docs: close r3 test cleanup

docs/reviews/2026-08-18-r3-test-truth-ledger.md

@@ -1,6 +1,6 @@
 # R3 test-truth and cleanup ledger
 
-Status: **active**
+Status: **complete**
 
 Branch: `codex/release-stabilization`
 
@@ -38,12 +38,12 @@ pwsh ./tools/audit-test-inventory.ps1
 The generated JSON lives under ignored `artifacts/test-audit/`; it is not a
 second 6.8 MB checked-in source of truth. The script and this reviewed ledger
 are durable, while paths and line numbers regenerate after every batch. The
-inventory refreshed through Batch X reports:
+final closeout inventory at implementation commit `14d371a0` reports:
 
 | Syntax signal | Current count |
 |---|---:|
 | Tracked/parsed C# test files | 1,254 / 1,254 |
-| Attributed test methods (not expanded theory cases) | 11,417 |
+| Attributed test methods (not expanded theory cases) | 11,414 |
 | Exact duplicate-data rows | 0 |
 | Reviewed body-equivalent groups / methods | 11 / 27 |
 | Methods containing at least one empty `return;` | 138 |
@@ -56,7 +56,7 @@ inventory refreshed through Batch X reports:
 | Methods directly using `Thread.Sleep` / `Task.Delay` | 15 / 14 |
 | Cancellable-infinite-only / elapsed-time methods | 5 / 24 |
 | Methods directly reading environment variables | 47 |
-| Methods directly / through same-file helpers reading `.cs` source text | 57 / 92 |
+| Methods directly / in total reading `.cs` source text | 21 / 22 |
 
 The three remaining prerequisite-return candidates are all reviewed branch
 false positives: the two Windows/Linux factory assertions and the launcher's
@@ -1538,3 +1538,57 @@ Verification follows the proportionate R3 policy:
   source-pin comment in the affected tests. With this batch, all 85 approved
   replacements are implemented; final inventory reconciliation and the one
   complete Release gate follow next.
+
+## R3 closeout
+
+R3 closes on implementation commit `14d371a0`. The final Roslyn inventory and
+the one complete Release gate both ran from that clean commit; this closeout is
+the only later documentation change.
+
+The final inventory parses all 1,254 tracked C# test files and attributes
+11,414 test methods. It finds 21 direct source readers and 22 readers in total.
+Those 22 reconcile exactly to the approved retained boundary:
+
+| Retained disposition | Methods | Reconciled owners |
+|---|---:|---|
+| Whole-tree architecture policy | 17 | `LinuxPlatformBoundaryTests` (5), `RenderSceneArchitectureTests` (2), `RuntimePhysicsOwnershipTests` (4), `RuntimeEntityOwnershipTests` (2), and one each in `RuntimeActionOwnershipTests`, `RuntimeMovementOwnershipTests`, `RuntimeWorldTransitOwnershipTests`, and `RuntimeDatAccessArchitectureTests` |
+| Cross-artifact source/project contract | 5 | `ParticleBindlessInstanceTests` (1), `PerformanceToolsTests` (1), and `LauncherProjectBoundaryTests` (3) |
+
+The original corrected inventory's equation therefore closes without an
+unclassified reader: 107 source readers = 85 replaced implementation/test-
+model freezes + 17 retained architecture policies + 5 retained cross-artifact
+contracts. Three of the 85 replacements removed a redundant test because an
+existing stronger behavioral oracle already covered the claim; the other 82
+kept a test and changed its evidence seam.
+
+The other approved boundaries also reconcile:
+
+- Batch V deleted exactly 28 attributed self-tests: 17 widget-recorder tests,
+  nine main-menu-recorder tests, and two positional-record tests. All three
+  approved files remain absent.
+- `FakePanelRenderer` remains. The retained behavior boundary is exactly 23
+  attributed methods and 29 expanded cases: 22 `ChatPanel` layout/input/focus
+  methods plus the `ChatVMCombatTests` render-path method.
+- The issue taxonomy remains descriptive: 47 `Issue###...Tests.cs` files and
+  all 155 attributed methods remain, with every filename carrying a behavior
+  suffix after its issue number.
+
+R3 changed no product behavior. A diff from starting commit `8e884679` contains
+eight `src/` paths, all previously reviewed testability/documentation seams:
+two comment-only test-name updates; deterministic clock injection for input and
+streaming whose public production construction still selects the same system
+clock; nullable launcher contention callbacks that production leaves unset;
+and one test-assembly `InternalsVisibleTo`. No shipping default, ownership,
+algorithm, protocol, or presentation path changes.
+
+Final verification at clean implementation commit `14d371a0`:
+
+- locked Release restore and build: 44 projects, zero warnings, zero errors;
+- complete hermetic Release gate: 14,346 passed, zero skipped, zero failed,
+  across all 12 default test assemblies; and
+- durable ignored evidence: `artifacts/test-audit/test-inventory.json` and
+  `artifacts/release-gate/release-gate-summary.json`, with logs, TRX files,
+  environment capture, and SHA-256 manifest beside the gate summary.
+
+Every R3 decision is now represented by the batch ledger above, the final
+inventory agrees with every approved count, and no cleanup item remains open.