Merge master into partial-preset-scope

# Conflicts:
#	docs/traceability.md
#	ui/dr-ui/ui/app.slint

core/dr-pipeline/src/graph.rs

@@ -1,3 +1,4 @@
+//! TRACES: FR-DEV-1
 //! The edit graph — an ordered set of operations (ARCH §3.4).
 //!
 //! CPU-side state, deliberately. The GPU device can be lost and rebuilt at any

core/dr-pipeline/src/lib.rs

@@ -1,3 +1,4 @@
+//! TRACES: R3
 //! The develop pipeline — operations, descriptors, and shader composition.
 //!
 //! # What this crate is

core/dr-pipeline/src/sidecar.rs

@@ -1,3 +1,4 @@
+//! TRACES: FR-DEV-1
 //! Sidecar serialisation — the edit graph as durable, mergeable data.
 //!
 //! # Generic, for the same reason the UI is generic