docs(architecture): record landblock cutover

Mark Slice 5G complete, record the 44 percent GameWindow reduction and origin-lifetime barrier, and advance the active ledger to deterministic and connected closeout.

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

@@ -47,12 +47,15 @@ passes 6,940 tests with five intentional skips. The 310-second connected R6
 gate passed seven destinations/revisits, movement/jump/combat exercises, and
 graceful close.
 
-**Current:** Slice 5 checkpoints A–F have extracted the DAT-backed worker
+**Current:** Slice 5 checkpoints A–G have extracted the DAT-backed worker
 build plus render, physics, DAT-static, and retryable Near/full presentation
-ownership into `LandblockPresentationPipeline`. `GameWindow` is 9,011 lines
-and the Release suite passes 7,039 tests with five intentional skips. Slice 5G
-now removes the obsolete callback bodies and scratch/facade state before the
-deterministic and connected closeout in H.
+ownership into `LandblockPresentationPipeline`. Production has no callback
+facade back into the deleted GameWindow apply bodies. A retained shared-origin
+transaction retires the complete old window before teleport recenter or
+session replacement, including failure/retry and fast relogin. `GameWindow` is
+8,793 raw lines (44% below the campaign baseline) and the Release suite passes
+7,052 tests with five intentional skips. Slice 5H deterministic and connected
+closeout is active.
 
 This is a behavior-preserving structural program. Severe regressions still get
 root-cause fixes in separate commits; ordinary feature work resumes with M4

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

@@ -19,13 +19,14 @@ layer, the active structural prerequisite is the behavior-preserving
 The 2026-07-21 audit baseline was 15,723 lines, 278 fields, and 205 methods.
 Selection/interaction Slice 1, live-animation-presentation Slice 2, complete
 live-session ownership Slice 3, and live-entity App integration Slice 4 are
-complete. Slice 5 landblock-presentation checkpoints A–F are also complete:
+complete. Slice 5 landblock-presentation checkpoints A–G are also complete:
 the worker DAT transaction, render/physics/static publishers, and retryable
-Near/full retirement now have focused owners. `GameWindow` is 9,011 lines,
-down 1,290 from the Slice-5 baseline and 6,712 from the campaign baseline. The
-full Release suite passes 7,039 tests / 5 skips; Slice 4's seven-destination
-connected R6 route passed in 310 seconds. Slice 5G direct cutover and dead
-facade/scratch cleanup is active next.
+Near/full retirement now have focused owners. The direct production cutover
+also serializes complete old-window retirement with teleport and session
+origin lifetimes. `GameWindow` is 8,793 raw lines, down 1,508 from the Slice-5
+baseline and 6,930 (44%) from the campaign baseline. The full Release suite
+passes 7,052 tests / 5 skips; Slice 4's seven-destination connected R6 route
+passed in 310 seconds. Slice 5H deterministic/connected closeout is active.
 
 Carried:
 #153 far-teleport residual, #116 slide-response, the remaining R6 ownership cleanup plus

docs/plans/2026-07-21-gamewindow-slice-5-landblock-presentation.md

@@ -96,7 +96,7 @@ test, and bisectable commit rather than being hidden in a mechanical move.
     impossible. Three corrected-diff reviews are clean. Release gate: 7,039
     passed / 5 skipped; build green with 17 pre-existing test-project warnings;
     `GameWindow.cs` is 9,011 lines.
-- [ ] G — cut `StreamingController` and `GameWindow` directly to the pipeline;
+- [x] G — cut `StreamingController` and `GameWindow` directly to the pipeline;
   delete old bodies, scratch state, and callback facades.
 - [ ] H — three-agent corrected-diff review, full Release suite, deterministic
   lifecycle gate, seven-destination resource soak, documentation, and durable
@@ -375,8 +375,26 @@ AdvanceLandblockPresentationRetirement
   apply-diagnostic scratch state that now have focused owners.
 - Add structural source tests and remeasure GameWindow lines/fields/methods.
 
+**Complete in `c79d0a49`.** Production constructs one concrete pipeline;
+legacy callback constructors are internal test seams and structural tests keep
+them out of the composition root. The old GameWindow apply methods and their
+building/diagnostic scratch state are deleted. A retained
+`StreamingOriginRecenterCoordinator` now joins complete old-window
+presentation retirement to teleport recenter and session cancellation before
+the shared origin may be reused. Reviews closed full-window overlap, radius
+reconfiguration, sealed-dungeon bootstrap, committed-callback retry,
+reentrancy, fast-relogin, and ordinary-logout gaps. Three final reviews are
+clean; the zero-warning Release build and 7,052 tests pass with five skips.
+`GameWindow.cs` is 8,793 raw lines, 1,508 below the Slice-5 baseline and 6,930
+(44%) below the campaign baseline.
+
 ### H — closeout
 
+**Active.** No new landblock ownership moves are planned in H; it proves the
+landed graph under deterministic and connected lifecycle churn, reconciles
+divergence pointers/documentation, and records the final Slice-5 structural
+measurement before Slice 6 begins.
+
 - Run focused App/Core/Net tests after each checkpoint.
 - After each code checkpoint, run three independent read-only reviews: retail/
   WorldBuilder conformance, architecture/integration, and adversarial failure