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Generic Contract Braid Substrate #476

Description

@flyingrobots

Migrated from Method backlog

This issue was created from a legacy filesystem backlog card. GitHub Issues are now the live work tracker; repository docs remain Method evidence.

Source backlog: docs/method/backlog/up-next/KERNEL_generic-contract-braid-substrate.md
Original lane: up-next
Original legend: KERNEL

Original backlog card

Generic Contract Braid Substrate

Status: planned kernel/runtime implementation.

Depends on:

Why now

jedit needs an ordered projection of edit strands over a file worldline, but
Echo should model that as a generic braid substrate.

What it should look like

A braid records:

  • braid id;
  • baseline worldline/ref;
  • ordered member refs;
  • current projection ref/digest;
  • contract family/schema identity when contract-backed;
  • basis/revalidation posture.

The simple law is sequential: each new member forks from the current projection
frontier unless the caller explicitly requests a different basis.

Acceptance criteria

  • Braid creation is an intent.
  • Braid member append is an intent.
  • Each member has an orderIndex.
  • Each member records source base/ref, source tip/ref, and
    projectionAfterDigest.
  • Braid projection is observable.
  • Braid projection can return complete, residual, plural, obstructed, or
    conflict posture.
  • Settlement/collapse/admission is an intent.

Non-goals

  • Do not add jedit or editor nouns to Echo core.
  • Do not flatten support pins into imports.
  • Do not require full production collaboration policy in the first braid slice.

Activity

  1. coderabbitai commented on Jun 1, 2026

    @coderabbitai
    Contributor
    🔗 Related PRs

    #315 - feat(kernel): strand contract — cycle 0004 [merged]
    #326 - Echo contract hosting roadmap [merged]
    #329 - Stack Witness 0001 fixture-backed jedit walking skeleton [merged]
    #368 - feat(core): connect installed contract intent pipeline [merged]
    #371 - feat(core): advance v0.1 contract evidence and retention [merged]


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  2. added and removed on Jun 1, 2026
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