Merge: touch selection and drag, from the gallery-selection branch

Verified before merge: fmt clean, clippy -D warnings clean, 563 dr-ui tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

# Conflicts:
#	docs/traceability.md

.gitea/workflows/build-and-test.yml

@@ -57,7 +57,7 @@ jobs:
 
       # The model, which is in LFS and is not optional.
       #
-      # `core/dr-segment/models/*.onnx` is tracked in LFS (.gitattributes), so a
+      # `models/**/*.onnx` is tracked in LFS (.gitattributes), so a
       # plain checkout writes a ~130-byte pointer where 11 MB should be, and
       # `dr-segment`'s build script panics by design rather than embedding a
       # pointer and failing at inference. That failure reads like a broken build
@@ -97,7 +97,7 @@ jobs:
           git config --local lfs.url \
             "https://x-access-token:${LFS_TOKEN}@gitea.tourolle.paris/dtourolle/DarkRoom.git/info/lfs"
           git lfs pull
-          ls -l core/dr-segment/models/
+          ls -lR models/
 
       - name: Cache cargo
         uses: actions/cache@v4
@@ -174,7 +174,7 @@ jobs:
 
       # The model, which is in LFS and is not optional.
       #
-      # `core/dr-segment/models/*.onnx` is tracked in LFS (.gitattributes), so a
+      # `models/**/*.onnx` is tracked in LFS (.gitattributes), so a
       # plain checkout writes a ~130-byte pointer where 11 MB should be, and
       # `dr-segment`'s build script panics by design rather than embedding a
       # pointer and failing at inference. That failure reads like a broken build
@@ -214,7 +214,7 @@ jobs:
           git config --local lfs.url \
             "https://x-access-token:${LFS_TOKEN}@gitea.tourolle.paris/dtourolle/DarkRoom.git/info/lfs"
           git lfs pull
-          ls -l core/dr-segment/models/
+          ls -lR models/
 
       - name: Cache cargo
         uses: actions/cache@v4