← Evgenii Zinner

Systems & Engineering

Technical articles, field notes, and systems troubleshooting filed under Systems & Engineering.

Why I Built Syndicator: Automating Blog Distribution Across X, Bluesky, Mastodon, Threads, and Nostr on a $0 Cloudflare Worker

How I built Syndicator—an open-source, $0/month Cloudflare Worker and KV service that automatically syndicates RSS blog posts across X, Bluesky, Mastodon, Meta Threads, and Nostr with algorithmic link routing and a 3-character URL shortener.

Building AgentPulse - A Windows 11 Widget for Antigravity Quotas

Building AgentPulse in C# / .NET 11 and WinUI 3 to display Google Antigravity model quotas across the Lock Screen, Windows Widgets, and System Tray.

Building Lucky - Why All My Assumptions Were Wrong

What happened when bot engineering met salon reality: killing NLP parsing for a Mini App calendar, dealing with Google Calendar reversion, and hitting the 24h Business API wall.

Building a Custom Pedicure Dust Collector

Engineering a custom salon dust collector from scratch: the fluid dynamics of axial vs turbine vs centrifugal blowers across three hands-on iterations.

Flutter WSL Symlink Hack

Bypassing the CMD.exe UNC path error when building Windows Flutter apps from a WSL filesystem using directory symlinks.

Memories from MZTA: The 30-Year Legacy Bug and the $1/KB Data Extortion

Two field diagnostics from a regional power plant deployment: predatory M2M cellular data throttling and a 30-year-old multi-homed UDP routing bug buried in legacy code.

Field Notes: Why I Build Defensive Flutter Widgets

Flutter's fail-fast layout philosophy crashes the entire app on unbounded constraints. Why I build defensive wrappers like ez_list_view that prioritize visual clues over red screens of death.

Stop Overcomplicating Simple Things

Building EZ QR Generator with Hono, HTMX, and hand-crafted PNG binary chunks to challenge predatory micro-SaaS bloat.

How I Built an Invisible Telegram CRM

Building a zero-cost, automated booking and client CRM directly inside Telegram for a nail studio using Cloudflare Workers, D1 SQLite, and KV.