Improve pending QR recovery and dashboard sizing

app.py

@@ -6620,11 +6620,11 @@ with gr.Blocks(delete_cache=(3600, 3600)) as demo:
             my_qr_gallery = gr.Gallery(
                 label="My QR Generations",
                 value=[],
-                columns=3,
+                columns=4,
                 rows=2,
-                height="auto",
-                allow_preview=True,
-                object_fit="cover",
+                height=260,
+                allow_preview=False,
+                object_fit="contain",
                 show_download_button=False,
             )
             with gr.Row():
@@ -6633,6 +6633,9 @@ with gr.Blocks(delete_cache=(3600, 3600)) as demo:
                         label="Selected QR",
                         visible=True,
                         interactive=False,
+                        height=360,
+                        width=360,
+                        show_download_button=False,
                     )
                 with gr.Column(scale=1):
                     my_qr_detail_markdown = gr.Markdown(

hf_dashboard.py

@@ -226,6 +226,23 @@ def _build_anon_id(request: Any | None, source: str = "ui", fallback: str = "ano
     return hashlib.sha256(raw.encode("utf-8")).hexdigest()[:24]
 
 
+def _build_browser_fingerprint(request: Any | None, source: str = "ui") -> str | None:
+    if request is None:
+        return None
+    headers = _request_headers(request)
+    raw = "|".join(
+        [
+            source or "unknown",
+            str(headers.get("x-forwarded-for", "")),
+            str(headers.get("user-agent", "")),
+            str(headers.get("accept-language", "")),
+        ]
+    )
+    if raw.count("|") == 3 and all(not part for part in raw.split("|")): 
+        return None
+    return hashlib.sha256(raw.encode("utf-8")).hexdigest()[:24]
+
+
 def get_current_user_context(request: Any | None) -> dict[str, Any] | None:
     oauth_info = _session_oauth_info(request)
     raw_userinfo = oauth_info.get("userinfo")
@@ -391,6 +408,22 @@ def _claim_anonymous_generations(request: Any | None, app_user_id: str) -> int:
             total += len([row for row in rows if str(row.get("id") or "") not in claimed_ids])
         else:
             total += len(rows)
+        claimed_ids.update(str(row.get("id") or "") for row in rows)
+
+    browser_fingerprint = _build_browser_fingerprint(request)
+    if browser_fingerprint:
+        rows = _patch_rows(
+            "generations",
+            filters=(
+                f"metadata->pending_claim->>browser_fingerprint=eq.{_quote_filter(browser_fingerprint)}"
+                "&app_user_id=is.null"
+            ),
+            values={
+                "app_user_id": app_user_id,
+                "updated_at": now_iso,
+            },
+        )
+        total += len([row for row in rows if str(row.get("id") or "") not in claimed_ids])
 
     return total
 
@@ -459,6 +492,7 @@ def persist_generation(
         metadata["pending_claim"] = {
             "anon_id": anon_id,
             "session_hash": str(getattr(request, "session_hash", "") or "") or None,
+            "browser_fingerprint": _build_browser_fingerprint(request),
         }
 
     row = {
@@ -494,13 +528,21 @@ def list_my_generations(request: Any | None) -> dict[str, Any]:
     user = ensure_app_user_for_request(request)
     if user is None:
         session_hash = str(getattr(request, "session_hash", "") or "").strip() if request is not None else ""
+        browser_fingerprint = _build_browser_fingerprint(request)
         pending_rows: list[dict[str, Any]] = []
+        pending_filters = ["app_user_id=is.null"]
         if session_hash:
+            pending_filters.append(f"metadata->pending_claim->>session_hash=eq.{_quote_filter(session_hash)}")
+        if browser_fingerprint:
+            pending_filters.append(
+                f"metadata->pending_claim->>browser_fingerprint=eq.{_quote_filter(browser_fingerprint)}"
+            )
+        if len(pending_filters) > 1:
             pending_query = (
                 "select=id,created_at,updated_at,status,input_type,qr_mode,prompt,destination_url_original,destination_url_normalized,"
                 "effective_qr_text,shortener_applied,short_link_id,short_code,short_url,shortener_expires_at,completed_image_url,thumbnail_url,metadata"
+                f"&or=({','.join(pending_filters[1:])})"
                 "&app_user_id=is.null"
-                f"&metadata->pending_claim->>session_hash=eq.{_quote_filter(session_hash)}"
                 "&order=created_at.desc"
             )
             pending_rows = _table_select("dashboard_generation_summaries", query=pending_query)