Photo upload gets a visible lifecycle

A phone photo is several MB — seconds of dead air in which the user
reasonably assumes it worked and moves on, losing the upload if they
navigate or lock the phone (exactly how a photo went missing today).
The dropzone now narrates: uploading with count and size ("keep this
page open"), a green ✓ naming each saved file, reverting after a few
seconds; failures keep their alert but also reset the zone. A
beforeunload guard makes the browser ask before abandoning an
in-flight upload, re-picking the same file re-fires, and the gallery
refresh is forced so the new photo appears immediately.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016jXZFSTZQKzAC8fqpWSz9g

data/titles.json

@@ -1693,5 +1693,18 @@
       "IMG_4573.jpeg"
     ],
     "title_normalized": "blackboa rd"
+  },
+  {
+    "title_raw": "...and then, we held hands.",
+    "confidence": "high",
+    "publisher_hint": "LudiCreations",
+    "edition_hint": "",
+    "year_hint": null,
+    "language_hint": "English",
+    "art_notes": "Blue sky background with white stylized doves/hands motif, cursive white title text",
+    "source_photos": [
+      "image.jpg"
+    ],
+    "title_normalized": "and then we held hands"
   }
 ]