docs(linux): park Slice L at L1 checkpoint
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# acdream — strategic roadmap
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**Status:** Living document. Updated 2026-07-27. **M3 landed; M4 is active.** M3's retail casting/UI, R6 locomotion/collision/projectile/teleport/radar rebaseline, deterministic fresh-login/portal world lifecycle, and final two-client portal observer flow are user-gated. All eight slices of the behavior-preserving ownership campaign in [`docs/architecture/code-structure.md`](../architecture/code-structure.md), their automated closeout, and the user's connected visual matrix are complete. Modern Runtime J3 canonical entity/object lifetime and J4 gameplay-state ownership are closed at `89e6b207`; J5.1 canonical selection/combat/target-mode ownership is closed at `b298f99f`, J5.2 interaction transactions at `f5f7b417`, J5.3 combat/magic intent at `20df9d15`, J5.4 local movement/outbound cadence at `aa3f4a60`, J5.5 per-session physics/remote simulation at `7e6033d0`, J5.6 projectile simulation at `2aee3356`, and J5.7 combined simulation closeout at `cdee7a4b`. J6.1 world-environment ownership is closed at `902076c0`; J6.2 canonical reveal generation and typed destination readiness is closed at `a6860d55` plus `acb845d8`; J6.3 exact F751/Position destination correlation is closed at `6a063a27`; J6.4 exact graphical-host acknowledgement and owner cleanup is closed at `18d17d8b`. J7's one graphical `GameRuntime` root is closed at `ce41efb9`, including the user's 2026-07-27 exact post-cutover visual acceptance. J8 closed Slice J at `a9a822f2` with one shared graphical/no-window root and generation-reset transaction. Slice K Linux headless/multi-session work is closed. K0's tested no-presentation Windows/Linux boundary closed at `aada8a37`, K1's portable single-session host at `f8cb840f`, K2's deterministic scheduler and shared bot API at `7e8acb74` plus `38e83640`, and K3's shared-content/isolation plus connected observer gate at `3f340125`. K4 closed through `776482da`: 1/5/10/30-root isolation and two-hour simulated endurance, death/randomized cancellation, committed resource ceilings, ten minutes of exact native Linux two-account connected sampling, ACE-confirmed graceful logout, and zero-debt Runtime/content convergence all pass. Slice L Linux graphical/platform work is active. Issue #225's lifestone/particle alpha comparison remains a separate rendering visual gate.
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**Status:** Living document. Updated 2026-07-27. **M3 landed; M4 is active.** M3's retail casting/UI, R6 locomotion/collision/projectile/teleport/radar rebaseline, deterministic fresh-login/portal world lifecycle, and final two-client portal observer flow are user-gated. All eight slices of the behavior-preserving ownership campaign in [`docs/architecture/code-structure.md`](../architecture/code-structure.md), their automated closeout, and the user's connected visual matrix are complete. Modern Runtime J3 canonical entity/object lifetime and J4 gameplay-state ownership are closed at `89e6b207`; J5.1 canonical selection/combat/target-mode ownership is closed at `b298f99f`, J5.2 interaction transactions at `f5f7b417`, J5.3 combat/magic intent at `20df9d15`, J5.4 local movement/outbound cadence at `aa3f4a60`, J5.5 per-session physics/remote simulation at `7e6033d0`, J5.6 projectile simulation at `2aee3356`, and J5.7 combined simulation closeout at `cdee7a4b`. J6.1 world-environment ownership is closed at `902076c0`; J6.2 canonical reveal generation and typed destination readiness is closed at `a6860d55` plus `acb845d8`; J6.3 exact F751/Position destination correlation is closed at `6a063a27`; J6.4 exact graphical-host acknowledgement and owner cleanup is closed at `18d17d8b`. J7's one graphical `GameRuntime` root is closed at `ce41efb9`, including the user's 2026-07-27 exact post-cutover visual acceptance. J8 closed Slice J at `a9a822f2` with one shared graphical/no-window root and generation-reset transaction. Slice K Linux headless/multi-session work is closed. K0's tested no-presentation Windows/Linux boundary closed at `aada8a37`, K1's portable single-session host at `f8cb840f`, K2's deterministic scheduler and shared bot API at `7e8acb74` plus `38e83640`, and K3's shared-content/isolation plus connected observer gate at `3f340125`. K4 closed through `776482da`: 1/5/10/30-root isolation and two-hour simulated endurance, death/randomized cancellation, committed resource ceilings, ten minutes of exact native Linux two-account connected sampling, ACE-confirmed graceful logout, and zero-debt Runtime/content convergence all pass. Slice L Linux graphical/platform work is parked at its L1 implementation checkpoint by user direction on 2026-07-27. Issue #225's lifestone/particle alpha comparison remains a separate rendering visual gate.
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**Purpose:** One source of truth for where the project is and where it's going. Every observed defect or missing feature has a named phase that owns it; when something looks wrong in-game, look here to find the phase that'll address it. Implementation details live in per-phase specs under `docs/superpowers/specs/`, not in this file.
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**Slice L checkpoint:** L0 closed at `66f114b2` with one typed graphical
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platform/native manifest, shared XDG/Windows paths, factory-selected
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Windows/Linux frame waits, portable persistence/plugin discovery, RID-safe
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App publish, and an Ubuntu graphical CI/package gate. Slice L1
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context/extension/native-backend validation is active.
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App publish, and an Ubuntu graphical CI/package gate. L1's implementation
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checkpoint landed at `11501d52`: immutable Win32/X11/Wayland selection,
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packaged GLFW 3.4 preference, atomic capability reporting, and active modern-GL
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probes gate renderer construction. Native Windows passes. WSLg X11/Wayland
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correctly report that Mesa D3D12/llvmpipe lacks mandatory bindless textures.
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A supported physical Linux AMD/NVIDIA driver row remains the first gate when
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Slice L resumes; the physical gate and L2–L6 are deferred.
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---
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@ -1822,7 +1827,11 @@ port in any phase — no separate listing here.
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> Headless tests pass 67/67 and the complete Release suite passes 8,784 / 5
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> skips. The exact two-account connected soak then passed 20 periodic samples,
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> ACE-confirmed graceful logout, and a zero-debt `disposed` record. Slice K is
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> closed. Slice L0 completed at `66f114b2`; L1 is active.
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> closed. Slice L0 completed at `66f114b2`; L1's implementation checkpoint
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> landed at `11501d52`. Native Windows passes every active capability and
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> shutdown probe; WSLg X11/Wayland correctly fail the mandatory bindless
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> requirement. By user direction on 2026-07-27, the supported physical Linux
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> driver row and L2–L6 are deferred; resume at that physical gate.
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> The historical exact cutover
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> rollback remains
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> `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`. Slice H is complete:
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@ -1869,7 +1878,11 @@ hitch and follows.
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> no-window Linux host and approximately 30-session target from
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> [`2026-07-26-modern-runtime-slice-k.md`](2026-07-26-modern-runtime-slice-k.md);
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> Slice L executes the graphical Linux/platform work. K0-K4 and Slice K are
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> complete through `776482da`. L0 is complete at `66f114b2`; L1 is active.
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> complete through `776482da`. L0 is complete at `66f114b2`; L1's
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> implementation checkpoint is `11501d52`, with native Windows positive and
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> WSLg X11/Wayland negative capability rows recorded. A supported physical
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> Linux AMD/NVIDIA row and L2–L6 are deferred by user direction; resume at the
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> physical L1 gate.
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> K's automated 1/5/10/30-root
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> isolation, two-hour simulated endurance, death/cancellation, and committed
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> resource-envelope gates pass; the exact two-account connected process added
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@ -316,7 +316,8 @@ residency is `0/0/0` at every stable checkpoint and teardown converges. Slice I
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dimension inside its ceiling. SIGINT then produced ACE-confirmed graceful
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logout for both accounts and a passing `disposed` record with two converged
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Runtime roots, zero entities/inventory/host/content leases, and disposed
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shared content. K4 and Slice K are closed; Slice L is active.
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shared content. K4 and Slice K are closed; Slice L is parked at its L1
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implementation checkpoint by user direction on 2026-07-27.
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L0 completed at `66f114b2`: one startup-owned graphical platform/native
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manifest, the shared Runtime XDG/Windows path set, factory-selected Windows
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and absolute-monotonic Linux frame waits, portable settings/keybindings/
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@ -325,8 +326,17 @@ residency is `0/0/0` at every stable checkpoint and teardown converges. Slice I
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3,736 App tests / 3 skips; the complete Release suite passes 8,799 / 5
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skips. Native Ubuntu passes the portable Runtime/Headless/UI and 14 L0 App
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tests, and the exact `linux-x64` package contains resolved GLFW, OpenAL
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Soft, cimgui, shaders, and smoke plugin. Slice L1 context/extension/native-
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backend validation is next.
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Soft, cimgui, shaders, and smoke plugin. Slice L1's implementation checkpoint
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landed at `11501d52`: immutable Win32/X11/Wayland backend selection,
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packaged GLFW 3.4 preference, atomic capability reporting, and active
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bindless/draw-parameters/MDI/SSBO/timer/FBO/persistent-buffer probes now
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reject unsupported contexts before renderer construction. The native
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Windows AMD gate passes all probes and completes graphical/audio teardown;
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WSLg X11 and Wayland correctly reject its Mesa D3D12/llvmpipe contexts
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because `GL_ARB_bindless_texture` is absent. App tests pass 3,763 / 3 skips
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and the complete Release suite passes 8,826 / 5 skips. A supported physical
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Linux AMD/NVIDIA driver row remains mandatory when Slice L resumes; its
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physical gate and L2–L6 are deferred.
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Slice-I closeout evidence is
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[`../research/2026-07-25-slice-i7-closeout.md`](../research/2026-07-25-slice-i7-closeout.md).
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Slice-J2 closeout evidence is
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@ -1,6 +1,7 @@
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# Modern runtime Slice L — Linux graphical host and evidence-gated GPU work
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**Status:** ACTIVE — L0 COMPLETE; L1 NEXT
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**Status:** DEFERRED 2026-07-27 — L0 COMPLETE; L1 IMPLEMENTATION CHECKPOINT
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COMPLETE; PHYSICAL-LINUX DRIVER GATE AND L2–L6 PARKED
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**Parent:** `2026-07-24-modern-runtime-architecture.md`, Slice L
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**Authorization:** the user approved Slices F–L on 2026-07-24
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**Purpose:** ship the existing modern OpenGL client on supported Linux drivers
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@ -177,6 +178,18 @@ frame waiters and portable paths; no Windows P/Invoke executes on Linux.
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### L1 — context, extensions, and native backends
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**Implementation checkpoint at `11501d52` (2026-07-27).** The exact packaged
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GLFW 3.4 backend is selected before window creation; X11/Wayland choice,
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complete passive capabilities, active modern-GL calls, optional OpenAL smoke,
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atomic reports, actionable exit 4, and zero-debt successful/rejected Studio
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shutdown are implemented. Windows AMD passes the supported smoke. WSLg X11,
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Wayland, and AMD D3D12 paths correctly reject only missing
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`GL_ARB_bindless_texture`. These are negative rows. At the user's direction on
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2026-07-27, physical Mesa/RadeonSI/NVIDIA supported-driver evidence and L2–L6
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are deferred; when Slice L resumes, that physical gate remains first and L2
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must not begin before it passes. Exact evidence is
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[`../research/2026-07-27-slice-l1-graphical-capability-checkpoint.md`](../research/2026-07-27-slice-l1-graphical-capability-checkpoint.md).
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- Create a Linux window and OpenGL 4.3 core context under X11 and Wayland.
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- Capture the full capability record before renderer construction.
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- Verify mandatory bindless and shader-draw-parameter calls, MDI, SSBOs,
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@ -304,3 +317,15 @@ exact `git revert <sha>` after each focused/Linux/Windows/connected/visual
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gate. GPU candidates each receive their own plan, commit, measurement, visual
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gate, and rollback; rejected experiments are reverted rather than hidden
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behind dormant alternate paths.
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L0 rollback:
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```text
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git revert 66f114b258c0c37b51a7c0e04ca0d6441f4b1699
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```
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L1 implementation-checkpoint rollback:
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```text
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git revert 11501d52cad942850d88f83490710faf1d5cdf28
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```
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