docs(runtime): close interaction transaction ownership

Record the exact J5.2 owner boundary, retail ordering, Release and connected evidence, rollback, and J5.3 handoff across architecture, roadmap, milestones, agent instructions, and durable memory.

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

AGENTS.md

@@ -275,8 +275,14 @@ routing, typed commands/views, and shutdown borrow its children, while the App
 interaction-state class and private controller fallback are deleted. Runtime
 tests pass 182/182, App tests pass 3,779/3 skips, the complete Release suite
 passes 8,550/5 skips, and the exact-binary seven-checkpoint
-lifecycle/reconnect gate passes with graceful exits and zero failures. J5.2
+lifecycle/reconnect gate passes with graceful exits and zero failures. J5.2 is
-interaction-transaction ownership is active.
+complete at `f5f7b417`: `RuntimeActionState.Transactions` owns the strict use
+gate, exact use/appraisal identity, typed interaction FIFO, and exact
+post-arrival pickup token while borrowing J4's sole inventory busy/request
+gate. App retains picking, movement/transport, and presentation only. Runtime
+tests pass 197/197, App tests pass 3,775/3 skips, the complete Release suite
+passes 8,561/5 skips, and the exact-binary seven-checkpoint gate passes with
+graceful exits and zero failures. J5.3 combat/magic-intent ownership is active.
 J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 J1's rollback is
@@ -306,6 +312,8 @@ J4.5's rollback is
 `git revert 89e6b207f81946b40c38c8dc6597817ad99fc6e0`.
 J5.1's rollback is
 `git revert b298f99f913249d299796e6a71f7a9b6b283ac1a`.
+J5.2's rollback is
+`git revert f5f7b4177f449ebcad9724bfea263ef73ab60255`.
 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
@@ -319,7 +327,8 @@ is `docs/research/2026-07-26-slice-j3-6-lifetime-closeout.md`; J4 executes from
 `docs/research/2026-07-26-slice-j4-4-character-projections.md`; J4.5 closeout
 is `docs/research/2026-07-26-slice-j4-5-gameplay-state-closeout.md`; J5.1
 closeout is
-`docs/research/2026-07-26-slice-j5-1-canonical-action-state.md`. The exact G4
+`docs/research/2026-07-26-slice-j5-1-canonical-action-state.md`; J5.2 closeout
+is `docs/research/2026-07-26-slice-j5-2-interaction-transactions.md`. The exact G4
 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:

CLAUDE.md

@@ -273,8 +273,14 @@ routing, typed commands/views, and shutdown borrow its children, while the App
 interaction-state class and private controller fallback are deleted. Runtime
 tests pass 182/182, App tests pass 3,779/3 skips, the complete Release suite
 passes 8,550/5 skips, and the exact-binary seven-checkpoint
-lifecycle/reconnect gate passes with graceful exits and zero failures. J5.2
+lifecycle/reconnect gate passes with graceful exits and zero failures. J5.2 is
-interaction-transaction ownership is active.
+complete at `f5f7b417`: `RuntimeActionState.Transactions` owns the strict use
+gate, exact use/appraisal identity, typed interaction FIFO, and exact
+post-arrival pickup token while borrowing J4's sole inventory busy/request
+gate. App retains picking, movement/transport, and presentation only. Runtime
+tests pass 197/197, App tests pass 3,775/3 skips, the complete Release suite
+passes 8,561/5 skips, and the exact-binary seven-checkpoint gate passes with
+graceful exits and zero failures. J5.3 combat/magic-intent ownership is active.
 J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 J1's rollback is
@@ -304,6 +310,8 @@ J4.5's rollback is
 `git revert 89e6b207f81946b40c38c8dc6597817ad99fc6e0`.
 J5.1's rollback is
 `git revert b298f99f913249d299796e6a71f7a9b6b283ac1a`.
+J5.2's rollback is
+`git revert f5f7b4177f449ebcad9724bfea263ef73ab60255`.
 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
@@ -317,7 +325,8 @@ is `docs/research/2026-07-26-slice-j3-6-lifetime-closeout.md`; J4 executes from
 `docs/research/2026-07-26-slice-j4-4-character-projections.md`; J4.5 closeout
 is `docs/research/2026-07-26-slice-j4-5-gameplay-state-closeout.md`; J5.1
 closeout is
-`docs/research/2026-07-26-slice-j5-1-canonical-action-state.md`. The exact G4
+`docs/research/2026-07-26-slice-j5-1-canonical-action-state.md`; J5.2 closeout
+is `docs/research/2026-07-26-slice-j5-2-interaction-transactions.md`. The exact G4
 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:

docs/ISSUES.md

@@ -69,7 +69,9 @@ What does NOT go here:
   `75930787`; J3 canonical entity/object lifetime and J4 gameplay-state
   ownership are complete through `89e6b207`. J5.1 canonical selection,
   combat, and target-mode ownership is complete at `b298f99f`; J5.2
-  interaction-transaction ownership is active from
+  interaction-transaction ownership is complete at `f5f7b417`, with 8,561
+  Release tests / 5 skips and the exact connected gate green. J5.3
+  combat/magic-intent ownership is active from
   [`plans/2026-07-25-modern-runtime-slice-j.md`](plans/2026-07-25-modern-runtime-slice-j.md).
 
 The [documentation map](README.md) defines how this tactical ledger relates to

docs/architecture/acdream-architecture.md

@@ -224,9 +224,12 @@ src/
                                   transaction/session-state owner
       RuntimeCharacterState.cs -> coupled spellbook/local-player plus
                                   character-option/run-jump owner
-      RuntimeActionState.cs -> exact selection/combat/target-mode owner
+      RuntimeActionState.cs -> exact selection/combat/target-mode and
+                               interaction-transaction owner
       InteractionState.cs -> presentation-free cursor-target mode state
-    -> J3–J4 and J5.1 complete; J5.2 interaction transactions active
+      RuntimeInteractionTransactionState.cs -> use/appraisal/pickup FIFO,
+                                               exact approach and busy borrower
+    -> J3–J4 and J5.1–J5.2 complete; J5.3 combat/magic intent active
     -> may reference Core, Core.Net, Content, and Plugin.Abstractions only
     -> must never reference App, UI, Silk.NET, OpenAL, Arch, or ImGui
   
@@ -487,9 +490,15 @@ exact `SelectionState`, `CombatState`, and presentation-free
 `InteractionState` instances borrowed by direct/headless and graphical
 consumers. App retained widgets, input controllers, plugins, session routing,
 and `GameWindow` hold views or exact borrowed children; none may construct a
-parallel production action owner. J5.2 moves the related use, appraisal,
+parallel production action owner. Its `RuntimeInteractionTransactionState`
-pickup, and approach transaction lifetime into Runtime while preserving
+child owns the use throttle/source/target, appraisal identity, typed ordered
-retail's press-time ordering and ACE's authoritative completion.
+interaction FIFO, and exact post-arrival pickup token while borrowing the one
+J4 inventory busy/request gate. App supplies picking, movement installation,
+wire transport, toasts, and retained drag/pending-slot presentation. Hidden,
+delete/GUID reuse, reset, disposal, callback re-entry, and transport failure
+all converge without retaining a second owner or changing retail's press-time
+order (`f5f7b417`). J5.3 next moves combat and spell-cast intent under this
+same action root.
 
 `GpuWorldState` owns spatial buckets only and retains the exact projection key
 through loaded/pending movement, landblock retirement/reload, origin recenter,

docs/architecture/code-structure.md

@@ -474,10 +474,10 @@ useful ordering seam, but its ownership status is **partial**.
 | Inbound/object-frame order | **Complete App orchestration** | `UpdateFrameOrchestrator` owns the complete typed host phase graph; `RetailInboundEventDispatcher`, `RetailLiveFrameCoordinator`, `LiveObjectFrameController`, `LiveSpatialPresentationReconciler`, streaming/input/teleport/player-mode/camera owners preserve the accepted order. `GameWindow.OnUpdate` is one profiler-scoped handoff (`e91f3102`). |
 | World reveal | **Complete** | `WorldRevealCoordinator` owns login/portal readiness, generation quiescence, and the exact streaming destination reservation. Login auto-entry and portal completion close only their active generation; stale completion cannot clear its replacement. Delayed portals retain the authored tunnel and centered retail wait notice rather than force-revealing incomplete content. Quiesced destination projections may become spatially resident for renderer preparation while all availability-gated gameplay consumers stay closed. |
 | Retained gameplay UI | **Mostly complete feature ownership** | `RetailUiRuntime` and focused panel/controllers own layout and behavior. `GameWindow.OnLoad` still performs substantial service composition, which is allowed until the final composition cleanup. |
-| Selection/interaction | **J5.1 complete; J5.2 active** | Runtime `RuntimeActionState` owns the exact selection, combat, and presentation-free target-mode children. App `WorldSelectionQuery` remains a graphical read-only picker; App interaction controllers currently retain use/appraisal/pickup/approach transaction policy until J5.2 moves that lifetime behind Runtime commands and views without changing retail press-time behavior. |
+| Selection/interaction | **J5.1–J5.2 complete; J5.3 active** | Runtime `RuntimeActionState` owns the exact selection, combat, target-mode, and `RuntimeInteractionTransactionState` children. The transaction child owns use/appraisal/pickup identity, the typed ordered FIFO, and exact post-arrival token while borrowing J4's sole inventory busy/request gate. App `WorldSelectionQuery`, movement/transport adapters, lighting, toasts, drag/drop, and pending-slot drawing remain presentation. No App transaction fallback or delegate queue remains (`b298f99f`, `f5f7b417`). |
 | Landblock presentation | **Complete** | `LandblockBuildFactory` owns the captured-origin DAT transaction; concrete render/physics/DAT-static publishers and `LandblockPresentationPipeline` own typed-meter publication and exact retryable retirement. `StreamingController` owns stable destination/control/unload/Near/Far queues and destination reservation. CPU mesh-cache restaging requires an exact live owner. `StreamingOriginRecenterCoordinator` serializes old-window retirement with teleport/session origin lifetimes. `GameWindow` retains construction and one pipeline field only (`c79d0a49`, closeout `4a205a3e`; Slice E closeout `91e82c3c`). |
 | Render-frame orchestration | **Complete** | `RenderFrameOrchestrator` owns the GPU-flight, resource, world/PView/shared-alpha, private-presentation, diagnostics, screenshot, and recovery graph. `GameWindow.OnRender` takes one logical window-size snapshot and performs one immutable handoff (`9d7df1bf`). |
-| Unified `GameEntity` | **Slice J active at J5.2** | Canonical identity, retained-object lifetime, direct views, ordered entity/object deltas, J4 gameplay state, and J5.1 action state share failure-safe Runtime owners while exact graphical sidecars stay in App. J5.2–J7 move interaction transactions, movement/physics/combat, and world authority before one Runtime composition root. |
+| Unified `GameEntity` | **Slice J active at J5.3** | Canonical identity, retained-object lifetime, direct views, ordered entity/object deltas, J4 gameplay state, and J5.1–J5.2 action/interaction state share failure-safe Runtime owners while exact graphical sidecars stay in App. J5.3–J7 move combat/magic intent, movement/physics/projectiles, and remaining world authority before one Runtime composition root. |
 
 ### 4.3 Revised extraction sequence
 

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 canonical entity/object lifetime and J4 gameplay-state ownership are closed at `89e6b207`; J5.1 canonical selection/combat/target-mode ownership is closed at `b298f99f`, and J5.2 interaction transactions 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 canonical entity/object lifetime and J4 gameplay-state ownership are closed at `89e6b207`; J5.1 canonical selection/combat/target-mode ownership is closed at `b298f99f`, J5.2 interaction transactions are closed at `f5f7b417`, and J5.3 combat/magic intent 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.
 
 ---
@@ -1742,8 +1742,15 @@ port in any phase — no separate listing here.
 > temporary target-mode graph; every graphical/direct consumer borrows it,
 > and the App fallback owner is deleted. Its 182 Runtime tests, 3,779 App
 > tests / 3 skips, 8,550-test / 5-skip complete Release suite, and
-> exact-binary seven-checkpoint lifecycle/reconnect gate pass. J5.2
+> exact-binary seven-checkpoint lifecycle/reconnect gate pass. J5.2 is
-> interaction-transaction ownership is active.
+> complete at `f5f7b417`: Runtime owns the strict use gate, exact use and
+> appraisal identity, typed ordered interaction FIFO, and exact post-arrival
+> pickup token while borrowing J4's sole inventory busy/request gate. App
+> retains picking, movement/transport, and presentation only; the App delegate
+> queue and transaction fields are deleted. Its 197 Runtime tests, 3,775 App
+> tests / 3 skips, 8,561-test / 5-skip complete Release suite, and exact-binary
+> seven-checkpoint lifecycle/reconnect gate pass. J5.3 combat/magic-intent
+> ownership is active.
 > The historical exact cutover
 > rollback remains
 > `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`. Slice H is complete:

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

@@ -217,8 +217,14 @@ residency is `0/0/0` at every stable checkpoint and teardown converges. Slice I
   combat, and temporary target mode; every graphical/direct consumer borrows
   those exact children, and the App fallback owner is deleted. Its 182 Runtime
   tests, 3,779 App tests / 3 skips, 8,550 full Release tests / 5 skips, and
-  exact-binary seven-checkpoint lifecycle/reconnect route pass. J5.2
+  exact-binary seven-checkpoint lifecycle/reconnect route pass. J5.2 completed
-  interaction-transaction ownership is active under
+  at `f5f7b417`: one Runtime child owns use throttling/source/target,
+  appraisal identity, typed ordered interactions, and exact post-arrival
+  pickup state while borrowing the sole J4 inventory busy/request gate. The
+  App queue and transaction fields are deleted. Its 197 Runtime tests, 3,775
+  App tests / 3 skips, 8,561 full Release tests / 5 skips, and exact-binary
+  seven-checkpoint lifecycle/reconnect route pass. J5.3 combat/magic-intent
+  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).
@@ -242,6 +248,8 @@ Slice-J4.5 closeout evidence is
 [`../research/2026-07-26-slice-j4-5-gameplay-state-closeout.md`](../research/2026-07-26-slice-j4-5-gameplay-state-closeout.md).
 Slice-J5.1 closeout evidence is
 [`../research/2026-07-26-slice-j5-1-canonical-action-state.md`](../research/2026-07-26-slice-j5-1-canonical-action-state.md).
+Slice-J5.2 closeout evidence is
+[`../research/2026-07-26-slice-j5-2-interaction-transactions.md`](../research/2026-07-26-slice-j5-2-interaction-transactions.md).
 The historical exact G4 visual rollback remains
 `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`.
 

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

@@ -2,7 +2,7 @@
 
 **Date:** 2026-07-24
 
-**Status:** Slices A–I and J0–J3 are complete. Flat-authoritative collision, zero-
+**Status:** Slices A–I, J0–J4, and J5.1–J5.2 are complete. Flat-authoritative collision, zero-
 allocation resolve scratch, parsed-graph removal, connected correctness/
 lifetime acceptance, and Slice-I closeout landed 2026-07-25. Slices F–L were
 explicitly approved 2026-07-24. Slice J0–J1 established the enforced Runtime
@@ -16,7 +16,8 @@ ownership into Runtime at `011efbea`; J4.3 moved the coupled magic/player-sheet
 owner into Runtime at `d02a12ce`; J4.4 moved character settings/projections
 and the shared typed state-command seam at `dcb61efb`; J4.5 closed canonical
 gameplay-state ownership at `89e6b207`. J5 movement, physics, interaction,
-and combat ownership is the active execution point.
+and combat ownership is active at J5.3 after canonical action state
+(`b298f99f`) and interaction transactions (`f5f7b417`) moved to Runtime.
 
 **Scope:** Reconcile and sequence the existing Modern Pipeline (`MP`) and
 Linux/headless (`LH`) tracks using the 2026-07-24 connected performance audit.
@@ -1274,7 +1275,7 @@ single Runtime shortcut/spellbook/inventory owners, graphical/no-window
 command parity, failure-safe combined ledger, 8,544-test Release suite,
 exact-binary lifecycle/reconnect gate, and canonical nine-stop route pass.
 J5 movement/physics/interaction/combat ownership is the current execution
-point.
+point. J5.1–J5.2 are complete; J5.3 combat/magic intent is active.
 Evidence:
 [`../research/2026-07-25-slice-g5-production-profile.md`](../research/2026-07-25-slice-g5-production-profile.md)
 and

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

@@ -290,8 +290,16 @@ UI, session routing, typed commands/views, and shutdown borrow its children;
 the App interaction-state class and private controller fallback are gone.
 Its 182 Runtime tests, 3,779 App tests / 3 skips, 8,550 complete Release tests /
 5 skips, and exact-binary seven-checkpoint lifecycle/reconnect gate pass.
-J5.2 interaction-transaction ownership is next. Evidence:
+J5.2 completed at `f5f7b417`. Runtime now owns the use throttle and exact
-[`../research/2026-07-26-slice-j5-1-canonical-action-state.md`](../research/2026-07-26-slice-j5-1-canonical-action-state.md).
+use/appraisal/pickup transaction identities, typed ordered interaction FIFO,
+and post-arrival pickup token while borrowing J4's sole busy/request gate.
+App retains picking, movement/transport, lighting, toasts, drag/drop, and
+pending-slot presentation. Its 197 Runtime tests, 3,775 App tests / 3 skips,
+8,561 complete Release tests / 5 skips, and exact-binary seven-checkpoint
+lifecycle/reconnect gate pass. J5.3 combat/magic intent is next. Evidence:
+[`../research/2026-07-26-slice-j5-1-canonical-action-state.md`](../research/2026-07-26-slice-j5-1-canonical-action-state.md)
+and
+[`../research/2026-07-26-slice-j5-2-interaction-transactions.md`](../research/2026-07-26-slice-j5-2-interaction-transactions.md).
 
 - Move presentation-free movement interpretation, authoritative/predicted
   physics state, selection identity, approach/use transactions, combat intent,

docs/plans/2026-07-26-modern-runtime-slice-j5.md

@@ -1,6 +1,6 @@
 # Modern runtime Slice J5 — movement, physics, interaction, and combat
 
-**Status:** ACTIVE — J5.1 complete; J5.2 next
+**Status:** ACTIVE — J5.1–J5.2 complete; J5.3 next
 **Parent:** `2026-07-25-modern-runtime-slice-j.md`, J5
 **Production base:** `2c67a2c3`
 **Authorization:** the user approved Slices F–L, including the Slice J
@@ -86,7 +86,7 @@ commands to Runtime. The camera may not write the player heading directly.
 |---|---|---|
 | J5.0 owner/retail inventory | complete | `docs/research/2026-07-26-slice-j5-owner-and-retail-order-inventory.md` |
 | J5.1 canonical action state | complete | `b298f99f913249d299796e6a71f7a9b6b283ac1a`; one Runtime selection/combat/target-mode owner; 182 Runtime tests, 3,779 App tests / 3 skips, 8,550 complete Release tests / 5 skips, exact-binary connected lifecycle/reconnect pass |
-| J5.2 interaction transactions | pending | use/appraisal/pickup/approach state and transport ordering |
+| J5.2 interaction transactions | complete | `f5f7b4177f449ebcad9724bfea263ef73ab60255`; one Runtime transaction owner; 197 Runtime tests, 3,775 App tests / 3 skips, 8,561 complete Release tests / 5 skips, exact-binary connected lifecycle/reconnect pass |
 | J5.3 combat and magic intent | pending | attack/mode/target/cast owners and typed input |
 | J5.4 local movement and outbound cadence | pending | controller, body, movement managers, MTS/AP/jump cadence |
 | J5.5 per-session physics and remote simulation | pending | engine/scratch/shadows/remote canonical body |
@@ -187,6 +187,29 @@ Gate:
   reentrancy, reset/disposal;
 - normalized graphical/direct ordered traces and no duplicate busy owner.
 
+Completed 2026-07-26 at
+`f5f7b4177f449ebcad9724bfea263ef73ab60255`.
+`RuntimeInteractionTransactionState`, owned beneath `RuntimeActionState`, now
+owns the retail 200-ms use gate, exact use source/target identity, pending and
+current appraisal identity, typed ordered interactions, and the exact
+post-arrival pickup token. It borrows—not duplicates—J4's
+`InventoryTransactionState`, so ordinary Use transfers one busy reference to
+authoritative UseDone and pickup retains the same one-request-at-a-time gate.
+App retains world rays, lighting, movement installation, transport, toasts,
+drag/drop, and pending-slot presentation. The old App delegate queue and App
+transaction fields are deleted.
+
+Identity-bound work is cancelled by exact local incarnation on delete and by
+server GUID on Hidden. Re-entrant reset, disposal, transport failure, stale
+approach completion, and GUID reuse cannot resurrect a transaction or strand
+the busy gate. Focused near/far use, carried-use, appraisal, item-on-target,
+pickup, pending-slot, hidden/delete, reset, and callback-order tests pass.
+The exact-binary connected report is
+`logs/connected-world-gate-20260726-111330/report.json`: 7/7 ready
+checkpoints, two graceful code-zero exits, zero failures or invariant
+violations, and only the 25 expected world-edge landblock misses. Evidence:
+[`../research/2026-07-26-slice-j5-2-interaction-transactions.md`](../research/2026-07-26-slice-j5-2-interaction-transactions.md).
+
 ## J5.3 — combat and magic intent
 
 Move:
@@ -381,6 +404,12 @@ J5.1 rollback:
 git revert b298f99f913249d299796e6a71f7a9b6b283ac1a
 ```
 
+J5.2 rollback:
+
+```text
+git revert f5f7b4177f449ebcad9724bfea263ef73ab60255
+```
+
 ## Acceptance
 
 J5 is complete only when:

docs/research/2026-07-26-slice-j5-2-interaction-transactions.md

@@ -0,0 +1,121 @@
+# Slice J5.2 — canonical interaction transactions
+
+**Date:** 2026-07-26
+**Production commit:** `f5f7b4177f449ebcad9724bfea263ef73ab60255`
+**Parent plan:** `docs/plans/2026-07-26-modern-runtime-slice-j5.md`
+
+## Result
+
+Interaction transaction authority now lives beneath the canonical Runtime
+action root. `RuntimeInteractionTransactionState` owns:
+
+- retail's strict 200-ms local use throttle;
+- last ordinary or targeted-use source/target identity;
+- pending and current appraisal identity;
+- the typed frame-ordered Activate/Use/Pickup FIFO;
+- the exact pending pickup identity, inventory-placement token, and
+  post-arrival movement token;
+- reset, disposal, failure, and ownership accounting.
+
+It borrows the exact `RuntimeInventoryState.Transactions` instance. There is no
+second busy counter, inventory request, object table, or pending-pickup
+authority.
+
+App remains the graphical adapter. It performs world picking, selection
+lighting, approach installation, wire transport, toasts, retained drag/drop,
+and pending-slot drawing. The former App `OutboundInteractionQueue` and the
+use/appraisal/pickup transaction fields in App controllers are deleted.
+
+## Retail order preserved
+
+The implementation preserves the named-retail order recorded in
+`docs/research/2026-07-26-slice-j5-owner-and-retail-order-inventory.md`:
+
+- `ItemHolder::UseObject @ 0x00588A80` applies the strict local use gate,
+  emits ordinary Use immediately after policy accepts it, and transfers one
+  shared UI-busy reference to the server completion;
+- `ClientUISystem::Handle_Item__UseDone @ 0x00564900` releases exactly one
+  busy reference;
+- targeted Use stores the source until a compatible target is acquired, then
+  emits the exact source/target pair;
+- pickup alone retains the existing local approach transaction and sends once
+  after the exact natural completion token.
+
+No new polling, background thread, asynchronous command seam, speculative
+approach for ordinary Use, or frame of gameplay latency was introduced.
+
+## Lifetime and failure behavior
+
+- Queued work carries server GUID, optional exact Runtime local ID, and
+  optional exact `ClientObject` identity.
+- Hidden cancels every queued/deferred transaction for that server object.
+- Deletion cancels only the removed local incarnation, so GUID reuse cannot
+  erase or execute replacement work.
+- A captured frame drains in FIFO order; re-entrant additions wait for the
+  next frame.
+- Re-entrant reset/disposal stops the captured suffix and cannot resurrect
+  targeted-use or pickup state.
+- Appraisal transport failure rolls back only the busy reference acquired by
+  that exact request.
+- A dispatched ordinary Use remains busy until authoritative UseDone; later
+  movement cancellation, Hidden, or deletion cannot retract or duplicate its
+  packet.
+- Runtime action disposal precedes inventory disposal because the transaction
+  child borrows the exact inventory gate.
+
+## Automated gates
+
+All commands ran in Release:
+
+- `dotnet test tests/AcDream.Runtime.Tests/AcDream.Runtime.Tests.csproj`:
+  197 passed.
+- `dotnet test tests/AcDream.App.Tests/AcDream.App.Tests.csproj`:
+  3,775 passed / 3 fixture-generator skips.
+- `dotnet build AcDream.slnx -c Release --no-restore`: passed.
+- `dotnet test AcDream.slnx -c Release --no-build --no-restore`:
+  8,561 passed / 5 established skips.
+- `git diff --check`: passed.
+
+Focused tests cover the 199/200-ms throttle boundary, ordinary and targeted
+Use, UseDone, appraisal replacement/refresh/failure, typed FIFO and re-entrant
+drain, Hidden/delete cancellation, exact approach completion, transport
+failure, pending-slot acceptance/failure, GUID reuse, reset/disposal, and
+two-instance isolation.
+
+## Exact-binary connected gate
+
+Report:
+`logs/connected-world-gate-20260726-111330/report.json`.
+
+The report identifies exact source/binary commit
+`f5f7b4177f449ebcad9724bfea263ef73ab60255` and passes:
+
+- six capped login/outdoor/world-edge/dungeon/revisit checkpoints;
+- one fresh uncapped-process reconnect checkpoint;
+- 7/7 complete reveal/readiness checkpoints;
+- zero invariant failures and zero render-scene mismatches;
+- 243.534-second capped and 61.619-second reconnect sessions;
+- graceful logout and code-zero exit for both processes;
+- zero failures;
+- one expected warning covering 25 empty world-edge landblocks.
+
+## Divergence audit
+
+This is an ownership-only move of accepted retail-faithful behavior. It adds
+no approximation, alternate algorithm, polling mirror, or asynchronous seam.
+No divergence-register row was added or retired.
+
+## Rollback
+
+```text
+git revert f5f7b4177f449ebcad9724bfea263ef73ab60255
+```
+
+Revert J5 sub-slices in reverse order. Do not revert J4's canonical inventory
+owner or Slice I's flat-collision cutover to mask a later action-owner defect.
+
+## Next boundary
+
+J5.3 moves combat attack and spell-cast intent into Runtime. App continues to
+own the combat/spell widgets, camera tracking, animations, audio, particles,
+DAT catalog/icon/formula presentation, and response text.