docs(runtime): close communication ownership

Record J4.1's single Runtime communication/social graph, failure-safe ordered chat stream, complete Release evidence, exact-binary lifecycle/reconnect acceptance, rollback, and the J4.2 inventory transaction boundary. Synchronize architecture, roadmap, milestones, agent guidance, and durable memory.

Co-authored-by: Codex <codex@openai.com>

AGENTS.md

@@ -239,7 +239,13 @@ disposal converge the complete ownership ledger to zero. Runtime tests pass
 146/146, App tests pass 3,765/3 skips, the complete Release suite passes
 8,484/5 skips, and both the exact lifecycle/reconnect and canonical nine-stop
 routes pass with graceful zero-code exits and no failures. J3 is closed; J4
-gameplay-state lifetime groups are active. J0's rollback is
+gameplay-state lifetime groups are active. J4.1 is complete at `c9d25ade`:
+`RuntimeCommunicationState` owns the exact chat transcript, reply/retell
+targets, negotiated rooms, friends, and squelch state; graphical and no-window
+consumers borrow them. Runtime tests pass 152/152, App tests pass 3,765/3
+skips, the complete Release suite passes 8,494/5 skips, and the exact-binary
+seven-checkpoint lifecycle/reconnect gate passes with graceful exits and zero
+failures. J4.2 inventory transaction ownership is active. J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 J1's rollback is
 `git revert 854d9e9cd13092bd5aaa3cf025d73eeb4600e9f8`.
@@ -256,13 +262,16 @@ J3.5's rollback is
 `git revert ce3ac310d92722ffb637e81cb1957458874dd220`.
 J3.6's rollback is
 `git revert 119b7c115107245546180b2f5cb3cb44c7d5476a`.
+J4.1's rollback is
+`git revert c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e`.
 Slice H's retained UI/frame, bounded-light, and pooled/borrowed/direct network
 work is complete; the exact seven-checkpoint connected lifecycle/reconnect gate
 passes. Slice I is closed in
 `docs/plans/2026-07-25-modern-runtime-slice-i.md`; the coherent Slice J campaign
 executes from `docs/plans/2026-07-25-modern-runtime-slice-j.md`; J3.6 closeout
 is `docs/research/2026-07-26-slice-j3-6-lifetime-closeout.md`; J4 executes from
-`docs/plans/2026-07-26-modern-runtime-slice-j4.md`. The exact G4
+`docs/plans/2026-07-26-modern-runtime-slice-j4.md`; J4.1 closeout is
+`docs/research/2026-07-26-slice-j4-1-communication-state.md`. The exact G4
 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:

CLAUDE.md

@@ -237,7 +237,13 @@ disposal converge the complete ownership ledger to zero. Runtime tests pass
 146/146, App tests pass 3,765/3 skips, the complete Release suite passes
 8,484/5 skips, and both the exact lifecycle/reconnect and canonical nine-stop
 routes pass with graceful zero-code exits and no failures. J3 is closed; J4
-gameplay-state lifetime groups are active. J0's rollback is
+gameplay-state lifetime groups are active. J4.1 is complete at `c9d25ade`:
+`RuntimeCommunicationState` owns the exact chat transcript, reply/retell
+targets, negotiated rooms, friends, and squelch state; graphical and no-window
+consumers borrow them. Runtime tests pass 152/152, App tests pass 3,765/3
+skips, the complete Release suite passes 8,494/5 skips, and the exact-binary
+seven-checkpoint lifecycle/reconnect gate passes with graceful exits and zero
+failures. J4.2 inventory transaction ownership is active. J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 J1's rollback is
 `git revert 854d9e9cd13092bd5aaa3cf025d73eeb4600e9f8`.
@@ -254,13 +260,16 @@ J3.5's rollback is
 `git revert ce3ac310d92722ffb637e81cb1957458874dd220`.
 J3.6's rollback is
 `git revert 119b7c115107245546180b2f5cb3cb44c7d5476a`.
+J4.1's rollback is
+`git revert c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e`.
 Slice H's retained UI/frame, bounded-light, and pooled/borrowed/direct network
 work is complete; the exact seven-checkpoint connected lifecycle/reconnect gate
 passes. Slice I is closed in
 `docs/plans/2026-07-25-modern-runtime-slice-i.md`; the coherent Slice J campaign
 executes from `docs/plans/2026-07-25-modern-runtime-slice-j.md`; J3.6 closeout
 is `docs/research/2026-07-26-slice-j3-6-lifetime-closeout.md`; J4 executes from
-`docs/plans/2026-07-26-modern-runtime-slice-j4.md`. The exact G4
+`docs/plans/2026-07-26-modern-runtime-slice-j4.md`; J4.1 closeout is
+`docs/research/2026-07-26-slice-j4-1-communication-state.md`. The exact G4
 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:

docs/architecture/acdream-architecture.md

@@ -217,7 +217,9 @@ src/
       RuntimeEntityObjectViews.cs -> direct allocation-free borrowed views
       InboundPhysicsStateController.cs -> retail timestamp/snapshot authority
       ParentAttachmentState.cs -> generation-exact parent relations
-    -> J3 complete; J4 gameplay-state lifetime groups active
+    Gameplay/
+      RuntimeCommunicationState.cs -> one chat/social owner + ordered stream
+    -> J3 and J4.1 complete; J4.2 inventory transaction ownership active
     -> may reference Core, Core.Net, Content, and Plugin.Abstractions only
     -> must never reference App, UI, Silk.NET, OpenAL, Arch, or ImGui
   

docs/plans/2026-04-11-roadmap.md

@@ -1,6 +1,6 @@
 # acdream — strategic roadmap
 
-**Status:** Living document. Updated 2026-07-26. **M3 landed; M4 is active.** M3's retail casting/UI, R6 locomotion/collision/projectile/teleport/radar rebaseline, deterministic fresh-login/portal world lifecycle, and final two-client portal observer flow are user-gated. All eight slices of the behavior-preserving ownership campaign in [`docs/architecture/code-structure.md`](../architecture/code-structure.md), their automated closeout, and the user's connected visual matrix are complete. Modern Runtime J3's canonical entity/object lifetime is also closed; J4 gameplay-state lifetime groups are active. Issue #225's lifestone/particle alpha comparison remains a separate rendering visual gate.
+**Status:** Living document. Updated 2026-07-26. **M3 landed; M4 is active.** M3's retail casting/UI, R6 locomotion/collision/projectile/teleport/radar rebaseline, deterministic fresh-login/portal world lifecycle, and final two-client portal observer flow are user-gated. All eight slices of the behavior-preserving ownership campaign in [`docs/architecture/code-structure.md`](../architecture/code-structure.md), their automated closeout, and the user's connected visual matrix are complete. Modern Runtime J3's canonical entity/object lifetime and J4.1 communication/social ownership are closed; J4.2 inventory transaction ownership is active. Issue #225's lifestone/particle alpha comparison remains a separate rendering visual gate.
 **Purpose:** One source of truth for where the project is and where it's going. Every observed defect or missing feature has a named phase that owns it; when something looks wrong in-game, look here to find the phase that'll address it. Implementation details live in per-phase specs under `docs/superpowers/specs/`, not in this file.
 
 ---
@@ -1710,8 +1710,13 @@ port in any phase — no separate listing here.
 > every incomplete teardown suffix, and converges the complete reset/disposal
 > ledger to zero. Its 146 Runtime tests, 3,765 App tests / 3 skips, 8,484-test
 > / 5-skip complete Release suite, exact lifecycle/reconnect gate, and
-> canonical nine-stop route pass. J4 gameplay-state lifetime groups are
+> canonical nine-stop route pass. J4.1 is complete at `c9d25ade`: Runtime
-> active.
+> constructs and owns the exact chat transcript, reply/retell targets,
+> negotiated rooms, friends, and squelch state; every graphical and no-window
+> consumer borrows them. Its 152 Runtime tests, 3,765 App tests / 3 skips,
+> 8,494-test / 5-skip complete Release suite, and exact-binary
+> seven-checkpoint lifecycle/reconnect gate pass. J4.2 inventory transaction
+> ownership is active.
 > The historical exact cutover
 > rollback remains
 > `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`. Slice H is complete:

docs/plans/2026-05-12-milestones.md

@@ -187,8 +187,12 @@ residency is `0/0/0` at every stable checkpoint and teardown converges. Slice I
   versions prevent displaced callbacks, and reset/direct disposal converge
   the complete owner ledger to zero. Its 146 Runtime tests, 3,765 App tests /
   3 skips, 8,484 full Release tests / 5 skips, exact lifecycle/reconnect gate,
-  and canonical nine-stop route pass. J4 gameplay-state lifetime groups are
+  and canonical nine-stop route pass. J4.1 is complete at `c9d25ade`:
-  active under
+  Runtime owns one exact chat/social graph and its re-entrant-safe synchronous
+  event stream; all presentation and no-window consumers borrow it. Its 152
+  Runtime tests, 3,765 App tests / 3 skips, 8,494 full Release tests / 5
+  skips, and exact-binary seven-checkpoint lifecycle/reconnect route pass.
+  J4.2 inventory transaction ownership is active under
   [`2026-07-25-modern-runtime-slice-j.md`](2026-07-25-modern-runtime-slice-j.md).
 Slice-I closeout evidence is
 [`../research/2026-07-25-slice-i7-closeout.md`](../research/2026-07-25-slice-i7-closeout.md).

docs/plans/2026-07-24-modern-runtime-architecture.md

@@ -10,8 +10,9 @@ boundary and borrowed contract seam; J2 moved canonical session/transport
 lifetime and ordered inbound routing; J3.1–J3.6 moved canonical entity identity
 and object-table lifetime to Runtime, exact graphical projection identity to
 App, and one ordered canonical entity/object stream plus direct views to all
-hosts and closed the failure-safe owner ledger. J4 gameplay-state lifetime
+hosts and closed the failure-safe owner ledger. J4.1 moved communication and
-groups are the active execution point.
+social ownership into Runtime at `c9d25ade`; J4.2 inventory transaction
+ownership is the active execution point.
 
 **Scope:** Reconcile and sequence the existing Modern Pipeline (`MP`) and
 Linux/headless (`LH`) tracks using the 2026-07-24 connected performance audit.

docs/plans/2026-07-25-modern-runtime-slice-j.md

@@ -1,6 +1,6 @@
 # Modern runtime Slice J — presentation-independent runtime
 
-**Status:** J0–J3 COMPLETE; J4 gameplay-state lifetime groups are active
+**Status:** J0–J3 COMPLETE; J4.1 COMPLETE; J4.2 inventory ownership active
 **Parent:** `2026-07-24-modern-runtime-architecture.md`, Slice J
 **Authorization:** the user approved Slices F–L, including the otherwise-frozen
 Slice J gameplay-owner moves, on 2026-07-24
@@ -229,6 +229,14 @@ match current traces; App has no server-GUID ownership.
 Gate: deterministic command/response traces and graphical ViewModel revisions
 match; no Runtime type references UI abstractions.
 
+J4.1 completed at `c9d25ade`: Runtime now owns the exact chat transcript,
+reply/retell targets, negotiated Turbine rooms, friends, and squelch state.
+Graphical UI, devtools, command routing, plugins/current-runtime projections,
+and no-window consumers borrow that one graph. Its 152 Runtime tests, 3,765
+App tests / 3 skips, 8,494 complete Release tests / 5 skips, and exact-binary
+seven-checkpoint lifecycle/reconnect gate pass. J4.2 inventory transaction
+ownership is active.
+
 Detailed execution begins with a source-ownership inventory. Move one coherent
 lifetime group at a time in this order:
 

docs/plans/2026-07-26-modern-runtime-slice-j4.md

@@ -1,6 +1,6 @@
 # Modern runtime Slice J4 — gameplay-state lifetime groups
 
-**Status:** ACTIVE
+**Status:** J4.1 COMPLETE; J4.2 ACTIVE
 **Parent:** `2026-07-25-modern-runtime-slice-j.md`, J4
 **Production base:** `77c013998b902724d66e487589a4ea18538e1ea6`
 **Authorization:** the user approved Slices F–L, including Slice J gameplay
@@ -17,6 +17,16 @@ UI, devtools, plugins, and the live-session router borrow those exact
 instances. Every moved group retains current synchronous packet/command
 ordering and its existing retail-derived algorithms.
 
+## Execution ledger
+
+| Group | Status | Evidence |
+|---|---|---|
+| J4.1 communication/social | complete | `c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e`; 152 Runtime tests, 3,765 App tests / 3 skips, 8,494 complete Release tests / 5 skips, and `logs/connected-world-gate-20260726-075109/report.json` pass |
+| J4.2 inventory transactions | active | Runtime must borrow J3's exact object table and take ownership of external-container, item-mana, shortcut/component, shared busy, and one-request-at-a-time state |
+| J4.3 magic/player sheet | pending | starts only after J4.2 exact-binary acceptance |
+| J4.4 character projections | pending | starts only after J4.3 acceptance |
+| J4.5 combined cleanup | pending | combined failure, no-window, connected, and nine-stop closeout |
+
 ## Current ownership inventory
 
 The App `GameWindow` currently constructs or roots these
@@ -60,6 +70,8 @@ environment, and portal presentation remain J6.
 
 ### J4.1 — communication and social state
 
+**Completed 2026-07-26 at `c9d25ade`.**
+
 - Add a Runtime owner for `ChatLog`, `TurbineChatState`, `FriendsState`,
   `SquelchState`, and reply/retell command targets.
 - Move reply/retell target tracking out of `ChatVM`; the VM borrows the same
@@ -73,8 +85,19 @@ Gate: incoming/outgoing tell tracking, room negotiation/cookie wrap, friend and
 squelch updates, command routing, clear, reset/reconnect, graphical/direct
 event traces, disposal, and Runtime dependency closure.
 
+Result: `RuntimeCommunicationState` constructs and owns the exact `ChatLog`,
+reply/retell targets, Turbine rooms, friends, and squelch database. Session
+routing, both UI stacks, plugins/current-runtime views, and command routing
+borrow those instances. The canonical chat stream is synchronous,
+failure-isolated, and preserves one monotonic sequence under re-entrant
+callbacks without a frame/background queue. Exact-binary lifecycle/reconnect
+evidence is recorded in
+[`../research/2026-07-26-slice-j4-1-communication-state.md`](../research/2026-07-26-slice-j4-1-communication-state.md).
+
 ### J4.2 — inventory transaction state
 
+**Active.**
+
 - Move `ExternalContainerState`, `ItemManaState`, shortcuts, and desired
   component snapshots into one Runtime owner.
 - Keep the J3 object table as the only item collection and borrow it directly.
@@ -158,3 +181,9 @@ git revert 119b7c115107245546180b2f5cb3cb44c7d5476a
 ```
 
 Do not revert J3 to mask a J4 owner/reset failure.
+
+J4.1 is independently reversible with:
+
+```text
+git revert c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e
+```

docs/research/2026-07-26-slice-j4-1-communication-state.md

@@ -0,0 +1,88 @@
+# Modern runtime J4.1 — communication/social ownership
+
+**Status:** COMPLETE
+**Production commit:** `c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e`
+**Parent plan:** `../plans/2026-07-26-modern-runtime-slice-j4.md`
+
+## Result
+
+`RuntimeCommunicationState` is the single presentation-independent owner for
+the live chat transcript, reply/retell command targets, negotiated Turbine
+rooms and context cookies, friends, and squelch database.
+
+The live-session router, client commands, retained retail UI, developer tools,
+current-runtime/plugin boundary, and future no-window hosts borrow those exact
+instances. `GameWindow` retains read-only compatibility aliases only; it no
+longer constructs a communication or social state object.
+
+Reply/retell tracking moved out of `ChatVM`. A ViewModel may construct a
+private tracker for isolated UI tests, while production ViewModels borrow the
+Runtime tracker. Disposing one borrowed ViewModel cannot detach or reset the
+shared command state.
+
+The Runtime chat stream subscribes once to the canonical `ChatLog`, assigns a
+monotonic commit sequence, and dispatches synchronously. Its retained in-call
+drain prevents a re-entrant callback from delivering a later entry to one
+observer before an earlier entry. Observer exceptions are recorded and do not
+starve later observers or roll back the committed transcript. No async queue,
+polling mirror, or extra frame was introduced.
+
+Session reset preserves visible transcript history while independently
+clearing reply/retell targets, local speaker identity and dedupe state,
+negotiated rooms/cookie sequence, friends, and squelch state in the existing
+retail-derived reset order.
+
+## Automated evidence
+
+- Runtime suite: 152 passed.
+- App suite: 3,765 passed / 3 established skips.
+- UI abstractions: 545 passed.
+- Core: 3,294 passed / 2 established skips.
+- Core.Net: 600 passed.
+- Complete Release solution: 8,494 passed / 5 established skips.
+- Release build: pass, zero errors. A clean rebuild reports 17 pre-existing
+  Core-test warnings; the J4.1 diff introduces none.
+- `git diff --check`: pass.
+
+The focused matrix covers incoming/outgoing tells, shared ViewModel borrowing,
+reset without transcript loss, duplicate subscription rejection, callback
+re-entrancy, observer failure isolation, direct/idempotent disposal, two
+independent Runtime instances, current-runtime event forwarding, UI
+composition, and shutdown ordering.
+
+## Exact-binary connected evidence
+
+`logs/connected-world-gate-20260726-075109/report.json` passed on exact source
+and embedded binary commit
+`c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e`:
+
+- six capped checkpoints through login, outdoor/dungeon/facility travel and
+  revisit plus one fresh-process uncapped reconnect checkpoint;
+- 245.687-second capped route and 61.638-second reconnect route;
+- both sessions exited gracefully with code zero;
+- zero failures, render-shadow mismatches, pending render deltas, or stranded
+  owner work.
+
+Its only warning is the established set of 25 expected world-edge landblock
+misses.
+
+## Retail and divergence audit
+
+J4.1 changes ownership, observation, and teardown only. Existing retail-derived
+chat parsing, formatting, channel cookies, friend updates, squelch rules, and
+session-reset semantics are unchanged. No divergence row was added or retired.
+
+## Rollback
+
+```text
+git revert c9d25ade50c0a5c4f7db5b6cca680e01e35cc18e
+```
+
+Do not revert J3 to mask a later gameplay-state ownership failure.
+
+## Next boundary
+
+J4.2 moves the external-container, item-mana, shortcut/component, shared busy,
+and one-inventory-request-at-a-time owners into Runtime while borrowing J3's
+exact `ClientObjectTable`. Retained drag/drop projections, icons, cursors,
+selection, and panel state stay in App/UI.