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A technical newsletter for builders who want clear, sourced analysis of software, AI, infrastructure, markets, and engineering systems.
Systems, constraints, and repair
Replacing a VPS Reverse SSH Tunnel Without Losing Rollback
How I traced slow self-hosted services to a reverse SSH path, moved public traffic to Cloudflare Tunnel one hostname at a time, …
From Noisy Kenyan ID OCR to JSON with MLX and Candle
Fine-tune a 50M-parameter model on synthetic Kenyan ID OCR, measure field-level accuracy, and package the fused F16 weights for …
From PP-OCRv6 Text to Kenyan ID JSON
A measured walkthrough of the modes, schema, synthetic fixture, and small understanding model I put around PP-OCRv6 to extract …
Schedule Codex Routines as Finite Runs
How my Mattermost bridge keeps recurring schedules outside Codex, gives each run explicit state, and records the result without …
How I Run Codex from Mattermost on My Phone
The architecture, bridge, and security boundary behind my self-hosted Mattermost interface to Codex on a local development …
Tracing a Laggy Ubuntu Desktop to Intel Display Power Saving
A Dell Latitude 7430 passed the usual CPU, memory, storage, and graphics checks but still felt laggy. An i915 PSR2 warning led to …