feat(ui): add the tested opt-in Prompt Manager workspace shell (#198)

* docs(ui): prototype unified prompt management application

* docs(ui): add masonry and per-image tagging to application concept

* docs(ui): make gallery concept use continuous infinite scrolling

* feat(ui): introduce the tested application workspace shell

* fix(docs): preserve concept controls across cached navigation

* test(ci): emit Python tracebacks for native test crashes

* test(ui): cover workspace restoration across cached navigation

.github/workflows/test.yml

@@ -9,6 +9,9 @@ on:
   push:
     branches: [main]
 
+env:
+  PYTHONFAULTHANDLER: "1"
+
 jobs:
   test:
     name: py${{ matrix.python-version }} on ${{ matrix.os }}