diff --git a/AGENTS.md b/AGENTS.md
index a46cdb9e..6661957d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -116,7 +116,7 @@ user-gated. Deterministic world-lifecycle automation protects fresh login,
 outdoor/world-edge/dungeon travel, same-location revisit, exact graceful
 disconnect, and uncapped fresh-process reconnect with JSON/PNG artifacts.
 Release builds; the current performance-program checkpoint passes
-3,826 App tests / 3 skips and 8,335 complete-solution tests / 5 skips.
+3,836 App tests / 3 skips and 8,413 complete-solution tests / 5 skips.
 
 **M4 feature work order (paused while the authorized performance program
 executes):** the six-slice pre-M4 world-interaction completion
@@ -181,23 +181,24 @@ gates pass. The lifecycle/reconnect and nine-stop routes sampled 14,064 exact
 queries with zero mismatch, fault, or artifact; graph/flat cell residency
 matched at every stable checkpoint and teardown converged. Release build and
 8,396 solution tests / 5 skips pass.
-Slice I6 is committed at `068a0651`: gameplay collision is flat-authoritative
-and the parsed graph is only a sampled referee. The strict dense-Arwic gate
-matched 46,309/46,309 queries, and the exact physical nine-stop lifecycle soak
-passed with all publication, retirement, upload, warmup, and class backlogs
-converged. Parsed-graph deletion remains gated on the user's final
-collision/visual acceptance. The cutover rollback is
-`git revert 068a06518dd710ca5e7f166754cbb7789ca1ed0f`.
+Slice I is complete. I6 made gameplay collision flat-authoritative at
+`068a0651`; its strict dense-Arwic gate matched 46,309/46,309 queries and the
+physical nine-stop soak converged. After user collision acceptance, I7 removed
+every production parsed collision graph at `82f8d4f8`. Release build and 8,413
+tests / 5 skips pass; both exact-binary connected routes report `0/0/0` parsed
+graph residency at every stable checkpoint with graceful teardown. The
+cutover rollback is
+`git revert 068a06518dd710ca5e7f166754cbb7789ca1ed0f`; graph-removal rollback
+is `git revert 82f8d4f82e24ad85042ac3e25c4f6464bebce758`.
 Slice J0 is complete at `b632672e`: `AcDream.Runtime` now provides the enforced
 presentation-independent assembly boundary without moving gameplay behavior.
-Four dependency guards, the Release build, and 8,406 tests / 5 skips pass. J1
-waits behind the I6/I7 user gate. Its rollback is
+Four dependency guards pass. J1 is active. J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 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 I7 closeout is active from
+passes. Slice I is closed in
 `docs/plans/2026-07-25-modern-runtime-slice-i.md`; the coherent Slice J campaign
-is pinned in `docs/plans/2026-07-25-modern-runtime-slice-j.md`. The exact G4 visual rollback
+executes from `docs/plans/2026-07-25-modern-runtime-slice-j.md`. The exact G4 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:
 `docs/research/2026-07-25-slice-h-closeout.md` and
@@ -207,7 +208,8 @@ the portal-warmup corrections. Evidence:
 `docs/research/2026-07-25-slice-i3-prepared-collision-package.md` and
 `docs/research/2026-07-25-slice-i4-flat-bsp-differential.md` and
 `docs/research/2026-07-25-slice-i5-dual-collision-shadow.md` and
-`docs/research/2026-07-25-slice-i6-flat-production-cutover.md`.
+`docs/research/2026-07-25-slice-i6-flat-production-cutover.md` and
+`docs/research/2026-07-25-slice-i7-closeout.md`.
 
 **Structural prerequisite before new M4 subsystem work:** all eight
 behavior-preserving `GameWindow` decomposition slices and the automated
@@ -228,7 +230,7 @@ uncapped Release presentation is smooth, while physics, collision, and wire
 truth remain correct.
 See `docs/plans/2026-07-22-gamewindow-slice-8-composition-lifecycle.md` and
 `docs/architecture/code-structure.md`. **Carried:** #153, #116, remaining
-R6 ownership cleanup, TS-50/TS-51/TS-53, Modern Runtime Slice I+, and #225's
+R6 ownership cleanup, TS-50/TS-51/TS-53, Modern Runtime Slice J+, and #225's
 lifestone/particle alpha visual gate.
 
 Start structural work at `memory/project_gamewindow_decomposition.md` and
diff --git a/CLAUDE.md b/CLAUDE.md
index a558f80a..72e67d51 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -114,7 +114,7 @@ user-gated. Deterministic world-lifecycle automation protects fresh login,
 outdoor/world-edge/dungeon travel, same-location revisit, exact graceful
 disconnect, and uncapped fresh-process reconnect with JSON/PNG artifacts.
 Release builds; the current performance-program checkpoint passes
-3,826 App tests / 3 skips and 8,335 complete-solution tests / 5 skips.
+3,836 App tests / 3 skips and 8,413 complete-solution tests / 5 skips.
 
 **M4 feature work order (paused while the authorized performance program
 executes):** the six-slice pre-M4 world-interaction completion
@@ -179,23 +179,24 @@ gates pass. The lifecycle/reconnect and nine-stop routes sampled 14,064 exact
 queries with zero mismatch, fault, or artifact; graph/flat cell residency
 matched at every stable checkpoint and teardown converged. Release build and
 8,396 solution tests / 5 skips pass.
-Slice I6 is committed at `068a0651`: gameplay collision is flat-authoritative
-and the parsed graph is only a sampled referee. The strict dense-Arwic gate
-matched 46,309/46,309 queries, and the exact physical nine-stop lifecycle soak
-passed with all publication, retirement, upload, warmup, and class backlogs
-converged. Parsed-graph deletion remains gated on the user's final
-collision/visual acceptance. The cutover rollback is
-`git revert 068a06518dd710ca5e7f166754cbb7789ca1ed0f`.
+Slice I is complete. I6 made gameplay collision flat-authoritative at
+`068a0651`; its strict dense-Arwic gate matched 46,309/46,309 queries and the
+physical nine-stop soak converged. After user collision acceptance, I7 removed
+every production parsed collision graph at `82f8d4f8`. Release build and 8,413
+tests / 5 skips pass; both exact-binary connected routes report `0/0/0` parsed
+graph residency at every stable checkpoint with graceful teardown. The
+cutover rollback is
+`git revert 068a06518dd710ca5e7f166754cbb7789ca1ed0f`; graph-removal rollback
+is `git revert 82f8d4f82e24ad85042ac3e25c4f6464bebce758`.
 Slice J0 is complete at `b632672e`: `AcDream.Runtime` now provides the enforced
 presentation-independent assembly boundary without moving gameplay behavior.
-Four dependency guards, the Release build, and 8,406 tests / 5 skips pass. J1
-waits behind the I6/I7 user gate. Its rollback is
+Four dependency guards pass. J1 is active. J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 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 I7 closeout is active from
+passes. Slice I is closed in
 `docs/plans/2026-07-25-modern-runtime-slice-i.md`; the coherent Slice J campaign
-is pinned in `docs/plans/2026-07-25-modern-runtime-slice-j.md`. The exact G4 visual rollback
+executes from `docs/plans/2026-07-25-modern-runtime-slice-j.md`. The exact G4 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:
 `docs/research/2026-07-25-slice-h-closeout.md` and
@@ -205,7 +206,8 @@ the portal-warmup corrections. Evidence:
 `docs/research/2026-07-25-slice-i3-prepared-collision-package.md` and
 `docs/research/2026-07-25-slice-i4-flat-bsp-differential.md` and
 `docs/research/2026-07-25-slice-i5-dual-collision-shadow.md` and
-`docs/research/2026-07-25-slice-i6-flat-production-cutover.md`.
+`docs/research/2026-07-25-slice-i6-flat-production-cutover.md` and
+`docs/research/2026-07-25-slice-i7-closeout.md`.
 
 **Structural prerequisite before new M4 subsystem work:** all eight
 behavior-preserving `GameWindow` decomposition slices and the automated
@@ -226,7 +228,7 @@ uncapped Release presentation is smooth, while physics, collision, and wire
 truth remain correct.
 See `docs/plans/2026-07-22-gamewindow-slice-8-composition-lifecycle.md` and
 `docs/architecture/code-structure.md`. **Carried:** #153, #116, remaining
-R6 ownership cleanup, TS-50/TS-51/TS-53, Modern Runtime Slice I+, and #225's
+R6 ownership cleanup, TS-50/TS-51/TS-53, Modern Runtime Slice J+, and #225's
 lifestone/particle alpha visual gate.
 
 Start structural work at `memory/project_gamewindow_decomposition.md` and
diff --git a/docs/ISSUES.md b/docs/ISSUES.md
index 3a994e17..ff89058c 100644
--- a/docs/ISSUES.md
+++ b/docs/ISSUES.md
@@ -59,6 +59,12 @@ What does NOT go here:
   [`plans/2026-07-24-modern-runtime-slices-f-g-render-scene.md`](plans/2026-07-24-modern-runtime-slices-f-g-render-scene.md).
   Evidence:
   [`research/2026-07-24-slice-e-cost-budgeted-streaming-report.md`](research/2026-07-24-slice-e-cost-budgeted-streaming-report.md).
+- **Modern Runtime execution:** Slices F–I are complete. Slice I removed
+  production parsed collision graphs after exact flat differential and user
+  collision acceptance; 8,413 Release tests / 5 skips and both exact-binary
+  connected routes pass with `0/0/0` graph residency. J0's enforced
+  presentation-independent project boundary is live and J1 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
 the milestone, roadmap, architecture, divergence register, research, and
diff --git a/docs/architecture/acdream-architecture.md b/docs/architecture/acdream-architecture.md
index 28f6fc32..cf590d75 100644
--- a/docs/architecture/acdream-architecture.md
+++ b/docs/architecture/acdream-architecture.md
@@ -175,7 +175,7 @@ src/
       TransitionTypes.cs      -> SpherePath / CollisionInfo / transition helpers (active in L.2)
       FlatCollisionAssets.cs  -> immutable array/index collision schema (Slice I2)
       FlatCollisionAssetBuilder.cs -> deterministic DAT graph preparation (Slice I2/I3)
-      PhysicsDataCache.cs     -> GfxObj / Setup / CellStruct collision data (done, active)
+      PhysicsDataCache.cs     -> flat prepared GfxObj / Setup / CellStruct / EnvCell collision owner
       ShadowObjectRegistry.cs -> broadphase for nearby physics objects (active)
       PhysicsEngine.cs        -> ResolveWithTransition active player path
       ProjectilePhysicsStepper.cs -> pure retail projectile integration + sweep
@@ -204,7 +204,7 @@ src/
     Messages/                 -> done (CreateObject, MoveToState, etc.)
 
   AcDream.Runtime/           presentation-independent client kernel boundary
-    RuntimeAssemblyMarker.cs  -> J0 dependency boundary; owner moves start after I6/I7
+    RuntimeAssemblyMarker.cs  -> J0 dependency boundary; J1 contracts active
     -> may reference Core, Core.Net, Content, and Plugin.Abstractions only
     -> must never reference App, UI, Silk.NET, OpenAL, Arch, or ImGui
   
@@ -406,7 +406,10 @@ What exists and is active:
 - `TransitionTypes` carries `SpherePath`, `CollisionInfo`, `ObjectInfo`,
   transition validation, step-up/down, contact-plane handling, and partial
   slide behavior.
-- `PhysicsDataCache` loads GfxObj, Setup, and CellStruct physics data from DATs.
+- `PhysicsDataCache` owns immutable flat GfxObj, Setup, CellStruct, and EnvCell
+  collision assets loaded from the validated prepared package. Production
+  retains no parsed DAT collision graph; graph construction is restricted to
+  bake/equivalence tools and explicit test oracles.
 - `ShadowObjectRegistry` gives movement a broadphase over nearby objects and
   buildings.
 - `TerrainSurface` uses triangle-aware terrain contact; older "bilinear terrain
diff --git a/docs/architecture/worldbuilder-inventory.md b/docs/architecture/worldbuilder-inventory.md
index a57e76eb..83f2d89c 100644
--- a/docs/architecture/worldbuilder-inventory.md
+++ b/docs/architecture/worldbuilder-inventory.md
@@ -140,8 +140,8 @@ strict little-endian codec and `IPreparedCollisionSource`.
 `PakPreparedAssetSource` implements the render and collision interfaces over
 one mmap; it does not create a second DAT reader or mapping. CellStruct
 payloads alias only after exact serialized-byte comparison, while each
-EnvCell topology remains independently keyed. Production traversal is still
-the parsed graph oracle until Slice I6. Full-catalog evidence:
+EnvCell topology remains independently keyed. Production traversal remained
+on the parsed graph oracle until the later Slice-I cutover. Full-catalog evidence:
 `docs/research/2026-07-25-slice-i3-prepared-collision-package.md`.
 
 **Slice I5 dual-publication seam (2026-07-25).** Near-tier
@@ -155,6 +155,19 @@ fault. This is still one `DatCollection` and one prepared-package mmap, not a
 second reader or a WorldBuilder runtime dependency. Evidence:
 `docs/research/2026-07-25-slice-i5-dual-collision-shadow.md`.
 
+**Slice I6/I7 flat-authoritative closeout (2026-07-25).** Production
+`PhysicsDataCache` now publishes only immutable flat GfxObj, Setup,
+CellStruct, and EnvCell-topology records from the validated package. Stable
+world state strips temporary `PhysicsDatBundle` source material, and near
+landblock builds discard raw Environment/GfxObj collision graphs once the
+flat closure exists. Parsed graph constructors remain explicit
+test/bake/equivalence oracles only; gameplay has no graph fallback or referee.
+Both exact-binary connected routes report `0/0/0` retained parsed collision
+graphs at every stable checkpoint while flat residency remains populated.
+This remains one `DatCollection`, one preparation algorithm, and one package
+mmap. Evidence:
+`docs/research/2026-07-25-slice-i7-closeout.md`.
+
 **Retail VFX hook compatibility seam (2026-07-14).** Chorizite.DatReaderWriter
 2.1.7 models `CreateBlockingParticleHook` as the common hook header only, while
 retail inherits the complete `CreateParticleHook` payload. The narrow readers in
diff --git a/docs/plans/2026-04-11-roadmap.md b/docs/plans/2026-04-11-roadmap.md
index 38e47215..3328b099 100644
--- a/docs/plans/2026-04-11-roadmap.md
+++ b/docs/plans/2026-04-11-roadmap.md
@@ -1666,20 +1666,22 @@ port in any phase — no separate listing here.
 > ownership. Lifecycle/reconnect plus the nine-stop route sampled 14,064
 > queries with exact state/float-bit equality, zero mismatch/fault/artifact,
 > equal graph/flat cell residency, and graceful teardown. Release build and
-> 8,396 solution tests / 5 skips pass. I6 production cutover is committed:
-> gameplay is flat-authoritative, dense Arwic matched 46,309/46,309 referee
-> queries, and the physical nine-stop soak converged. Parsed-graph deletion
-> waits on the user's collision/visual acceptance. J0 established the
-> presentation-independent Runtime boundary with four enforced dependency
-> guards; Release build and 8,406 tests / 5 skips pass.
+> 8,396 solution tests / 5 skips pass. I6 made gameplay flat-authoritative:
+> dense Arwic matched 46,309/46,309 referee queries and the physical nine-stop
+> soak converged. Following user collision acceptance, `82f8d4f8` removed
+> every production parsed collision graph. I7 passes 8,413 Release tests / 5
+> skips plus both exact-binary connected routes; every stable checkpoint
+> reports `0/0/0` graph residency while flat assets remain populated. J0
+> established the presentation-independent Runtime boundary with four enforced
+> dependency guards; J1 is now active.
 > The historical exact cutover
 > rollback remains
 > `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`. Slice H is complete:
 > retained UI/frame work, exact bounded light selection, and
 > pooled/borrowed/direct network I/O pass 8,292 Release tests / 5 skips and the
-> connected lifecycle/reconnect gate. Slice I7 closeout remains active from
-> [its detailed plan](2026-07-25-modern-runtime-slice-i.md); Slice J is pinned
-> in [its lifetime-group plan](2026-07-25-modern-runtime-slice-j.md).
+> connected lifecycle/reconnect gate. Slice I is closed in
+> [its detailed plan](2026-07-25-modern-runtime-slice-i.md); Slice J1 executes
+> from [its lifetime-group plan](2026-07-25-modern-runtime-slice-j.md).
 
 **Spec:** `docs/superpowers/specs/2026-07-05-modern-pipeline-design.md` (the
 umbrella design — read it first). **Goal:** smoothness first (no frame over
@@ -1703,11 +1705,11 @@ hitch and follows.
 | MP1a | `AcDream.Content` extraction (GL-free MeshExtractor + boundary records out of App) | ✅ SHIPPED 2026-07-05 — user-gated (renders identical, zero tripwires, perf-neutral); 8 commits `651d041e`..`b0758d77` |
 | MP1b | Pak format + `acdream-bake` CLI + mmap `PakReader` + equivalence/full-scale gate | ✅ **SHIPPED 2026-07-24** — 729,888 EnvCell keys → 17,117 unique geometries + 712,771 aliases (42.6×), 751,141 total keys / 38,370 physical blobs, zero failures, 28,192.4 MiB, 81.4 s validated atomic publish; full-DAT gate also corrected a real collision in WB's legacy geometry hash. [Report](../research/2026-07-24-slice-b-full-bake-report.md) |
 | **MP-Alloc (safe batch)** | Reuse per-frame buffers: anim pose, particle draw-list, interior partition, animatedIds/drawableCells sets | ✅ SHIPPED + USER-GATED 2026-07-05 — dense-town frame-time spikes 20–87ms → 6–10ms, alloc spikes (30–75MB single-frame) eliminated, gen2 GC 5–11/window → ~0; user confirms FPS steady. 4 commits `b8c05e2b`..`91afea24` |
-| MP-Alloc (hard sites) | EnvCell settled-camera rebuild gate + physics `Transition` reuse | 🟡 Physics cutover SHIPPED 2026-07-25 — retail-shaped reset-complete transition/query scratch is bit-identical and 0 B/resolve across five profiles; immutable flat collision storage, deterministic package, zero-allocation traversal, strict dual publication, and flat-authoritative production traversal are shipped. Parsed-graph deletion awaits the user collision/visual gate. |
+| MP-Alloc (hard sites) | EnvCell settled-camera rebuild gate + physics `Transition` reuse | ✅ SHIPPED 2026-07-25 — retail-shaped reset-complete transition/query scratch is bit-identical and 0 B/resolve across five profiles; immutable flat collision storage, deterministic package, zero-allocation traversal, strict publication, flat-authoritative production traversal, and parsed-graph removal pass automated and connected acceptance. |
 | MP1c | Streaming cutover to pak + hitch gate | ✅ **SHIPPED 2026-07-24** — typed package-only production source, explicit Setup probes, non-allocating Portal-first lookup, exact translucency metadata, and ordered teardown; capped/uncapped/dense physical routes + user visual gate pass. Uncapped CPU p99 7.825→6.496 ms, GPU p99 3.406→2.706 ms, portal frame max 202.9→39.9 MiB, process allocation −41.8%, zero invalid Setup probes. [Report](../research/2026-07-24-slice-c-prepared-asset-cutover-report.md) |
 | MP2 | Retail particle distance/cell-view degradation: DAT-authored range, exact infinite/finite off-view update branches, emitter-first render scan, user-requested 2× default range | ✅ SHIPPED 2026-07-17 — Aerlinthe hotspot `0x32000223` resolves to retail 64m and defaults to 128m; landscape/entity streaming distance unchanged |
 | MP3 | Arch ECS render world + delta submission (the 300-FPS lever) | ⚪ — note: does NOT fix the steady-state GC churn (that's MP-Alloc); MP3 is the draw-submission throughput lever |
-| MP4 | Zero-alloc frame loop + flat physics data (residual, post-MP-Alloc) | 🟡 ACCEPTANCE — Slices I1–I6 shipped through flat-authoritative production traversal; dense-Arwic and physical nine-stop gates pass. User collision/visual acceptance gates parsed-graph deletion and I7 closeout. |
+| MP4 | Zero-alloc frame loop + flat physics data (residual, post-MP-Alloc) | ✅ **SHIPPED 2026-07-25** — Slice I complete: 8,413 Release tests / 5 skips, 0 B/resolve across five profiles, zero retained parsed collision graphs, exact-binary lifecycle/reconnect and nine-stop routes pass, and user collision acceptance is recorded. |
 | MP5 | Job-system parallelism | ⚪ stretch, evidence-gated |
 
 ---
diff --git a/docs/plans/2026-05-12-milestones.md b/docs/plans/2026-05-12-milestones.md
index 8e969d01..e8e03a46 100644
--- a/docs/plans/2026-05-12-milestones.md
+++ b/docs/plans/2026-05-12-milestones.md
@@ -141,16 +141,17 @@ queries with zero mismatch, fault, or artifact; graph/flat cell residency
 matched at every stable checkpoint and teardown converged. Release build and
 8,396 solution tests / 5 skips pass. Slice H is complete: retained UI/frame
 work, exact bounded light selection, and pooled/borrowed/direct network I/O
-pass. Slice I6 is committed: gameplay is flat-authoritative, its dense-Arwic
-referee gate matched 46,309/46,309 queries, and the physical nine-stop soak
-converged without publication, retirement, upload, or warmup backlog. Parsed
-graph deletion remains gated on the user's collision/visual acceptance. Slice
-J0 established and enforced the presentation-independent `AcDream.Runtime`
-boundary without moving behavior; Release build and 8,406 tests / 5 skips
-pass. Slice I7 closeout is active under
-[`2026-07-25-modern-runtime-slice-i.md`](2026-07-25-modern-runtime-slice-i.md).
-The coherent Slice J campaign is pinned in
+pass. Slice I6 made gameplay flat-authoritative; its dense-Arwic referee gate
+matched 46,309/46,309 queries and the physical nine-stop soak converged.
+Following user collision acceptance, `82f8d4f8` removed every production
+parsed collision graph. Slice I7 passes 8,413 Release tests / 5 skips and both
+exact-binary connected lifecycle/reconnect and nine-stop routes; parsed graph
+residency is `0/0/0` at every stable checkpoint and teardown converges. Slice I
+is complete. Slice J0 established and enforced the presentation-independent
+`AcDream.Runtime` boundary without moving behavior; J1 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).
 The historical exact G4 visual rollback remains
 `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`.
 
diff --git a/docs/plans/2026-07-24-modern-runtime-architecture.md b/docs/plans/2026-07-24-modern-runtime-architecture.md
index 029e850c..fe65880b 100644
--- a/docs/plans/2026-07-24-modern-runtime-architecture.md
+++ b/docs/plans/2026-07-24-modern-runtime-architecture.md
@@ -2,11 +2,11 @@
 
 **Date:** 2026-07-24
 
-**Status:** Slices A–H are complete. Slice I6's flat-authoritative production
-cutover is committed and awaits the final user collision/visual gate before
-parsed-graph deletion. Slices F–L were explicitly approved 2026-07-24. Slice
-J0's dependency-boundary preparation is complete without moving gameplay
-owners. J1 remains behind the I6/I7 user collision/visual closeout.
+**Status:** Slices A–I 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's dependency-boundary preparation is
+complete without moving gameplay owners; J1 is the active execution point.
 
 **Scope:** Reconcile and sequence the existing Modern Pipeline (`MP`) and
 Linux/headless (`LH`) tracks using the 2026-07-24 connected performance audit.
@@ -1240,8 +1240,12 @@ validated immutable flat collision records: synthetic and installed-DAT
 source identity, exact float bits, deterministic pre-order, and corruption
 tripwires pass without changing production traversal. I3 now packages all
 flat collision/topology records through a shared typed mmap source: two
-complete 2,232,170-key bakes are byte-identical with zero failures. I4 flat
-traversal shadow implementation is the current execution point.
+complete 2,232,170-key bakes are byte-identical with zero failures. I4–I6 then
+proved exact flat traversal, strict dual publication, and flat-authoritative
+gameplay before removing every production parsed collision graph. Slice I7
+passes 8,413 Release tests / 5 skips plus both exact-binary connected routes;
+every stable checkpoint reports zero retained parsed collision graphs. J1 is
+now the current execution point.
 Evidence:
 [`../research/2026-07-25-slice-g5-production-profile.md`](../research/2026-07-25-slice-g5-production-profile.md)
 and
@@ -1251,6 +1255,8 @@ and
 and
 [`../research/2026-07-25-slice-i3-prepared-collision-package.md`](../research/2026-07-25-slice-i3-prepared-collision-package.md)
 and
+[`../research/2026-07-25-slice-i7-closeout.md`](../research/2026-07-25-slice-i7-closeout.md)
+and
 [`2026-07-25-modern-runtime-slice-i.md`](2026-07-25-modern-runtime-slice-i.md).
 
 The intended order is therefore:
@@ -1264,8 +1270,8 @@ honest metrics + committed baselines        (A — exit criteria block C)
   -> incremental render scene               (F)
   -> delta GPU submission                   (G)
   -> residual frame cleanup                 (H-a, H-b, H-c)
-  -> flat collision assets                  (I — CURRENT at I4)
-  -> presentation-independent runtime       (J — §0.3 authorization)
+  -> flat collision assets                  (I — COMPLETE)
+  -> presentation-independent runtime       (J — CURRENT at J1)
   -> Linux/headless/multi-session           (K)
   -> evidence-gated GPU jobs                (L)
 ```
diff --git a/docs/plans/2026-07-25-modern-runtime-slice-i.md b/docs/plans/2026-07-25-modern-runtime-slice-i.md
index c548f02f..6be2ea9b 100644
--- a/docs/plans/2026-07-25-modern-runtime-slice-i.md
+++ b/docs/plans/2026-07-25-modern-runtime-slice-i.md
@@ -1,10 +1,10 @@
 # Modern runtime Slice I — flat collision assets and zero-allocation physics
 
-**Status:** I0-I5 COMPLETE - retail oracle, zero-allocation transition
+**Status:** I0–I7 COMPLETE — retail oracle, zero-allocation transition
 scratch, deterministic immutable collision records, complete prepared
-package, exact flat traversal, dual publication, and connected shadow gate;
-I6 production cutover, strict connected gate, and physical nine-stop soak
-complete; user collision/visual acceptance active before graph deletion
+package, exact flat traversal, dual publication, flat-authoritative production
+cutover, parsed-graph removal, connected correctness/lifetime acceptance, and
+documentation closeout
 **Parent:** `2026-07-24-modern-runtime-architecture.md`, Slice I
 **Purpose:** remove parsed DAT object graphs and steady collision allocations
 without changing one retail collision decision, float, comparison, or traversal
@@ -290,7 +290,20 @@ no automation oracle) sustained roughly 190–200 FPS with stable CPU p50
 ~5.0 ms / p95 ~5.9–7.3 ms and GPU p95 ~2.1 ms. Evidence:
 [`../research/2026-07-25-slice-i6-flat-production-cutover.md`](../research/2026-07-25-slice-i6-flat-production-cutover.md).
 
-Parsed-graph removal remains gated on the user correctness/visual pass.
+The user accepted the connected collision gate on 2026-07-25. Production
+parsed-graph removal then landed at
+`82f8d4f82e24ad85042ac3e25c4f6464bebce758`. The production
+`PhysicsDataCache`, stable `GpuWorldState`, near-build payloads, and live
+publication path now retain only immutable flat assets. Graph construction
+survives solely in explicit tests, bake/equivalence tools, and source-oracle
+constructors. The exact rollback for graph removal is:
+
+```text
+git revert 82f8d4f82e24ad85042ac3e25c4f6464bebce758
+```
+
+Do not revert I3–I6 unless evidence implicates the prepared package or
+flat-authoritative traversal itself.
 
 ### I7 — allocation, soak, and documentation closeout
 
@@ -314,6 +327,22 @@ Final gate:
 - connected portal/reconnect/interaction routes pass;
 - exact cutover rollback recorded before user verification.
 
+**Completed 2026-07-25.** Release build and the complete solution pass
+8,413 tests / 5 skips. The focused collision/door/doorway/cellar/ramp/jump/
+projectile/allocation gate passes 154 Core tests plus 47 App camera/projectile
+tests; player, grounded publication, remote, projectile, and camera resolves
+remain 0 B/resolve.
+
+The exact-binary connected lifecycle/reconnect route and canonical nine-stop
+R6 soak both pass with graceful exits. Every stable checkpoint reports
+`0/0/0` retained parsed GfxObj/Setup/cell graphs while flat GfxObj/Setup/cell
+residency remains populated. Movement, jump, combat, projectile, portal,
+dungeon, revisit, reconnect, publication, retirement, and teardown checks
+pass. The user accepted collision behavior over RDP. Absolute post-removal
+GPU/frame-time and ordinary-process memory comparison remains a physical-
+display measurement, not a Slice-I correctness blocker. Evidence:
+[`../research/2026-07-25-slice-i7-closeout.md`](../research/2026-07-25-slice-i7-closeout.md).
+
 ## 4. Commit order
 
 Each unit is independently buildable and reversible:
diff --git a/docs/plans/2026-07-25-modern-runtime-slice-j.md b/docs/plans/2026-07-25-modern-runtime-slice-j.md
index fa2faf46..d170a1c9 100644
--- a/docs/plans/2026-07-25-modern-runtime-slice-j.md
+++ b/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; J1 waits for the Slice I6/I7 user collision/visual closeout
+guards; Slice I is closed and J1 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
@@ -36,9 +36,10 @@ deletes the replaced App production path before the next group moves.
 9. A headless construction path is proved after every coherent move. “No
    window” means no App, Silk, OpenAL, retained UI, particle, or render assembly
    is loaded—not a hidden graphical process.
-10. The user collision/visual gate for Slice I6 still controls parsed-graph
-    deletion. J0 may land independently; gameplay-owner moves begin only after
-    the active I6/I7 closeout has reconciled the final collision owner shape.
+10. Slice I is closed: production collision is flat-authoritative and retains
+    no parsed collision graph. J1 contracts adapt that final canonical owner
+    shape; they may not reintroduce a graph fallback or mirrored collision
+    authority.
 
 ## 2. Target dependency direction
 
diff --git a/docs/research/2026-07-25-slice-i7-closeout.md b/docs/research/2026-07-25-slice-i7-closeout.md
new file mode 100644
index 00000000..f7b92dd1
--- /dev/null
+++ b/docs/research/2026-07-25-slice-i7-closeout.md
@@ -0,0 +1,121 @@
+# Slice I7 — flat collision closeout
+
+## Result
+
+Modern Runtime Slice I is complete. Production collision consumes the
+immutable prepared flat representation exclusively, per-resolve scratch is
+retained and reset-complete, and no parsed DAT collision graph remains in
+stable gameplay state.
+
+The two production cutover commits are:
+
+- flat-authoritative traversal:
+  `068a06518dd710ca5e7f166754cbb7789ca1ed0f`;
+- parsed-graph removal:
+  `82f8d4f82e24ad85042ac3e25c4f6464bebce758`.
+
+Exact rollback commands:
+
+```text
+git revert 82f8d4f82e24ad85042ac3e25c4f6464bebce758
+git revert 068a06518dd710ca5e7f166754cbb7789ca1ed0f
+```
+
+Revert graph removal first. Do not revert the I3 prepared-package, I4
+flat-traversal, or I5 publication work unless evidence implicates those
+layers.
+
+## Production ownership after removal
+
+- `PhysicsDataCache` publishes immutable flat GfxObj, Setup, CellStruct, and
+  EnvCell topology records directly.
+- Stable `GpuWorldState` strips temporary `PhysicsDatBundle` source material.
+- Near `LandblockBuild` payloads discard Environment/GfxObj raw collision
+  graphs after their immutable flat closure is built.
+- Live objects publish through the same strict prepared source.
+- Graph constructors remain only as explicit test, bake, and equivalence
+  oracles. Production has no graph fallback and no sampled referee.
+- The single validated `acdream.pak` mmap remains the production render and
+  collision source.
+
+This is a storage/ownership change only. Collision comparisons, traversal
+order, source float bits, retail thresholds, cell semantics, and authoritative
+game behavior did not change.
+
+The retail divergence register was audited. No row was added or retired:
+Slice I changes the representation and lifetime of already ported collision
+data without introducing a behavior deviation.
+
+## Automated evidence
+
+- Release build: pass with zero errors and zero warnings.
+- Complete Release solution: 8,413 passed / 5 skipped.
+- Focused Core collision, doors, doorway, cellar/ramp, jump, projectile, and
+  allocation gate: 154 passed.
+- Focused App camera/projectile gate: 47 passed.
+- Player, grounded walkable publication, remote, projectile, and camera
+  profiles: 0 B/resolve.
+- Direct flat `CellSurface`, walkable-plane, behaviorless-cell, stable-state
+  stripping, and production graph-residency fixtures pass.
+
+## Connected lifecycle/reconnect gate
+
+Report:
+`logs/connected-world-gate-20260725-182242/report.json` in the exact-binary
+gate worktree.
+
+- Source and binary:
+  `82f8d4f82e24ad85042ac3e25c4f6464bebce758`.
+- Result: PASS; two graceful exits; zero failures.
+- Six capped checkpoints plus one fresh-process uncapped reconnect passed.
+- Parsed collision graph counts were `0/0/0` at every checkpoint.
+- Flat GfxObj/Setup/cell residency remained populated, including:
+  - capped login: `168/112/71`;
+  - Rynthid: `384/262/790`;
+  - Facility Hub: `436/272/279`;
+  - Holtburg after dungeon: `761/415/531`;
+  - fresh uncapped reconnect: `167/103/59`.
+- Publication, retirement, upload, warmup, and class backlogs converged.
+
+The 25 world-edge misses are the route's existing expected diagnostic, not a
+new collision failure.
+
+## Connected canonical nine-stop gate
+
+Report:
+`logs/connected-r6-soak-20260725-182823.report.json` in the exact-binary gate
+worktree.
+
+- Result: PASS; graceful exit; zero failures.
+- All nine portal checkpoints materialized and stabilized.
+- Parsed collision graph counts were `0/0/0` at all nine checkpoints.
+- Flat cell residency covered Caul, Sawato, Rynthid, Aerlinthe, and Holtburg,
+  including 790 cells at Rynthid and 531 at Holtburg.
+- Movement, jump/fall, combat/projectile, portal, dungeon, revisit, and
+  authoritative server-echo checks passed.
+- Final publication, retirement, worker, destination, control, unload,
+  near/far, staged-upload, and composite-warmup backlogs were zero.
+
+The known route warnings were limited to a Caul visible-workload delta of two,
+an eleven-particle plateau delta, 32 optional missing-DAT VFX diagnostics, and
+the 25 expected world-edge misses.
+
+## Measurement boundary
+
+The user accepted collision correctness under RDP. The RDP nine-stop route
+also showed a bounded final plateau near 1.93 GiB working set while carrying
+observer/automation state, below the earlier dual-representation diagnostic
+route's roughly 2.06 GiB final Caul working set. Those are not controlled
+ordinary-client measurements, so no exact performance percentage is claimed.
+
+Absolute post-removal CPU, GPU, frame-time, and ordinary-process memory
+comparison remains deferred to the next physical-display performance pass.
+That deferral does not weaken the deterministic, connected, ownership, or
+resource-lifetime acceptance above.
+
+## Next execution point
+
+Slice J1 begins the borrowed-view, typed-command, ordered-event, clock, and
+lifecycle contract layer in `AcDream.Runtime`. It must adapt the current
+canonical owners first; it may not create a second gameplay world or add a
+frame of graphical input latency.