docs: reconcile project state and refresh README

docs/plans/2026-07-24-modern-runtime-architecture.md

@@ -2,33 +2,24 @@
 
 **Date:** 2026-07-24
 
-**Status:** Slices A–I and J0–J5 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–J1 established the enforced Runtime
-boundary and borrowed contract seam; J2 moved canonical session/transport
-lifetime and ordered inbound routing; J3.1–J3.6 moved canonical entity identity
-and object-table lifetime to Runtime, exact graphical projection identity to
-App, and one ordered canonical entity/object stream plus direct views to all
-hosts and closed the failure-safe owner ledger. J4.1 moved communication and
-social ownership into Runtime at `c9d25ade`; J4.2 moved inventory transaction
-ownership into Runtime at `011efbea`; J4.3 moved the coupled magic/player-sheet
-owner into Runtime at `d02a12ce`; J4.4 moved character settings/projections
-and the shared typed state-command seam at `dcb61efb`; J4.5 closed canonical
-gameplay-state ownership at `89e6b207`. J5 movement, physics, interaction,
-and combat ownership closed at `cdee7a4b` after canonical action state
-(`b298f99f`), interaction transactions (`f5f7b417`), and combat/magic intent
-(`20df9d15`), local movement/outbound cadence (`aa3f4a60`), and per-session
-physics/remote simulation (`7e6033d0`), projectile simulation (`2aee3356`),
-and the combined simulation ledger/Runtime-only closeout moved to Runtime.
-J6 completed at `18d17d8b`: Runtime owns world environment, canonical reveal
-generation/readiness, exact F751/Position destination correlation, and the
-generation/cell-scoped graphical-host acknowledgement suffix. J7 completed
-at `ce41efb9` with its automated gates and the user's 2026-07-27
-physical-display acceptance. J8 and Slice J closed at `a9a822f2`: graphical
-and direct hosts share one `GameRuntime`, one retryable generation-reset
-transaction, and one canonical gameplay-owner graph. Slice K is active; K0
-established the tested Windows/Linux headless boundary at `aada8a37`.
+**Status:** Slices A–K are complete. Slice L is deferred at its L1
+implementation checkpoint by user direction on 2026-07-27.
+Flat-authoritative collision, zero-allocation resolve scratch, parsed-graph
+removal, prepared content, typed residency, retained render-scene submission,
+and bounded frame owners are production paths. Slice J closed at `a9a822f2`:
+graphical and direct hosts share one presentation-independent `GameRuntime`,
+one retryable generation-reset transaction, and one canonical session/entity/
+object/gameplay/movement/physics/projectile/environment/transit owner graph.
+Slice K closed through `776482da`: the Windows/Linux no-window host, shared
+immutable content, deterministic bot API/scheduler, 1/5/10/30-session
+isolation, two-hour simulated endurance, connected portal/movement parity,
+resource ceilings, graceful reconnect/logout, and zero-debt teardown pass.
+Slice L0 landed at `66f114b2`; L1's immutable Win32/X11/Wayland selection,
+packaged GLFW 3.4 preference, atomic capability record, active modern-GL
+probes, and safe terminal reporting landed at `11501d52`. Native Windows AMD
+passes. WSLg correctly rejects its missing mandatory bindless-texture
+capability. Physical-Linux validation and L2–L6 are parked; resume at the
+supported AMD/NVIDIA L1 gate.
 
 **Scope:** Reconcile and sequence the existing Modern Pipeline (`MP`) and
 Linux/headless (`LH`) tracks using the 2026-07-24 connected performance audit.
@@ -1065,6 +1056,9 @@ host-parity tests after each move.
 
 ### Slice K — Linux headless and multi-session host
 
+**Status:** complete through `776482da`; closeout is
+[`2026-07-26-modern-runtime-slice-k.md`](2026-07-26-modern-runtime-slice-k.md).
+
 **Prepared execution plan:**
 [`2026-07-26-modern-runtime-slice-k.md`](2026-07-26-modern-runtime-slice-k.md).
 Implementation began after Slice J's no-window closeout at `a9a822f2`.
@@ -1100,9 +1094,14 @@ per-session incremental memory given a numeric ceiling at gate time.
 
 ### Slice L — Linux graphical host and evidence-gated GPU work
 
+**Status:** deferred 2026-07-27. L0 is complete at `66f114b2`; the L1
+implementation checkpoint is `11501d52`. Physical supported-driver validation
+and L2–L6 remain pending.
+
 **Prepared execution plan:**
 [`2026-07-26-modern-runtime-slice-l.md`](2026-07-26-modern-runtime-slice-l.md).
-Implementation begins after Slice K closes.
+Implementation began after Slice K closed and is parked at the recorded L1
+gate.
 
 **Purpose:** Finish platform portability and only then pursue remaining GPU
 opportunities.
@@ -1309,10 +1308,20 @@ at every stable checkpoint. J7 completed at `ce41efb9`, and the user accepted
 its exact post-cutover visual matrix on 2026-07-27. J8 closed Slice J at
 `a9a822f2`; 395 Runtime tests, 3,731 App tests / 3 skips, 8,696 complete-
 solution tests / 5 skips, lifecycle/reconnect, and canonical nine-stop gates
-pass. Slice K is the current execution point.
-K0 completed at `aada8a37`: the no-App Windows/Ubuntu closure, strict
-no-connect validator, dependency/assembly guards, Release build, 8,708-test /
-5-skip complete suite, and local Ubuntu gates pass. K1 is active.
+pass. Slice K closed through `776482da`. K0 established the no-App
+Windows/Ubuntu dependency and loaded-assembly boundary; K1 added portable
+paths/config/credentials and the direct Runtime host; K2 added the
+deterministic scheduler and complete bot command/event API; K3 added shared
+immutable content plus multi-session isolation and connected observer parity;
+K4 added committed resource ceilings, 1/5/10/30-root and two-hour simulated
+endurance gates, and the ten-minute two-account native-Linux connected soak.
+That final process logged both accounts out through ACE and converged every
+Runtime/content ledger. Slice L0 then completed at `66f114b2`, and L1's
+implementation checkpoint landed at `11501d52`. App passes 3,763 / 3 skips
+and the complete Release suite passes 8,826 / 5 skips. Native Windows passes
+the packaged graphical/audio smoke; WSLg X11/Wayland correctly emit the
+actionable mandatory-bindless rejection with zero terminal ownership. Further
+Linux graphical work is deferred at the physical supported-driver L1 gate.
 Evidence:
 [`../research/2026-07-25-slice-g5-production-profile.md`](../research/2026-07-25-slice-g5-production-profile.md)
 and
@@ -1338,7 +1347,15 @@ and
 and
 [`../research/2026-07-26-slice-j5-7-simulation-ownership-closeout.md`](../research/2026-07-26-slice-j5-7-simulation-ownership-closeout.md)
 and
-[`2026-07-25-modern-runtime-slice-j.md`](2026-07-25-modern-runtime-slice-j.md).
+[`2026-07-25-modern-runtime-slice-j.md`](2026-07-25-modern-runtime-slice-j.md)
+and
+[`../research/2026-07-27-slice-k4-resource-telemetry-checkpoint.md`](../research/2026-07-27-slice-k4-resource-telemetry-checkpoint.md)
+and
+[`2026-07-26-modern-runtime-slice-k.md`](2026-07-26-modern-runtime-slice-k.md)
+and
+[`../research/2026-07-27-slice-l0-platform-services.md`](../research/2026-07-27-slice-l0-platform-services.md)
+and
+[`../research/2026-07-27-slice-l1-graphical-capability-checkpoint.md`](../research/2026-07-27-slice-l1-graphical-capability-checkpoint.md).
 
 The intended order is therefore:
 
@@ -1352,9 +1369,9 @@ honest metrics + committed baselines        (A — exit criteria block C)
   -> delta GPU submission                   (G)
   -> residual frame cleanup                 (H-a, H-b, H-c)
   -> flat collision assets                  (I — COMPLETE)
-  -> presentation-independent runtime       (J — CURRENT at J5)
-  -> Linux/headless/multi-session           (K)
-  -> evidence-gated GPU jobs                (L)
+  -> presentation-independent runtime       (J — COMPLETE)
+  -> Linux/headless/multi-session           (K — COMPLETE)
+  -> Linux graphical / GPU evidence         (L — DEFERRED at L1)
 ```
 
 This order improves the current graphical client first while laying clean