fix(urls): move static-prefix routes before dynamic <str:uid>/ pattern

Relocate `search/`, `concepts/`, and `concepts/<str:uid>/` URL patterns
to appear before the `<str:uid>/` catch-all route, preventing Django
from incorrectly matching those static prefixes as library UIDs.

mnemosyne/library/urls.py

@@ -17,6 +17,12 @@ urlpatterns = [
     # Library CRUD
     path("", views.library_list, name="library-list"),
     path("create/", views.library_create, name="library-create"),
+    # Static-prefix routes must come before <str:uid>/ or it will swallow them.
+    # Search (Phase 3)
+    path("search/", views.search_page, name="search"),
+    # Concepts (Phase 3)
+    path("concepts/", views.concept_list_page, name="concept-list"),
+    path("concepts/<str:uid>/", views.concept_detail_page, name="concept-detail"),
     path("<str:uid>/", views.library_detail, name="library-detail"),
     path("<str:uid>/search/", views.library_search, name="library-search"),
     path("<str:uid>/edit/", views.library_edit, name="library-edit"),
@@ -55,11 +61,6 @@ urlpatterns = [
     path("items/<str:uid>/delete/", views.item_delete, name="item-delete"),
     # Image views
     path("images/<str:uid>/view/", views.image_serve, name="image-serve"),
-    # Search (Phase 3)
-    path("search/", views.search_page, name="search"),
-    # Concepts (Phase 3)
-    path("concepts/", views.concept_list_page, name="concept-list"),
-    path("concepts/<str:uid>/", views.concept_detail_page, name="concept-detail"),
     # DRF API
     path("api/", include("library.api.urls")),
 ]