feat(core,fuse,gui): show a sync issue on its node in the file browser

A refused change was only on the Sync page. A folder listing now carries
each node's issue (by local id, so a file not yet on Drive has it too),
and the browser's badge ranks it first, folders included, with the
issue's explanation as its tooltip. The event sampler publishes Files
when the set of issues changes, so the badge comes and goes with it.

po/fr.po

@@ -5,7 +5,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: proton-drive-linux 2.1.0\n"
 "Report-Msgid-Bugs-To: https://github.com/narrrl/proton-drive-linux/issues\n"
-"POT-Creation-Date: 2026-10-05 00:50+0200\n"
+"POT-Creation-Date: 2026-10-05 01:01+0200\n"
 "PO-Revision-Date: 2026-09-23 12:00+0200\n"
 "Last-Translator: Proton Drive for Linux contributors\n"
 "Language-Team: French\n"
@@ -514,8 +514,8 @@ msgstr "Options d’affichage"
 #: crates/pdfs-gui/src/app/pages/activity.rs:439
 #: crates/pdfs-gui/src/app/pages/browser.rs:385
 #: crates/pdfs-gui/src/app/pages/browser.rs:2109
-#: crates/pdfs-gui/src/app/pages/browser.rs:2635
-#: crates/pdfs-gui/src/app/pages/browser.rs:2639
+#: crates/pdfs-gui/src/app/pages/browser.rs:2641
+#: crates/pdfs-gui/src/app/pages/browser.rs:2645
 #: crates/pdfs-gui/src/app/pages/devices.rs:325
 #: crates/pdfs-gui/src/app/pages/locations.rs:192
 #: crates/pdfs-gui/src/app/pages/locations.rs:1123
@@ -535,8 +535,8 @@ msgid "Couldn't read activity"
 msgstr "Impossible de lire l’activité"
 
 #: crates/pdfs-gui/src/app/pages/activity.rs:470
-#: crates/pdfs-gui/src/app/pages/browser.rs:2671
-#: crates/pdfs-gui/src/app/pages/browser.rs:2853
+#: crates/pdfs-gui/src/app/pages/browser.rs:2677
+#: crates/pdfs-gui/src/app/pages/browser.rs:2859
 #: crates/pdfs-gui/src/app/pages/photo_viewer.rs:308
 #: crates/pdfs-gui/src/app/pages/photos.rs:3435
 #: crates/pdfs-gui/src/app/pages/shared_by_me.rs:382
@@ -1551,7 +1551,7 @@ msgid "Cancel thumbnail build"
 msgstr "Annuler la génération des miniatures"
 
 #: crates/pdfs-gui/src/app/pages/browser.rs:255
-#: crates/pdfs-gui/src/app/pages/browser.rs:2784
+#: crates/pdfs-gui/src/app/pages/browser.rs:2790
 msgid "Search this folder only"
 msgstr "Rechercher uniquement dans ce dossier"
 
@@ -1843,7 +1843,7 @@ msgid "The Proton Drive service stopped reporting thumbnail progress."
 msgstr "Le service Proton Drive ne signale plus la progression des miniatures."
 
 #: crates/pdfs-gui/src/app/pages/browser.rs:1705
-#: crates/pdfs-gui/src/app/pages/browser.rs:2925
+#: crates/pdfs-gui/src/app/pages/browser.rs:2932
 #, rust-format
 msgid "{n} folder"
 msgid_plural "{n} folders"
@@ -1936,7 +1936,7 @@ msgstr "Aucun dossier ici."
 
 #: crates/pdfs-gui/src/app/pages/browser.rs:2287
 #: crates/pdfs-gui/src/app/pages/browser.rs:2331
-#: crates/pdfs-gui/src/app/pages/browser.rs:2578
+#: crates/pdfs-gui/src/app/pages/browser.rs:2584
 msgid "Couldn't move"
 msgstr "Impossible de déplacer"
 
@@ -2014,51 +2014,51 @@ msgctxt "verb"
 msgid "View"
 msgstr "Afficher"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2570
+#: crates/pdfs-gui/src/app/pages/browser.rs:2576
 #, rust-format
 msgid "Moved into “{name}”"
 msgstr "Déplacé dans « {name} »"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2640
+#: crates/pdfs-gui/src/app/pages/browser.rs:2646
 #: crates/pdfs-gui/src/app/pages/devices.rs:261
 msgid "Reading this folder."
 msgstr "Lecture de ce dossier."
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2685
+#: crates/pdfs-gui/src/app/pages/browser.rs:2691
 msgid "Folder unavailable"
 msgstr "Dossier indisponible"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2689
+#: crates/pdfs-gui/src/app/pages/browser.rs:2695
 msgid "Couldn't open this folder"
 msgstr "Impossible d’ouvrir ce dossier"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2731
+#: crates/pdfs-gui/src/app/pages/browser.rs:2737
 #: crates/pdfs-gui/src/app/pages/devices.rs:101
 #: crates/pdfs-gui/src/app/pages/shared.rs:456
 msgid "This folder is empty"
 msgstr "Ce dossier est vide"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2732
+#: crates/pdfs-gui/src/app/pages/browser.rs:2738
 msgid "Drop files here, or upload a file or create a folder to get started."
 msgstr ""
 "Déposez des fichiers ici, ou téléversez un fichier ou créez un dossier pour "
 "commencer."
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2782
+#: crates/pdfs-gui/src/app/pages/browser.rs:2788
 msgid "Search everywhere"
 msgstr "Rechercher partout"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2818
-#: crates/pdfs-gui/src/app/pages/browser.rs:2822
+#: crates/pdfs-gui/src/app/pages/browser.rs:2824
+#: crates/pdfs-gui/src/app/pages/browser.rs:2828
 msgid "Searching…"
 msgstr "Recherche…"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2823
+#: crates/pdfs-gui/src/app/pages/browser.rs:2829
 #, rust-format
 msgid "Looking for “{query}”."
 msgstr "Recherche de « {query} »."
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2879
+#: crates/pdfs-gui/src/app/pages/browser.rs:2885
 #, rust-format
 msgid "{summary} — showing the first {n} search result"
 msgid_plural "{summary} — showing the first {n} search results"
@@ -2066,20 +2066,20 @@ msgstr[0] "{summary} — affichage de {n} premier résultat de recherche"
 msgstr[1] "{summary} — affichage des {n} premiers résultats de recherche"
 
 #. Translators: {summary} counts the hits, such as "2 folders, 5 files (3.0 MB)".
-#: crates/pdfs-gui/src/app/pages/browser.rs:2886
+#: crates/pdfs-gui/src/app/pages/browser.rs:2892
 #, rust-format
 msgid "{summary} — search results"
 msgstr "{summary} — résultats de recherche"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2892
+#: crates/pdfs-gui/src/app/pages/browser.rs:2898
 msgid "No matches"
 msgstr "Aucun résultat"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2893
+#: crates/pdfs-gui/src/app/pages/browser.rs:2899
 msgid "No files or folders match that search."
 msgstr "Aucun fichier ni dossier ne correspond à cette recherche."
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2926
+#: crates/pdfs-gui/src/app/pages/browser.rs:2933
 #: crates/pdfs-gui/src/i18n.rs:248
 #, rust-format
 msgid "{n} file"
@@ -2087,17 +2087,17 @@ msgid_plural "{n} files"
 msgstr[0] "{n} fichier"
 msgstr[1] "{n} fichiers"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2932
+#: crates/pdfs-gui/src/app/pages/browser.rs:2939
 #, rust-format
 msgid "{files} ({size})"
 msgstr "{files} ({size})"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2937
+#: crates/pdfs-gui/src/app/pages/browser.rs:2944
 #, rust-format
 msgid "{folders}, {files}"
 msgstr "{folders}, {files}"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2942
+#: crates/pdfs-gui/src/app/pages/browser.rs:2949
 #, rust-format
 msgid "{folders}, {files} ({size})"
 msgstr "{folders}, {files} ({size})"