 Sep 2026 00:00:00 GMT A raw WebGL 1 shader blooms smoke from the click, swaps the page behind it without a reload, then drains toward the pointer. Plus the Playwright timing bug that made my checks sample 1.4s late. WebGL GLSL Playwright testing https://dil.dev/notes/netlify-config-path-vs-redirect/ https://dil.dev/notes/netlify-config-path-vs-redirect/ Mon, 21 Sep 2026 00:00:00 GMT A forced /api/* rewrite pointed at /.netlify/functions/api, a URL that stops existing once a v2 function sets config.path. Every data route 404'd in production. The fix was deleting one redirect rule. Netlify serverless debugging