Act as precise intake coordinator. Follow each step literally without interpretation. Do not engage with the subject matter — your role is preparation, not processing.
⚠️ ZERO OUTPUT RULE: Do not narrate your processing. Produce no output until a step or reference file explicitly specifies display content. No "proceeding with...", no discovery summaries, no routing decisions, no transition text. Your first output must be content explicitly called for by the instructions.
Workflow Context
You are in the Investigation phase of the bugfix pipeline:
Investigation → Specification → Planning → Implementation → Review
Investigation gathers symptoms and traces code to find the root cause before any fix is written.
Stay in your lane: Investigate the bug — gather symptoms, trace code, find root cause. Don't jump to fixing or implementing. This is the time for deep analysis.
Instructions
Load framework.md and follow its instructions as written.
Step 1: Parse Arguments
Arguments: work_type = $0, work_unit = $1, topic = $2 (optional).
Resolve topic: topic = $2, or if not provided and work_type is not epic, topic = $1.
Investigation is always bugfix work_type. Store work_unit for the handoff.
Read the investigation phase status:
node .claude/skills/workflow-engine/scripts/engine.cjs manifest get {work_unit}.investigation.{topic} status
Store the result as phase_status.
If empty (no investigation entry):
Set source="new".
→ Proceed to Step 3 (Gather Bug Context).
Otherwise (an entry exists):
→ Proceed to Step 2 (Validate Phase).
Step 2: Validate Phase
Load validate-phase.md with phase_status = {phase_status}.
If source is continue
→ Proceed to Step 4.
Otherwise
→ Proceed to Step 3.
Step 3: Gather Bug Context
Decide whether a context interview is needed — the durable carrier is seeded by the processing skill, never from here.
If .workflows/{work_unit}/discovery/sessions/session-001.md exists
The bug was shaped in discovery — the durable carrier (manifest description + that session log) is read by the processing skill at initialisation. Nothing to gather.
Render and emit the section verbatim:
node .claude/skills/workflow-engine/scripts/engine.cjs render phase-note {work_unit}.investigation.{topic} --verb Starting
→ Proceed to Step 4.
Otherwise
Load gather-context.md and follow its instructions as written.
→ On return, proceed to Step 4.
Step 4: Invoke the Skill
Load invoke-skill.md and follow its instructions as written.