The per-crate *_TRACE / *_DEBUG / *_DUMP environment switches in
platform, widgets and cef become topics of one process-wide set:
startup, frame, present, timer, studio, gpu.*, shader.*, gl.*,
runview.dpi, wayland, tweak, map.*, cef. Hierarchical matching with
negation and all; read once at init; settable on a running instance
through GET /trace?topics=…; an atomic short-circuit keeps the
no-tracing case off the lock in per-frame code; spans are absent on
wasm32 where Instant panics.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Squashed from work; the fine-grained history is under tag archive/work-2026-08-26:
- vj: the thumbnail pipeline becomes one honest machine, and effects go livecodable
- widgets: boxed labels center on their ink, not on the font's line box
- metal: a fresh texture forgets nothing it never had — reallocated vec textures upload whole
- fab: a 3D creation shell and the viewer built on it
- texcomp: the block codec and the container every texture will travel in
- mixer: a live LR-Mix surface for the XR18 — strips paired the way the desk is run, auto-connect, EQ that bends its own curve, and a sweep paced so the console drops nothing
