Correct the strand/braid lane's implementation status - #326
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WF-0121 claimed status "implemented" and cited four anchor modules. Two of them -- worldline-state.ts and jedit-agent-strand-contract.ts -- were deleted in a05cb42 (2026-07-16, "Refactor: remove local text authority", -50,419 lines), which removed the local simulation the worldline UI was built on. Slices S1-S4 (#154-#157) were closed against that removed implementation, so the closed issues no longer describe the tree either. The commands themselves are not stale and are not being removed: :ttd, :strand and :braid stay in the catalog and are meant to be hooked up. They currently dispatch to dispatchCausalCommandUnavailable, which reports "Echo operation unavailable" rather than pretending to work. "implemented" was not in this repo's status vocabulary (draft|active|landed|superseded) and was the only doc using it. The design still stands, so the lane is active. Records what re-implementation actually needs against the real Echo host: - :ttd is closest. EchoTextHostObserveRequest already accepts a basisHeadId and EchoTextHostObserved already returns resolvedWorldlineTick, so observing an arbitrary point is supported today. The gap is enumeration -- nothing maps a tick back to a head id, so -1 and 1842 cannot be resolved to a basis. - :strand list and :braid view need a topology query. The host port exposes openBuffer, replaceRange, declareCheckpoint and observeWindow; none of them enumerate strands or braids. - :strand new/switch and :braid preview/admit need topology mutation. Echo treats these as WAL-backed intents as of flyingrobots/echo#604, which is closed, so the substrate is available and the remaining work is Jim-side.
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WalkthroughThe design document is marked active. It records removal of the local implementation and agent contract, retained command behavior, and remaining Echo host operations for worldline and topology support. ChangesWorldline UX design status
Estimated code review effort: 1 (Trivial) | ~3 minutes Merge Risk: 🔵 Low · up to The status document may overstate availability of Echo topology support, which could mislead follow-on implementation planning. Clarify the capability as unverified or cite the implemented Echo interface before merging. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@docs/design/0121-strand-braid-worldline-ux.md`:
- Around line 150-153: Revise the topology-mutation statement to cite concrete
Echo intent/receipt definitions and the implementation revision for
flyingrobots/echo#604. If those details cannot be verified, state only that Echo
defines the topology-intent contract and that WAL-backed support plus jedit host
exposure remain unverified.
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docs/design/0121-strand-braid-worldline-ux.md
🔇 Additional comments (2)
docs/design/0121-strand-braid-worldline-ux.md (2)
6-6: LGTM!Also applies to: 10-10
117-149: LGTM!Also applies to: 196-199
Review finding on this PR, and correct. The doc said Echo "treats these as WAL-backed intents ... so the substrate side is available", which inferred a capability from a closed issue's title. Closed is not the same as implemented, and neither is the same as reachable from jedit. Now separated. Verified: flyingrobots/echo#604 was closed as COMPLETED on 2026-06-26, and its stated contract is that topology-changing operations become admitted causal history rather than side-channel runtime state. Not verified from this repo: the concrete intent and receipt definitions in Echo's current tree, and whether jedit's Echo host can reach them. A design doc that overstates a dependency is worse than one that admits the gap, because the overstatement is what someone plans a slice against.
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Valid finding, fixed in You're right that I inferred a capability from a closed issue's title. Closed is not implemented, and implemented is not reachable from jedit — three different claims, and I collapsed them into one. Now separated explicitly in the doc: Verified: flyingrobots/echo#604, "GP6: Treat strand, braid, and suffix topology as WAL-backed intents", closed as COMPLETED on 2026-06-26 ( Not verified from this repo: the concrete intent and receipt definitions in Echo's current tree, and whether jedit's Echo host can reach them. The doc now says to confirm both against Echo before planning against it. This matters more than usual here: the whole point of the PR is to stop a design doc from overstating its own status, so it would be poor form to leave an overstated dependency claim inside the correction. |
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@coderabbitai review |
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Addressed: the doc no longer infers a capability from a closed issue title. It now states separately what is verified (echo#604 closed as COMPLETED on 2026-06-26, and its stated contract) and what is not verified from this repo (the concrete intent/receipt definitions in Echo's tree, and whether jedit's host can reach them). Replied on the PR.
1 participant
Why
WF-0121 claims
status: "implemented"and cites four anchor modules. Two of them —worldline-state.tsandjedit-agent-strand-contract.ts— were deleted ina05cb427(2026-07-16, "Refactor: remove local text authority", −50,419 lines), which removed the local simulation the worldline UI was built on. Slices S1–S4 (#154–#157) were closed against that removed implementation, so the closed issues don't describe the tree either.implementedalso wasn't in this repo's status vocabulary (draft|active|landed|superseded) — it was the only doc using it.The commands are not stale and are not being removed.
:ttd,:strandand:braidstay in the catalog and are meant to be hooked up; they currently dispatch todispatchCausalCommandUnavailable, which reports "Echo operation unavailable" rather than pretending to work.What this records
The gap between the design and the current tree, so the next person doesn't have to rediscover it:
:ttdis closest.EchoTextHostObserveRequestalready accepts abasisHeadIdandEchoTextHostObservedalready returnsresolvedWorldlineTick, so observing an arbitrary point is supported today. The gap is enumeration — nothing maps a tick back to a head id, so-1and1842can't be resolved to a basis. One new host operation.:strand list/:braid viewneed a topology query. The port exposesopenBuffer,replaceRange,declareCheckpoint,observeWindow— none enumerate strands or braids.:strand new/:strand switch/:braid preview/:braid admitneed topology mutation. Echo treats these as WAL-backed intents as of GP6: Treat strand, braid, and suffix topology as WAL-backed intents echo#604, which is closed — the substrate dependency is satisfied, so the remaining work is Jim-side.Docs only; no code change.