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ghm-harvest

@mattgierhart/PRD-driven-context-engineering
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SKILL.md

name ghm-harvest
description Extracts durable insights from temp/ files to SoT during EPIC Phase E. Triggers at EPIC completion or explicit `/ghm-harvest` invocation. Outputs new SoT entries and archive manifest.

Harvest

Extract durable insights from temporary files to Source of Truth during EPIC Phase E (Finish).

Workflow Overview

  1. Enumerate Temps → List all temp/ files from current EPIC
  2. Identify SoT-worthy → Determine what should persist
  3. Format Entries → Convert to proper SoT templates
  4. Archive → Move temps to archive, update manifest

Core Output Template

Element Definition Evidence
Temp Files Files processed List with paths
New SoT Entries IDs created BR-XXX, UJ-XXX, etc.
Archive Manifest What was archived Paths and dates
Discarded What was not kept Reason for each

Harvest Decision Matrix

Content Type Action Destination
Business rule discovered Extract SoT/SoT.BUSINESS_RULES.md
User flow documented Extract SoT/SoT.USER_JOURNEYS.md
API design finalized Extract SoT/SoT.API_CONTRACTS.md
Customer feedback captured Extract SoT/SoT.CUSTOMER_FEEDBACK.md
Session notes Archive only archive/YYYY-MM/
Scratch work Discard Delete after review

Step 1: Enumerate Temp Files

  1. Read EPIC Section 3A for temp file references
  2. List all files in temp/ directory
  3. Match temps to EPIC (by date or naming)

Checklist

  • All EPIC-referenced temps identified
  • Temp directory scanned
  • Files categorized by content type

Step 2: Identify SoT-Worthy Content

For each temp file, evaluate:

Question If Yes If No
Is this a business rule? Extract as BR-XXX Continue
Is this a user flow? Extract as UJ-XXX Continue
Is this an API design? Extract as API-XXX Continue
Is this customer evidence? Extract as CFD-XXX Continue
Is this useful context? Archive Continue
Is this scratch work? Discard -

Checklist

  • Each temp file evaluated
  • Extract/Archive/Discard decision made
  • Decisions documented

Step 3: Format SoT Entries

For each extracted item:

  1. Generate appropriate ID using ghm-id-register
  2. Format per SoT template
  3. Add cross-references
  4. Insert into correct SoT file

Entry Template

### [ID]: [Title]

**Status**: Active
**Created**: YYYY-MM-DD
**Source**: temp/[filename].md (EPIC-XX)
**Cross-References**: [Related IDs]

[Extracted content, properly formatted]

Checklist

  • All extracts have valid IDs
  • Formatting matches SoT templates
  • Cross-references verified

Step 4: Archive and Cleanup

  1. Create archive directory: archive/YYYY-MM/
  2. Move processed temps to archive
  3. Generate manifest
  4. Update EPIC Phase E checklist

Archive Manifest Template

## Archive Manifest: EPIC-XX

**Date**: YYYY-MM-DD
**Archived To**: archive/YYYY-MM/

### Extracted to SoT
| Temp File | New ID | SoT File |
|-----------|--------|----------|
| temp/file.md | BR-XXX | SoT.BUSINESS_RULES.md |

### Archived Only
| Temp File | Reason |
|-----------|--------|
| temp/notes.md | Session context |

### Discarded
| Temp File | Reason |
|-----------|--------|
| temp/scratch.md | No durable value |

Quality Gates

Pass Checklist

  • All temps processed (none orphaned)
  • Extracted content has valid IDs
  • Archive manifest is complete
  • EPIC Phase E checklist updated

Testability Check

  • SoT entries are findable by ID
  • Archive manifest matches actual files
  • Temp directory is clean

Anti-Patterns

Pattern Example Fix
Orphan temps Temps not in manifest → Process all files
Lost context Archive without manifest → Always create manifest
Over-extraction Everything becomes SoT → Apply decision matrix
Under-extraction Valuable insights lost → Review before discard

Boundaries

DO:

  • Extract durable insights
  • Format per templates
  • Create complete manifests
  • Clean up temps

DON'T:

  • Create new analysis
  • Modify conclusions
  • Skip the manifest
  • Delete without review

Handoff

After harvest completes:

  • SoT files updated with new entries
  • Temps archived with manifest
  • EPIC Phase E marked complete
  • Ready to close EPIC