Hands-On
Runnable tutorials, small implementation exercises, and practical follow-ups to the longer engineering articles. These posts are kept separate from the main Technology stream so readers can go directly to the code and operator exercises.
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Hands-On: Build a Jekyll Preview Switch
Build one small Jekyll fixture in current and review modes, then prove which posts each mode includes without touching your site server.
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Hands-On: Build a Fail-Closed Release Evidence Ledger
Run a standard-library Python lab that binds release evidence to one artifact identity and rejects missing gates, stale observations, mixed identities, and unsupported claims.
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Hands-On: Audit an Isolated Agent Testbed Before First Run
Run a model-free Python preflight that rejects shared roots, port collisions, contradictory knowledge ownership, duplicate declarations, and reused inference canaries before provisioning begins.
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Hands-On: Package a Read-Only Component Triage Skill
Run a model-free Python lab that validates invented operational evidence, correlates canonical plans with observed state, and renders a review packet without executing a lifecycle command.
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Hands-On: Tune One llama.cpp Variable at a Time
Run a model-free Python lab that checks one controlled intervention, active-path evidence, and correctness before comparing invented inference results.
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Hands-On: Build a Fail-Closed Inference Benchmark Comparator
Build a standard-library benchmark comparator that rejects incompatible runs and correctness drift before calculating median, direction-aware performance deltas.
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Hands-On: Put a TTS Bridge Through a Model-Free Test Bench
Build a model-free TTS test bench with bounded capability and registry metadata, opaque registered references, a legacy compatibility path, layered health, redacted events, and deterministic cleanup.
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Hands-On: Put Multimodal Context Hygiene Through a Test Bench
Run sanitized conversations through stock and derived Qwen templates, verify exactly what changes, exercise the routing boundary, and inspect the passive model-proxy relationship.
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Hands-On: Build and Test a Passive Proxy Lab
Run a passive proxy, deterministic fake model endpoint, and six privacy and byte-preservation canaries using only the Python standard library.
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Hands-On: Build a Fail-Closed Memory Router
Authorization has to choose the candidate set before relevance ranking begins. This runnable Python router and its seven canaries make that ordering visible and testable.
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Hands-On: Build an Idempotent Intake Manifest
A first import is easy. I built and tested a bounded Python and SQLite manifest that keeps source identity and history intact across reruns, changes, disappearance, and restoration.
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Hands-On: Isolated Remote Development with SSH
A step-by-step tutorial for using SSH keys, isolated accounts, remote editor workspaces, and tunneled Python debugging on the same Mac, another machine, or a VPS.