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The ui substrate is now the extension-facing contract (unbox/kernel/ui.hpp):
Host::ui() -> UiSubstrate::create_surface(spec) -> UiSurface with typed
scalar bindings (int/double/bool/string getters), data-event callbacks
(error-isolated per extension), dirty(), geometry/visibility — RMLUi and
GL stay kernel-private. Production sync: glFinish replaced by
EGL_KHR_fence_sync + 2-deep wlr_swapchain. ui_spike retired (orientation
guard + dirty-cycle coverage live on as substrate tests).
Input: ONE kernel routing path feeds pointer AND touch into ui surfaces
with consume-or-pass semantics and implicit-grab ownership (the consumer
of a press owns the matching release; per touch point too) — fixes
drag-release-over-ui sticking. touch-mode: state machine + debounce +
on_touch_mode_changed notification, NO visual scaling (user decision
after hardware hands-on; dp-ratio stays 1.0; see plan §2).
ext-xdg-shell: GrabMachine generalized to pointer-OR-touch interaction
source (touch titlebar drag works; originating-point pinning); fixed the
seat implicit-grab leak (suppressed release after forwarded press
swallowed all later touch-downs — pointer/touch alternation doctested);
factory renamed create(). ext-layer-shell: on_demand keyboard
interactivity via scene hit resolution. host-bin: --ui-demo extension
(temporary acceptance demo on the public contract, dies in slice 6).
User hands-on verified: same surface by mouse and finger, tap counter,
touch-mode neutrality, no click-through, drag alternation, fuzzel
on_demand. 113 doctest cases green, ASan/UBSan clean (our code), idle
RSS ≈78 MiB. Harness: UX-feel hands-on lesson (ORCHESTRATOR §2.6),
nested-run pkill/setsid notes, touch-mode glossary redefinition.
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extensions
The kernel now names NO concrete feature. It owns: the extension host
(install/topological activate, missing-dep/cycle = startup error), the
typed Event/Filter bus (error-isolated: a throwing extension is disabled,
never the session; RAII Subscriptions), the Host API (per-extension
facade: borrows, scene layers, event catalogue, typed services), the
public RAII Listener, and a typed surface→scene-tree registry
(Host::host_surface/scene_tree_for) that replaced the untyped
wlr_surface.data convention both extensions flagged.
- ext-xdg-shell (core): toplevel/popup lifecycle, focus-on-map,
click/tap-to-focus, pointer/touch routing incl. button+axis (the
kernel only moves the cursor and emits — a contract-doc lie caught by
user hands-on), interactive move/resize via pure GrabMachine (fixes
the request-arrives-after-release race: grab requires request ∧
button-down, release always ends it), Alt+F1 cycle,
Ctrl+Alt+Backspace terminate (labwc's default A-Escape=Exit killed
the dev session once — never again; see nested-run skill).
- ext-layer-shell (core): wlr-layer-shell v1 (proto v5) for external
clients; pure doctest-hard arrangement core; fuzzel verified visually
nested (fix: seed outputs from output_layout at activate — events-only
tracking missed pre-activation outputs; plus a scene-node double-free).
- First protocol codegen: vendored wlr-layer-shell XML + wayland-scanner
server-header propagated through kernel_dep; wlr.hpp grew a
namespace→_namespace keyword fix for the generated header.
- Glossary: 'scene layer' (user-approved). New rules earned:
parallel-wave-builds, contract-docs.
- User hands-on verified: typing, click-to-focus, drag-select, scroll,
titlebar drag-move (slow + flick), Alt+F1, fuzzel + arrows, touch tap,
Ctrl+Alt+Backspace. 68 doctest cases green, ASan/UBSan clean (our
code), idle RSS ≈73 MiB.
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