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dev-deep-dive

Testing & Quality
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Two-stage investigation — causal trace (via @trail-tracer) followed by requirements crystallization (via @echo-analyst + dev-deep-interview). Use when a problem is both unclear in cause AND unclear in scope.

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Source SKILL.md: https://github.com/evolution-foundation/evo-nexus/blob/HEAD/.claude/skills/dev-deep-dive/SKILL.md

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Dev Deep Dive

Derived from oh-my-claudecode (MIT, Yeachan Heo). Adapted for the EvoNexus Engineering Layer.

A two-stage investigation that combines causal tracing with requirements crystallization. Use when both the cause AND the scope of a problem are ambiguous.

Use When

  • Production issue with unclear cause AND unclear scope of fix
  • Bug report that needs both root cause analysis and clarification of "what does fixed look like?"
  • Strategic problem where you don't know what to build OR why the current state isn't working

Workflow

Stage 1 — Causal trace

Hand off to @trail-tracer:

  • Generate competing hypotheses
  • Collect evidence FOR and AGAINST each
  • Apply lenses (systems / premortem / science)
  • Identify the discriminating probe
  • Save report to workspace/development/debug/[C]trace-{topic}-{date}.md

Stage 2 — Requirements crystallization

Hand off to @echo-analyst + dev-deep-interview:

  • Surface unstated assumptions
  • Define scope boundaries
  • Identify missing acceptance criteria
  • Save spec to workspace/development/specs/[C]spec-{topic}-{date}.md

Stage 3 — Synthesis

  • Combine the trace report and the requirements spec
  • Output: a unified understanding of "what's broken AND what done looks like"
  • Hand off to @compass-planner to plan the actual fix

Pairs With

  • @trail-tracer (Stage 1)
  • @echo-analyst (Stage 2)
  • dev-deep-interview (Stage 2)
  • @compass-planner (Stage 3 handoff)