Eshan Roy — Engineering Journal https://eshan.tonmoyinfrastructure.org Technical deep-dives into systems engineering, Rust concurrency, Linux kernels, and AI agents. en-us Thu, 22 Oct 2026 14:09:32 GMT Engineering OpenMail: Modern Self-Hosted Mail Infrastructure with Zero-CLI Configuration https://eshan.tonmoyinfrastructure.org/journal/self-hosting-modern-webmail-openmail https://eshan.tonmoyinfrastructure.org/journal/self-hosting-modern-webmail-openmail Why self-hosted email infrastructure remains essential for digital sovereignty, and how OpenMail bridges legacy IMAP/SMTP protocols with modern reactive web ergonomics. Thu, 15 Oct 2026 00:00:00 GMT m.eshanized@gmail.com (Eshan Roy) High-Performance Concurrency in Rust: Lessons from Building Veda and Polaris https://eshan.tonmoyinfrastructure.org/journal/high-performance-rust-allocators-and-concurrency https://eshan.tonmoyinfrastructure.org/journal/high-performance-rust-allocators-and-concurrency Practical lessons learned building low-latency parallel runtimes, lock-free work-stealing deques, and declarative procedural macro engines in production Rust. Mon, 12 Oct 2026 00:00:00 GMT m.eshanized@gmail.com (Eshan Roy) Why Chatbots Fail at Coding: Enforcing Deterministic Policy Gates in Autonomous Agents https://eshan.tonmoyinfrastructure.org/journal/deterministic-policy-gates-for-ai-coding https://eshan.tonmoyinfrastructure.org/journal/deterministic-policy-gates-for-ai-coding Why prompt engineering alone cannot secure AI coding agents, and how compiled AST verification and non-bypassable policy gates turn unpredictable model outputs into reliable repository mutations. Thu, 08 Oct 2026 00:00:00 GMT m.eshanized@gmail.com (Eshan Roy) Designing Kyro: Local-First Desktop Automation with Tauri v2, Rust, and MCP https://eshan.tonmoyinfrastructure.org/journal/designing-zero-trust-desktop-agents-kyro https://eshan.tonmoyinfrastructure.org/journal/designing-zero-trust-desktop-agents-kyro How we built Kyro, a local-first autonomous desktop AI agent that bridges screen understanding and real computer use with zero-trust local SQLite privacy and OS Keyring security. Fri, 02 Oct 2026 00:00:00 GMT m.eshanized@gmail.com (Eshan Roy) Architecting Snigdha OS: Custom Kernel Switching, Minimal Arch Base, and i3wm Workstation Ergonomics https://eshan.tonmoyinfrastructure.org/journal/snigdha-os-custom-linux-engineering https://eshan.tonmoyinfrastructure.org/journal/snigdha-os-custom-linux-engineering How we engineered an Arch-based Linux ecosystem tailored for developer productivity, systems programming, and penetration testing, featuring custom kernel tooling and automated PKGBUILD pipelines. Thu, 24 Sep 2026 00:00:00 GMT m.eshanized@gmail.com (Eshan Roy) Inside M31A: Building a Rust-Native Autonomous Engineering Runtime https://eshan.tonmoyinfrastructure.org/journal/building-m31a-runtime-architecture https://eshan.tonmoyinfrastructure.org/journal/building-m31a-runtime-architecture A comprehensive architectural breakdown of M31A, explaining why intelligence is not authority, how the 10-tier downward module hierarchy functions, and how two-phase SQLite recovery prevents workspace corruption. Fri, 18 Sep 2026 00:00:00 GMT m.eshanized@gmail.com (Eshan Roy)