Plate Compound Engineering Tree

This is the Plate-specific reduction of the Compound Engineering agent tree.

It is grounded in:

• skiller-lock.json for what Plate actually installed from EveryInc/compound-engineering-plugin
• .agents/rules/task.mdc for the default task lane
• .agents/rules/major-task.mdc for the heavyweight architecture/comparison lane
• .agents/rules/agent-browser-issue.mdc for the browser parity escalation
• .agents/AGENTS.md for explicit exclusions

This is not the whole plugin zoo. It is the slice Plate actually keeps, where it is wired, and why the rest stays dead.

Actual Plate Tree

Plate CE set
├── task lane
│   ├── ce:brainstorm
│   ├── learnings-researcher
│   ├── framework-docs-researcher (conditional, second-pass only)
│   ├── risky-change review lane
│   │   ├── ce-review
│   │   ├── correctness-reviewer
│   │   ├── maintainability-reviewer
│   │   ├── project-standards-reviewer
│   │   └── code-simplicity-reviewer
│   └── agent-native parity lane
│       └── agent-native-reviewer
├── major-task lane
│   ├── ce:plan
│   ├── learnings-researcher
│   ├── repo-research-analyst
│   ├── architecture-strategist
│   ├── pattern-recognition-specialist
│   ├── framework-docs-researcher (conditional, after local clone/source pass)
│   ├── best-practices-researcher (conditional)
│   ├── performance-oracle
│   ├── spec-flow-analyzer
│   └── issue-intelligence-analyst / git-history-analyzer (conditional)
└── major-task conditional document-review pass
    ├── coherence-reviewer
    ├── feasibility-reviewer
    ├── scope-guardian-reviewer
    ├── product-lens-reviewer
    └── adversarial-document-reviewer

Installed CE Agents

Research

• best-practices-researcher
• framework-docs-researcher
• git-history-analyzer
• issue-intelligence-analyst
• learnings-researcher
• repo-research-analyst

Review

• agent-native-reviewer
• architecture-strategist
• code-simplicity-reviewer
• correctness-reviewer
• maintainability-reviewer
• pattern-recognition-specialist
• performance-oracle
• project-standards-reviewer

Workflow

• spec-flow-analyzer

Document Review

• adversarial-document-reviewer
• coherence-reviewer
• feasibility-reviewer
• product-lens-reviewer
• scope-guardian-reviewer

Where Plate Uses Them

task.mdc

Direct CE references in .agents/rules/task.mdc:

• ce:brainstorm Use when the task is still mushy after reading the source of truth and nearby code.
• learnings-researcher Default early pass for repeated domains, prior solutions, and non-trivial work.
• framework-docs-researcher Conditional only. Use after the AGENTS-required local clone/source/docs pass when third-party behavior is still unclear, unfamiliar, or version-sensitive.
• ce-review
• correctness-reviewer
• maintainability-reviewer
• project-standards-reviewer
• code-simplicity-reviewer This is the risky-change review lane. It is not default. It is reserved for risky, large, user-facing, or architecture-sensitive work.
• agent-native-reviewer Separate conditional lane. Use only for .agents/**, .claude/**, AI/tooling surfaces, commands, or user-action parity work.

Companion rule outside the CE tree:

• .agents/rules/agent-browser-issue.mdc If browser/tool automation exposes a reusable action-parity gap, it tells the task flow to load agent-native-reviewer and capture that gap as a real follow-up instead of shrugging.

What task does not do:

• It does not default to the full CE review zoo.
• It does not default to document-review personas.
• It does not default to architecture research unless intake escalates to major-task.

major-task.mdc

Direct CE references in .agents/rules/major-task.mdc:

• ce:plan Main planning spine for heavyweight work.
• learnings-researcher Early repo-memory pass when prior decisions matter.
• repo-research-analyst Default repo-grounding helper for major work.
• architecture-strategist Public API, layering, ownership, abstraction cleanup, and cross-package refactor work.
• pattern-recognition-specialist Repo-wide pattern extraction, repeated smell detection, and consistency analysis across packages.
• framework-docs-researcher Conditional second pass only. Local clone and source reading come first per AGENTS. This comes in when official docs are needed to settle third-party behavior or compare competing frameworks honestly.
• best-practices-researcher Only when official docs still leave gaps or the task genuinely needs wider field patterns.
• performance-oracle Explicit performance and optimization lane. Used for benchmark design, scalability analysis, hot-path tradeoffs, and editor/runtime comparison strategy.
• spec-flow-analyzer RFC, proposal, acceptance-criteria, rollout, and completeness pressure-testing.
• issue-intelligence-analyst or git-history-analyzer Conditional only when issue churn, historical regressions, or design history matter.

major-task also points editor-framework analysis at:

• docs/analysis/editor-architecture-candidates.md

That keeps comparison work bounded instead of widening into random framework tourism.

major-task document-review pass

These are no longer manual-only. They are conditionally wired into major-task:

• coherence-reviewer
• feasibility-reviewer Default pair for explicit plan, RFC, proposal, or spec review.
• scope-guardian-reviewer Add when abstraction count, rollout shape, or scope drift smells inflated.
• product-lens-reviewer Add when the document makes product framing, value, roadmap, or "are we solving the right problem?" claims.
• adversarial-document-reviewer Add when the doc is large, assumption-heavy, architecture-heavy, or high-stakes enough to deserve premise stress-testing.

The rule is selective. major-task does not load every reviewer just because a doc exists.

major-task performance and comparison lane

This is the sharpest major-task branch for Plate-specific framework work:

• define the workload first
• separate measured evidence from hypothesis
• compare equivalent workloads, not vibes
• start from repo constraints before internet takes
• for editor-framework performance questions:
  • prefer Plate vs Slate first for direct inheritance pressure
  • use ProseMirror and Lexical for deeper runtime or architecture direction
  • use Tiptap more for product-layer or packaging cost than raw engine performance
  • use Pretext and Premirror for pagination, composition, and layout-aware editing questions

Rejected Or Deferred

Wrong repo shape

• data-integrity-guardian
• data-migration-expert
• data-migrations-reviewer
• schema-drift-detector
• deployment-verification-agent
• api-contract-reviewer

Reason:

• Plate is a framework/editor monorepo, not a migration-heavy or deploy-heavy product app.
• These agents bias toward data-plane or operational concerns that are not central here.

Wrong stack

• dhh-rails-reviewer
• kieran-rails-reviewer
• kieran-python-reviewer

Reason:

• Wrong language family.
• Installing them would just add noise and fake sophistication.

Workflow noise

• previous-comments-reviewer
• pr-comment-resolver
• figma-design-sync
• bug-reproduction-validator

Reason:

• PR-thread replay, Figma sync, and extra browser-validator choreography are not part of Plate's default execution model.
• Plate already has its own task, review, and browser flows.

Overkill for default Plate use

• security-lens-reviewer
• design-lens-reviewer
• security-reviewer
• security-sentinel
• reliability-reviewer
• performance-reviewer
• adversarial-reviewer
• julik-frontend-races-reviewer
• kieran-typescript-reviewer

Reason:

• Some are legit, but not legit enough to justify default install.
• Plate wanted a lean set that earns its keep.
• Add one later on proof, not because the catalog exists.

Orphan / not first-class yet

• design-implementation-reviewer
• ankane-readme-writer
• cli-agent-readiness-reviewer

Reason:

• No strong first-class parent skill in the current CE tree.
• Not worth pulling into Plate just because they are lying around.

Why This Shape

Plate wanted two modes:

1. task stays lean for normal issue execution.
2. major-task handles architecture, comparison, benchmark, and proposal work without turning every task into a research circus.

That means:

• keep a small serious research spine
• keep a small serious risky-change review spine
• wire document-review agents conditionally behind major-task
• keep performance/comparison work explicit and evidence-first
• reject data/deploy/Rails/Figma/PR-thread sludge

That is the current best-fit CE slice for Plate.