feat(images): Delete… in the Images selection bar, inspector and viewer (#480)

The concept's Remove links… place, D159: one review per selection that asks
each time (nothing preselected) whether to remove the files from the library
only or also move them to the trash. The browser test server uses a fake
trash.

tests/browser/server.py

@@ -220,6 +220,12 @@ def create_app(root: Path) -> web.Application:
     PromptManagerConfig.DEFAULT_DB_PATH = str(root / "browser.db")
     GalleryConfig.MONITORING_DIRECTORIES = [str(root / "output"), str(root / "input")]
 
+    # #480: Delete… never reaches a real system trash from a page test; the fake
+    # renames into this server's root, which goes when the server exits.
+    from tests import fake_trash
+
+    fake_trash.install(root / "fake-trash")
+
     from py.api import PromptManagerAPI
     from py import autotag
     from utils.hashing import generate_prompt_hash