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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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touch added
Server contract (pimpl, create/run/dispatch/terminate) over a faithful
tinywl 0.20.1 port: outputs via wlr_scene, xdg-shell toplevels+popups,
focus, interactive move/resize, keyboard/pointer through wlr_cursor — plus
touch (down/up/motion/cancel/frame via seat notifies with per-point origin
tracking), which tinywl lacks. RAII Listener replaces manual wl_list_remove
bookkeeping; shutdown ordering documented in kernel.md. xkbcommon added as
a system dep. Verified: nested under labwc (output WL-1, foot mapped and
focused on GLES2) and a headless+pixman boot test in the kernel suite.
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