Commit Graph

2 Commits

Author SHA1 Message Date
Alexander Brown
162908a421 docs: ECS pattern survey appendix + PromotionStore cleanup (#12580)
## Summary

Add the ECS pattern survey appendix to ADR 0008's companion-documents
table, and drop stale `PromotionStore` references across architecture
docs to reflect the ADR 0009 removal.

## Changes

- **What**:
- New `docs/architecture/appendix-ecs-pattern-survey.md` — surveys
bitECS, miniplex, koota, ECSY, Bevy, and Thyseus: patterns adopted,
departed from, and when to revisit.
  - ADR 0008 companion table gains a row pointing at the new appendix.
- `docs/adr/0009-…/before-after-flows.md`,
`docs/architecture/ecs-target-architecture.md`,
`docs/architecture/entity-problems.md` — drop references to
`PromotionStore` / `usePromotionStore` (the legacy three-layer mechanism
is gone; promoted value widgets are now linked `SubgraphInput`s).
- `docs/architecture/subgraph-boundaries-and-promotion.md` — reframes
its "current mechanism" section as historical context with an explicit
"removed by ADR 0009" callout.
- **Breaking**: None — docs-only.

## Review Focus

Wording in the historical-context callout on
`subgraph-boundaries-and-promotion.md`. Everything else is a small
cleanup or a new standalone document.

---------

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: GitHub Action <action@github.com>
2026-06-02 00:25:34 -07:00
Alexander Brown
3e197b5c57 docs: ADR 0008 — Entity Component System (#10420)
## Summary

Architecture documentation proposing an Entity Component System for the
litegraph layer.

```mermaid
graph LR
    subgraph Today["Today: Spaghetti"]
        God["🍝 God Objects"]
        Circ["🔄 Circular Deps"]
        Mut["💥 Render Mutations"]
    end

    subgraph Tomorrow["Tomorrow: ECS"]
        ID["🏷️ Branded IDs"]
        Comp["📦 Components"]
        Sys["⚙️ Systems"]
        World["🌍 World"]
    end

    God -->|"decompose"| Comp
    Circ -->|"flatten"| ID
    Mut -->|"separate"| Sys
    Comp --> World
    ID --> World
    Sys -->|"query"| World
```

## Changes

- **What**: ADR 0008 + 4 architecture docs (no code changes)
- `docs/adr/0008-entity-component-system.md` — entity taxonomy, branded
IDs, component decomposition, migration strategy
- `docs/architecture/entity-interactions.md` — as-is Mermaid diagrams of
all entity relationships
- `docs/architecture/entity-problems.md` — structural problems with
file:line evidence
- `docs/architecture/ecs-target-architecture.md` — target architecture
diagrams
- `docs/architecture/proto-ecs-stores.md` — analysis of existing Pinia
stores as proto-ECS patterns

## Review Focus

- Does the entity taxonomy (Node, Link, Subgraph, Widget, Slot, Reroute,
Group) cover all cases?
- Are the component decompositions reasonable starting points?
- Is the migration strategy (bridge layer, incremental extraction)
feasible?
- Are there entity interactions or problems we missed?

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10420-docs-ADR-0008-Entity-Component-System-32d6d73d365081feb048d16a5231d350)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: Christian Byrne <cbyrne@comfy.org>
2026-03-26 16:14:44 -07:00