dev@bfd:~/dev-diary$ git show 2026-01
commit 2026-01-25-design-tri-layer-sandbox-and-hibernation-trap
Author: MJ
Date: Jan 25, 2026

2026-01-25 - Design Tri-Layer Sandbox and Hibernation Trap

Timeline

  • (Context) Initialized CodeCrafter agent to assist with Vibe Code Starter Kit Module 08 redesign.
  • (Context) Reviewed existing Module 06 and Module 09 materials to align Module 08 learning objectives.
  • (Action) Refactored 08-tri-layer-sandbox by removing obsolete files and creating new infrastructure (sandbox_pilot.py, Dockerfile).
  • (Action) Implemented sandbox_pilot.py using subprocess for Docker and urllib for local Ollama (gemma2:2b) integration.
  • (Action) Created test_malware.py to verify network isolation in the sandbox.
  • (Observation) Verified sandbox successfully blocked network connections and Gemma 2 correctly identified the failure.
  • (Action) Designed the Automated Catch-Up Review Generator tool concept for students to build.
  • (Action) Defined the Hibernation Trap pedagogical loop where students accidentally try to hibernate the host via V1 script.
  • (Action) Updated sandbox_pilot.py with heuristics to detect and warn about power state modification attempts.
  • (Open Thread) Develop the specific prompt instructions for the Prompt Master agent to generate the Catch-Up Review tool prompt for students.

Context

  • Initialized CodeCrafter agent to assist with Vibe Code Starter Kit Module 08 redesign.
  • Reviewed existing Module 06 and Module 09 materials to align Module 08 learning objectives.

Actions

  • Refactored 08-tri-layer-sandbox by removing obsolete files and creating new infrastructure (sandbox_pilot.py, Dockerfile).
  • Implemented sandbox_pilot.py using subprocess for Docker and urllib for local Ollama (gemma2:2b) integration.
  • Created test_malware.py to verify network isolation in the sandbox.
  • Designed the Automated Catch-Up Review Generator tool concept for students to build.
  • Defined the Hibernation Trap pedagogical loop where students accidentally try to hibernate the host via V1 script.
  • Updated sandbox_pilot.py with heuristics to detect and warn about power state modification attempts.

Observations

  • Verified sandbox successfully blocked network connections and Gemma 2 correctly identified the failure.

Open Threads

  • Develop the specific prompt instructions for the Prompt Master agent to generate the Catch-Up Review tool prompt for students.

Boundary Reminder: Seeds. No maintenance. No roadmap.