{
  "_status": "Engineering plugin has one primary substrate (superpowers) plus inspiration sources we monitor for new ideas.",
  "sources": [
    {
      "id": "superpowers",
      "role": "primary substrate",
      "source": "github.com/obra/superpowers",
      "author": "Jesse Vincent (@obra)",
      "license": "MIT",
      "pin": {
        "sha": "dd7a63ac45233dce0a6c6222a77f205ee7c78750",
        "tag": "v5.0.7",
        "date": "2026-03-31"
      },
      "upstream_head_at_check": {
        "sha": "e7a2d16476bf042e9add4699c9d018a90f86e4a6",
        "date": "2026-04-28"
      },
      "concepts_imported": [
        "lifecycle: brainstorm → spec → plan → TDD → review → finish",
        "subagent dispatch pattern (parallel agent execution)",
        "git-worktree isolation per task",
        "multi-agent code review",
        "TDD discipline"
      ],
      "sync_policy": "Concept-port only. Superpowers explicitly rejects compliance restructures of skills (per their CLAUDE.md). Don't open PRs upstream that restructure to our <what-to-do>/<supporting-info> pattern."
    },
    {
      "id": "gstack",
      "role": "inspiration",
      "source": "github.com/garrytan/gstack",
      "author": "Garry Tan (@garrytan)",
      "license": "MIT",
      "pin": {
        "sha": "30fe6bb11c6915e6264440b8a044ed0dcfbe06e0",
        "version": "1.26.2.0",
        "date": "2026-05-04",
        "added_at": "2026-05-04"
      },
      "concepts_to_consider": [
        "role-based agents (CEO, Designer, Eng Manager, Release Manager, Doc Engineer, QA)",
        "AskUserQuestion gating pattern with anti-rationalization clauses (v1.26.2.0)",
        "plan-mode review skills (plan-eng-review, plan-design-review, plan-ceo-review, plan-devex-review)",
        "skill testing infrastructure (E2E plan-mode tests, classifier outcomes)",
        "DESIGN.md / ETHOS.md / AGENTS.md / ARCHITECTURE.md document conventions",
        "specific skills: investigate, ship, land-and-deploy, freeze/unfreeze, retro, office-hours, pair-agent"
      ],
      "sync_policy": "Concept-port only. Tan's stack is opinionated for his team's workflow and Conductor MCP variant — don't mirror wholesale. Skills that align with our verb (engineering execution) and aren't already covered are candidates. Cross-pollinate to Agent Kit plugin if a skill there is design-focused (design-shotgun, design-html, design-consultation)."
    },
    {
      "id": "mattpocock-skills",
      "role": "inspiration",
      "source": "github.com/mattpocock/skills",
      "author": "Matt Pocock (@mattpocock)",
      "license": "MIT",
      "pin": {
        "sha": "b843cb5ea74b1fe5e58a0fc23cddef9e66076fb8",
        "date": "2026-04-30",
        "added_at": "2026-05-04"
      },
      "skills_at_pin": [
        "diagnose",
        "grill-with-docs",
        "improve-codebase-architecture",
        "setup-matt-pocock-skills",
        "tdd",
        "to-issues",
        "to-prd",
        "triage",
        "zoom-out"
      ],
      "concepts_to_consider": [
        "zoom-out skill (perspective-shift skill we don't have)",
        "grill-with-docs (interrogate library docs before integrating)",
        "diagnose (lightweight bug diagnosis, distinct from full triage)",
        "CONTEXT.md per-skill convention worth watching",
        "structured `<what-to-do>` / `<supporting-info>` skill body pattern (validates our own format)"
      ],
      "sync_policy": "Concept-port only. Already-covered skills (improve-codebase, tdd, triage, prd) don't need re-porting unless his version has a meaningfully different angle. Net-new skills (zoom-out, grill-with-docs, diagnose) are the candidates."
    }
  ],
  "checked_at": "2026-05-04",
  "added_local": [
    "skills/brainstorm",
    "skills/prd",
    "skills/breakdown",
    "skills/spec",
    "skills/groom",
    "skills/start-task",
    "skills/finish-task",
    "skills/code-review",
    "skills/full-review",
    "skills/engineering-context",
    "skills/orchestrate",
    "skills/workspace",
    "skills/improve-codebase",
    "skills/next-task",
    "skills/new-task",
    "skills/estimation",
    "skills/worktree",
    "skills/competitor-analysis",
    "skills/perspective",
    "skills/verify",
    "skills/cleanup",
    "skills/retro",
    "agents/pm",
    "agents/principal",
    "agents/qa",
    "agents/devops",
    "agents/task-manager",
    "agents/wiki-librarian"
  ],
  "dropped": {
    "_note": "Upstream skills/agents we've explicitly chosen not to mirror (yet)",
    "skills": []
  },
  "renames": {},
  "divergence_notes": [
    "Notion integration is heavy: PRD/Spec/Tasks live in Notion Wiki",
    "Two-label severity model (MUST/SUGGEST) with near-term-trigger test",
    "Codex compatibility annotations in skill bodies — superpowers is Claude-Code only",
    "Custom doc model: promoted specs in repo, drafts in wiki",
    "Don't open PRs upstream that restructure skills to our <what-to-do>/<supporting-info> pattern — superpowers' CLAUDE.md explicitly rejects compliance restructures"
  ]
}