docs(rendering): close retained classification gate

Record exact capped, uncapped, and dense parity evidence for 6a026c5a, including warm reuse, hidden-frame synchronization, full Release results, and the unchanged pre-cutover rollback anchor. Advance the execution ledger to G4.

docs/plans/2026-07-24-modern-runtime-slices-f-g-render-scene.md

@@ -26,8 +26,9 @@ retail-faithful gameplay
 | G0 — borrowed frame product | complete | Two reusable arenas publish exact generation/frame-stamped borrowed views for scene candidates, cell ranges, transforms, classification, light sets, selection, PView/clip references, counts, and source digest. Release/reuse invalidates every copied view; abort never publishes; frame N may build while N-1 is borrowed; the warm path allocates zero bytes. Eight focused tests pass inside the 3,743-App / 8,227-solution Release gate. |
 | G1 — scene-query replacement | complete | Exact `e346f8bb` passed capped and uncapped nine-stop routes plus uncapped dense Arwic: 29,392 + 29,025 + 1,522 same-frame candidate comparisons, zero mismatches, equal counts/digests at every checkpoint, exact binary/source identity, and graceful shutdown. Evidence: `docs/research/2026-07-25-slice-g1-scene-query-candidate-gate.md`. |
 | G2 — packed dispatcher input | complete | Exact `f9829d5f` passed capped and uncapped nine-stop routes plus dense Arwic. Candidate order, packed input, classified output, and selection each completed 16,879 + 17,282 + 770 comparisons with zero mismatch; journal/rejection counts were zero and shutdown graceful. Evidence: `docs/research/2026-07-25-slice-g2-packed-dispatcher-gate.md`. |
-| G3 — retained classification/storage | active | Restore the isolated retained-classification cache after G2's exact-order correction, then prove dirty-only rebuild and zero-allocation warm reuse before any draw-source switch. |
-| G4–G5 | pending | No production consumer has switched. |
+| G3 — retained classification/storage | complete | Exact `6a026c5a` passed capped and uncapped nine-stop routes plus dense Arwic with 17,069 + 16,827 + 757 exact comparisons in every channel, zero mismatch, warm cross-frame reuse, and graceful shutdown. Evidence: `docs/research/2026-07-25-slice-g3-retained-classification-gate.md`. |
+| G4 — production cutover | active | Switch one production draw consumer to the exact retained frame product, record the exact cutover hash before the visual gate, then remove no oracle evidence until parity and fixed-camera image checks pass. |
+| G5 | pending | Physical performance/lifecycle closeout follows the user visual gate. |
 
 The exact pre-F/G runtime rollback anchor remains `e7d9d6fa`. F0 is
 non-drawing diagnostic infrastructure and therefore is not a visual-cutover
@@ -602,6 +603,23 @@ clip slots, light sets, selection parts, alpha records, and draw counts.
 **Commit gate:** warm unchanged frames rebuild no static classification and
 allocate no core scene/dispatcher memory.
 
+**Completed 2026-07-25.** Exact `6a026c5a` passed capped and uncapped
+nine-stop routes plus uncapped dense Arwic. Candidate order, packed input,
+classified output, and selection completed 17,069 + 16,827 + 757 continuous
+comparisons with zero mismatch. Dense Arwic's final warm frame reused all
+3,828 unchanged visible classifications, rebuilt zero static projections, and
+kept 410 active animated classifications on the live path.
+
+The first development pass exposed a reveal-edge ownership gap: inbound state
+continues while portal reveal blocks ordinary simulation, but the derived
+render projection had also been blocked. A narrow hidden-frame projection sync
+now follows inbound network/command mutation without advancing effects,
+particles, attachments, lights, animation, or physics. Dirty state is
+acknowledged only after every packed comparison succeeds. Deterministic tests
+also pin generation/incarnation replacement, incomplete resources, retirement,
+and 1,000 warm reuse frames with zero thread allocation. Evidence:
+`docs/research/2026-07-25-slice-g3-retained-classification-gate.md`.
+
 ### G4 — Cutover
 
 1. Run old and new input construction in compare-only mode; draw only the old

docs/research/2026-07-25-slice-g3-retained-classification-gate.md

@@ -0,0 +1,84 @@
+# Slice G3 Retained Classification Gate
+
+**Date:** 2026-07-25
+
+**Candidate:** `6a026c5ab04b3a0148045490fcb33d86084e0c0d`
+
+**Result:** accepted; G3 complete
+
+## Purpose
+
+G3 retains mesh/material classification per visible render projection while
+refreshing frame-varying transforms, clip slots, selected lights, opacity,
+selection lighting, and picking transforms. Classification remains live for
+active animation, incomplete mesh/texture resources, and active translucency
+fades. The production renderer still draws the accepted path; this is
+compare-only evidence and not a visual-cutover rollback unit.
+
+## Exact physical evidence
+
+| Route | Report | Exact comparisons per channel | Final static rebuild / cross-frame reuse | Exit |
+|---|---|---:|---:|---|
+| Uncapped nine-stop | `logs/connected-r6-soak-20260725-031419.report.json` | 16,827 / 16,827 | 2 / 6,037 | graceful |
+| Capped nine-stop | `logs/connected-r6-soak-20260725-032350.report.json` | 17,069 / 17,069 | 2 / 6,038 | graceful |
+| Uncapped dense Arwic | `logs/connected-dense-town-20260725-033339.report.json` | 757 / 757 | 0 / 3,828 | graceful |
+
+For every route, all four continuously sampled channels had zero cumulative
+mismatches:
+
+- ordered PView candidates;
+- packed dispatcher input;
+- classified opaque/transparent output;
+- accepted selection parts.
+
+Every process used a Release binary whose embedded commit exactly matched
+source, carried zero pending render-journal entries and zero rejected deltas at
+canonical checkpoints, and closed through the graceful logout path. Dense
+Arwic exercised 15,530 resident objects and 111 active animated statics. Its
+final retained classification payload was 4,937,760 bytes; active animation
+remained on the live path while all 3,828 unchanged visible projections reused
+their prior classification.
+
+## Reveal-edge correction
+
+The first development gate on `54d17eb4` exposed transient mismatches that the
+older checkpoint-only acceptance had not rejected. At a portal reveal, inbound
+network dispatch continued mutating hidden live objects while ordinary world
+simulation and full presentation reconciliation were intentionally blocked.
+The derived render scene therefore retained an older transform until the
+update after the first visible frame.
+
+The stronger ordered diagnostics named the exact live projection and transform
+fingerprint. Corrective commit `6a026c5a` splits out a narrow render-projection
+sync after hidden-frame network and command phases. It updates only the derived
+scene; physics, animation, effects, particles, attachments, and lights remain
+quiesced. The capped and uncapped nine-stop reruns prove that initial reveal,
+all portal generations, and the final Caul revisit now maintain exact
+same-frame parity.
+
+## Deterministic gate
+
+- Exact identity includes projection ID, owner incarnation, mesh/material,
+  degrade state, and geometry/appearance fingerprints.
+- Transform-only dirtiness reuses classification; appearance dirtiness,
+  incarnation changes, incomplete resources, and active animation rebuild.
+- Generation replacement and unseen projection retirement release retained
+  payload.
+- A warmed projection completes 1,000 reuse frames with zero thread
+  allocations.
+- Dirty acknowledgement occurs only after candidate, packed-input,
+  classified-output, and selection comparisons all succeed.
+- Hidden world frames synchronize only the derived render projection after
+  inbound mutation.
+- App Release: 3,767 passed / 3 skipped.
+- Complete Release solution: 8,251 passed / 5 skipped.
+- Release build: zero warnings and zero errors.
+
+## Rollback
+
+G3 remains compare-only. Commits through `6a026c5a` are safe to retain if a
+later production visual cutover is reverted. The exact pre-cutover runtime
+rollback anchor remains `e7d9d6fa`. G4 must record its exact production
+cutover commit in the F/G plan and render-pipeline memory before the user
+visual gate; that cutover commit, not G3, will be tomorrow's surgical rollback
+unit.