#18 · assess · charter — the evaluator waits

1. 102The engine takes #18ENGINE.CURSOR · propagate

   a wave is settlingengine: working on #18membrane: waiting at #15

   1. #0a listener
   2. #1a doer
   3. #2listener: the charter
   4. #3doer: the author
   5. #4listener: charter seen
   6. #5listener: blueprint seen
   7. #6doer: the planner
   8. #7listener: assess · charter
   9. #8listener: assess · result
   10. #9doer: the evaluator
   11. #10the charter wanted
   12. #11the blueprint
   13. #12readiness
   14. #13readiness
   15. #14a request: a charter
   16. #15the charter proposedmembrane
   17. #16the charter defined
   18. #17readiness
   19. #18readinessengine · working
   20. #19a request: a Cell
   21. ·end of the log

   What	before		after
   pointer — the next record to take	#18	→	#19

   The engine moves on to #18 — assess · charter's readiness, for the evaluator.

   Where it happens takeNextTuple()Vol. 02 §4.1

   The engine's step: take the record under its pointer and move the pointer on — or stop, if the pointer has reached the end.

   Specification

   Vol. 02 §4.1

   Code

   takeNextTuple() in core/registers/take-next-tuple.ts, line 15: at the end of the log, the engine stops

   Journal

   #18 · ENGINE.CURSOR · propagate · offset: 18 · by engine

   Picture

   pointer — the next record to take: #18 → #19

   1. 1// ENGINE.CURSOR advance (Vol. 02 §4.1) — the machine's instruction pointer:
   2. 2// returns the tuple at the cursor and moves it forward exactly once, or null
   3. 3// at quiescence. Advancing IS the context switch: the ambient wave context
   4. 4// moves to the propagated tuple in the same movement, so every transition
   5. 5// journalled during its propagation is attributed to it — the cube's spine.
   6. 6// The cursor never rewinds.
   7. 7
   8. 8import type { WaveTuple } from "../wave/gate";
   9. 9import type { RegisterFile } from "./register-file";
   10. 10import { recordTransition } from "./record-transition";
   11. 11import { setDriver, setWaveContext } from "./set-wave-context";
   12. 12
   13. 13export function takeNextTuple(file: RegisterFile): WaveTuple | null {
   14. 14 const engine = file.registers.engine;
   15. 15 if (engine.cursor >= engine.base + engine.window.length) return null;↑ at the end of the log, the engine stops
   16. 16 const tuple = engine.window[engine.cursor - engine.base];
   17. 17 engine.cursor += 1;↑ the engine's pointer moves on by one
   18. 18 setWaveContext(file, { offset: tuple.offset, phase: "propagate" });
   19. 19 setDriver(file, "engine");
   20. 20 recordTransition(file, "engine", "ENGINE.CURSOR", "propagate", { offset: tuple.offset });↑ the change is written into the journal
   21. 21 return tuple;
   22. 22}

   AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

   Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in 6730f58 (2026-09-13)

2. 103The evaluator opens its rendezvousRDV · open-bank

   a wave is settlingengine: working on #18membrane: waiting at #15

   1. #0a listener
   2. #1a doer
   3. #2listener: the charter
   4. #3doer: the author
   5. #4listener: charter seen
   6. #5listener: blueprint seen
   7. #6doer: the planner
   8. #7listener: assess · charter
   9. #8listener: assess · result
   10. #9doer: the evaluator
   11. #10the charter wanted
   12. #11the blueprint
   13. #12readiness
   14. #13readiness
   15. #14a request: a charter
   16. #15the charter proposedmembrane
   17. #16the charter defined
   18. #17readiness
   19. #18readinessengine · working
   20. #19a request: a Cell
   21. ·end of the log

   What	before		after
   rendezvous opened	admit.note.gate--l1.seeking.charter.author, admit.note.gate--l1.seeking.planner	→	admit.note.gate--l1.seeking.charter.author, admit.note.gate--l1.seeking.planner, admit.note.gate--l1.seeking.evaluator

   The evaluator acts on assess · charter, so this readiness wakes it for the first time: it opens its rendezvous.

   Where it happens ensureRendezvous()Vol. 02 §4.5 · Vol. 06 §4.5

   Opens a doer's rendezvous the first time it is woken, and a lane in it for each new key.

   Specification

   Vol. 02 §4.5 · Vol. 06 §4.5

   Code

   ensureRendezvous() in core/registers/ensure-rendezvous.ts, line 13: a rendezvous for this doer

   Journal

   #18 · RDV · open-bank · bindId: admit.note.gate--l1.seeking.evaluator · by bind:admit.note.gate--l1.seeking.evaluator

   Picture

   rendezvous opened: admit.note.gate--l1.seeking.charter.author, admit.note.gate--l1.seeking.planner → admit.note.gate--l1.seeking.charter.author, admit.note.gate--l1.seeking.planner, admit.note.gate--l1.seeking.evaluator

   1. 1// RDV lane access (Vol. 02 §4.5): one rendezvous state per key lane, created
   2. 2// lazily on the first readiness that reaches the bind — activated at birth
   3. 3// when the bind declares no `on` (a demands-only bind, Vol. 06 §4.5).
   4. 4// Creation is a transition; an existing lane passes through as a read.
   5. 5
   6. 6import type { BindHandle, RendezvousLane, RendezvousRegisters } from "./topology-registers";
   7. 7import { recordTransition } from "./record-transition";
   8. 8
   9. 9export function ensureRendezvous(bind: BindHandle, key: string | null, activatedAtBirth: boolean): RendezvousLane {
   10. 10 let bank: RendezvousRegisters | undefined = bind.region.rdv.get(bind.bindId);
   11. 11 if (!bank) {
   12. 12 bank = { lanes: new Map(), intentCtr: 0 };
   13. 13 bind.region.rdv.set(bind.bindId, bank);↑ a rendezvous for this doer
   14. 14 // A new bank changes the REGION's RDV register set (Vol. 02 §4.5) — the
   15. 15 // region station journals it, so its document (rdvOrder) folds true
   16. 16 // (the fold oracle, ADR-004 d11).
   17. 17 recordTransition(bind.file, `topology:${bind.region.regionId}`, "RDV", "open-bank", { bindId: bind.bindId });↑ the change is written into the journal
   18. 18 }
   19. 19 let lane = bank.lanes.get(key);
   20. 20 if (!lane) {
   21. 21 lane = { activated: activatedAtBirth, scope: new Map(), projected: false };
   22. 22 bank.lanes.set(key, lane);↑ a lane for this key
   23. 23 recordTransition(bind.file, `topology:${bind.region.regionId}/bind:${bind.bindId}`, "RDV", "open-lane", {↑ the change is written into the journal
   24. 24 key,
   25. 25 activatedAtBirth
   26. 26 });
   27. 27 }
   28. 28 return lane;
   29. 29}

   AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

   Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in 3530f2c (2026-09-07)

3. 104A lane, active from birthRDV · open-lane

   a wave is settlingengine: working on #18membrane: waiting at #15

   1. #0a listener
   2. #1a doer
   3. #2listener: the charter
   4. #3doer: the author
   5. #4listener: charter seen
   6. #5listener: blueprint seen
   7. #6doer: the planner
   8. #7listener: assess · charter
   9. #8listener: assess · result
   10. #9doer: the evaluator
   11. #10the charter wanted
   12. #11the blueprint
   13. #12readiness
   14. #13readiness
   15. #14a request: a charter
   16. #15the charter proposedmembrane
   17. #16the charter defined
   18. #17readiness
   19. #18readinessengine · working
   20. #19a request: a Cell
   21. ·end of the log

   What	before		after
   lane · this session	—	→	open
   lane · this session · active	—	→	yes
   lane · this session · has acted	—	→	no
   intentions named so far	—	→	0

   Its lane for this session is born active, because the readiness that opened it is the one the evaluator acts on — the mirror of the planner at #13.

   Where it happens ensureRendezvous()Vol. 02 §4.5 · Vol. 06 §4.5

   Opens a doer's rendezvous the first time it is woken, and a lane in it for each new key.

   Specification

   Vol. 02 §4.5 · Vol. 06 §4.5

   Code

   ensureRendezvous() in core/registers/ensure-rendezvous.ts, line 13: a rendezvous for this doer

   Journal

   #18 · RDV · open-lane · key: fragment-one-cell, activatedAtBirth: true · by bind:admit.note.gate--l1.seeking.evaluator

   Picture

   lane · this session: — → open

   1. 1// RDV lane access (Vol. 02 §4.5): one rendezvous state per key lane, created
   2. 2// lazily on the first readiness that reaches the bind — activated at birth
   3. 3// when the bind declares no `on` (a demands-only bind, Vol. 06 §4.5).
   4. 4// Creation is a transition; an existing lane passes through as a read.
   5. 5
   6. 6import type { BindHandle, RendezvousLane, RendezvousRegisters } from "./topology-registers";
   7. 7import { recordTransition } from "./record-transition";
   8. 8
   9. 9export function ensureRendezvous(bind: BindHandle, key: string | null, activatedAtBirth: boolean): RendezvousLane {
   10. 10 let bank: RendezvousRegisters | undefined = bind.region.rdv.get(bind.bindId);
   11. 11 if (!bank) {
   12. 12 bank = { lanes: new Map(), intentCtr: 0 };
   13. 13 bind.region.rdv.set(bind.bindId, bank);↑ a rendezvous for this doer
   14. 14 // A new bank changes the REGION's RDV register set (Vol. 02 §4.5) — the
   15. 15 // region station journals it, so its document (rdvOrder) folds true
   16. 16 // (the fold oracle, ADR-004 d11).
   17. 17 recordTransition(bind.file, `topology:${bind.region.regionId}`, "RDV", "open-bank", { bindId: bind.bindId });↑ the change is written into the journal
   18. 18 }
   19. 19 let lane = bank.lanes.get(key);
   20. 20 if (!lane) {
   21. 21 lane = { activated: activatedAtBirth, scope: new Map(), projected: false };
   22. 22 bank.lanes.set(key, lane);↑ a lane for this key
   23. 23 recordTransition(bind.file, `topology:${bind.region.regionId}/bind:${bind.bindId}`, "RDV", "open-lane", {↑ the change is written into the journal
   24. 24 key,
   25. 25 activatedAtBirth
   26. 26 });
   27. 27 }
   28. 28 return lane;
   29. 29}

   AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

   Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in 3530f2c (2026-09-07)

4. 105The charter is gatheredRDV.SCOPE · latch-scope

   a wave is settlingengine: working on #18membrane: waiting at #15

   1. #0a listener
   2. #1a doer
   3. #2listener: the charter
   4. #3doer: the author
   5. #4listener: charter seen
   6. #5listener: blueprint seen
   7. #6doer: the planner
   8. #7listener: assess · charter
   9. #8listener: assess · result
   10. #9doer: the evaluator
   11. #10the charter wanted
   12. #11the blueprint
   13. #12readiness
   14. #13readiness
   15. #14a request: a charter
   16. #15the charter proposedmembrane
   17. #16the charter defined
   18. #17readiness
   19. #18readinessengine · working
   20. #19a request: a Cell
   21. ·end of the log

   What	before		after
   lane · this session · gathered charter	—	→	definition = {"ref":"charter@15","digest":"sha256:d697d7f3224e3a44a0888949eb98ee5ecf54aa09b2fc4aba2addca763458ec1b","value":{"title":"Seeking","purpose":"What are we seeking to understand, and for whom does it matter?","question":"What is a Cell, and why does the machine open one instead of answering in place?","criteria":[{"id":"q1","question":"What is this material about, and what exactly are we seeking to understand in it?","weight":1,"minimum":0.6},{"id":"q2","question":"Whose problem does it address, and why does it exist?","weight":1,"minimum":0.6}]}}

   The charter enters the evaluator's scope as charter. The evaluator now waits for assess · result, which will speak when the Cell has a result.

   Where it happens latchRendezvousScope()Vol. 02 §4.5 · Vol. 06 §4

   Gathers what a listener understood into the doer's scope — and, from the listener the doer acts on, activates the lane.

   Specification

   Vol. 02 §4.5 · Vol. 06 §4

   Code

   latchRendezvousScope() in core/registers/latch-rendezvous-scope.ts, line 17: the lane is activated

   Journal

   #18 · RDV.SCOPE · latch-scope · key: fragment-one-cell, as: charter · by bind:admit.note.gate--l1.seeking.evaluator

   Picture

   lane · this session · gathered charter: — → definition = {"ref":"charter@15","digest":"sha256:d697d7f3224e3a44a0888949eb98ee5ecf54aa09b2fc4aba2addca763458ec1b","value":{"title":"Seeking","purpose":"What are we seeking to understand, and for whom does it matter?","question":"What is a Cell, and why does the machine open one instead of answering in place?","criteria":[{"id":"q1","question":"What is this material about, and what exactly are we seeking to understand in it?","weight":1,"minimum":0.6},{"id":"q2","question":"Whose problem does it address, and why does it exist?","weight":1,"minimum":0.6}]}}

   1. 1// RDV scope latch (Vol. 02 §4.5, Vol. 06 §4): a readiness understanding
   2. 2// enters the bound scope under its declared name — a later readiness of the
   3. 3// same demand refreshes its entry until projection (the latching barrier).
   4. 4// Activation readiness additionally opens the lane (ACTIVATED).
   5. 5
   6. 6import type { BindHandle, RendezvousLane } from "./topology-registers";
   7. 7import { recordTransition } from "./record-transition";
   8. 8
   9. 9export function latchRendezvousScope(
   10. 10 bind: BindHandle,
   11. 11 lane: RendezvousLane,
   12. 12 key: string | null,
   13. 13 as: string,
   14. 14 understanding: unknown,
   15. 15 options: { activates: boolean }
   16. 16): void {
   17. 17 if (options.activates) lane.activated = true;↑ the lane is activated
   18. 18 lane.scope.set(as, understanding);↑ the understanding is gathered
   19. 19 recordTransition(↑ the change is written into the journal
   20. 20 bind.file,
   21. 21 `topology:${bind.region.regionId}/bind:${bind.bindId}`,
   22. 22 options.activates ? "RDV.ACTIVATED,RDV.SCOPE" : "RDV.SCOPE",
   23. 23 "latch-scope",
   24. 24 { key, as }
   25. 25 );
   26. 26}

   AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

   Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in f36e70d (2026-08-18)

when the membrane passed #18

1. 111The membrane passes #18MEMBRANE.CURSOR · sweep

   a wave is settlingengine: at the endmembrane: passing #18

   1. #0a listener
   2. #1a doer
   3. #2listener: the charter
   4. #3doer: the author
   5. #4listener: charter seen
   6. #5listener: blueprint seen
   7. #6doer: the planner
   8. #7listener: assess · charter
   9. #8listener: assess · result
   10. #9doer: the evaluator
   11. #10the charter wanted
   12. #11the blueprint
   13. #12readiness
   14. #13readiness
   15. #14a request: a charter
   16. #15the charter proposed
   17. #16the charter defined
   18. #17readiness
   19. #18readinessmembrane · passing
   20. #19a request: a Cell
   21. ·end of the logengine

   What	before		after
   pointer — the next record to pass	#18	→	#19

   #18 asks nothing of the world, so the membrane's pointer simply moves on.

   Where it happens sweepNextTuple()Vol. 02 §4.6 · Vol. 07 §3

   The membrane's step: pass over the record under its pointer and move the pointer on — exactly once per record.

   Specification

   Vol. 02 §4.6 · Vol. 07 §3

   Code

   sweepNextTuple() in core/registers/sweep-next-tuple.ts, line 16: the membrane's pointer moves on by one

   Journal

   #18 · MEMBRANE.CURSOR · sweep · offset: 18 · by membrane

   Picture

   pointer — the next record to pass: #18 → #19

   1. 1// MEMBRANE.CURSOR advance (Vol. 02 §4.6, Vol. 07 §3): the membrane's own
   2. 2// reading of the one log — the second reception of one publication, never a
   3. 3// second truth. The cursor advances exactly once per offset per machine:
   4. 4// the exactly-once discharge guarantee lives in this movement.
   5. 5
   6. 6import type { WaveTuple } from "../wave/gate";
   7. 7import type { RegisterFile } from "./register-file";
   8. 8import { recordTransition } from "./record-transition";
   9. 9import { setDriver, setWaveContext } from "./set-wave-context";
   10. 10
   11. 11export function sweepNextTuple(file: RegisterFile): WaveTuple | null {
   12. 12 const engine = file.registers.engine;
   13. 13 const membrane = file.registers.membrane;
   14. 14 if (membrane.cursor >= engine.base + engine.window.length) return null;
   15. 15 const tuple = engine.window[membrane.cursor - engine.base];
   16. 16 membrane.cursor += 1;↑ the membrane's pointer moves on by one
   17. 17 setWaveContext(file, { offset: tuple.offset, phase: "sweep" });
   18. 18 setDriver(file, "membrane");
   19. 19 recordTransition(file, "membrane", "MEMBRANE.CURSOR", "sweep", { offset: tuple.offset });↑ the change is written into the journal
   20. 20 return tuple;
   21. 21}

   AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

   Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in 6730f58 (2026-09-13)