docs(runtime): close J1 contract gate

Record the exact-binary connected lifecycle/reconnect acceptance, synchronized active pointers, rollback, and durable evidence before session ownership moves in J2.

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

@@ -1,7 +1,7 @@
 # Modern runtime Slice J — presentation-independent runtime
 
-**Status:** J0 COMPLETE — lifetime plan, project boundary, and dependency
-guards; Slice I is closed and J1 is ACTIVE
+**Status:** J0–J1 COMPLETE — lifetime boundary plus borrowed view, command,
+event, clock, generation, and teardown contracts; J2 is 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
@@ -103,6 +103,8 @@ git revert b632672e5ccabfb44c551e08f1c411ab2669c44a
 
 ### J1 — read, command, event, clock, and lifecycle contracts
 
+**Completed 2026-07-25 at `854d9e9c`.**
+
 - Define `IGameRuntimeView`, typed command interfaces, ordered event/delta
   records, instance clock, lifecycle states, generation tokens, and teardown
   acknowledgements.
@@ -117,6 +119,28 @@ Gate: adapter and direct-host traces are identical over deterministic session,
 entity, inventory, chat, movement, and portal fixtures; no canonical owner has
 moved yet.
 
+Result:
+
+- `AcDream.Runtime` owns immutable borrowed-view contracts, typed commands,
+  ordered deltas, an instance clock, generation tokens, lifecycle snapshots,
+  and retryable teardown acknowledgements.
+- Focused App adapters borrow the current canonical owners. They create no
+  second GUID map, state store, command queue, or frame boundary.
+- Startup plus press-time selection, movement, and combat input now traverse
+  the typed command seam synchronously and still mutate the exact same owners.
+- Runtime tests pass 13/13, App tests pass 3,838 with three skips, and the
+  complete Release solution passes 8,424 tests with five skips.
+- The exact-binary connected gate at
+  `logs/connected-world-gate-20260725-190953/report.json` passed six capped
+  world checkpoints plus a fresh uncapped reconnect. Both processes exited
+  gracefully with no failures.
+
+Exact rollback:
+
+```text
+git revert 854d9e9cd13092bd5aaa3cf025d73eeb4600e9f8
+```
+
 ### J2 — session lifetime and ordered transport group
 
 - Remove App presentation dependencies from `LiveSessionController`,