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/nl.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: Dutch\n"
@@ -511,8 +511,8 @@ msgstr "Weergaveopties"
 #: 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
@@ -532,8 +532,8 @@ msgid "Couldn't read activity"
 msgstr "Kon activiteit niet lezen"
 
 #: 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
@@ -1541,7 +1541,7 @@ msgid "Cancel thumbnail build"
 msgstr "Aanmaken van miniaturen annuleren"
 
 #: 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 "Alleen in deze map zoeken"
 
@@ -1831,7 +1831,7 @@ msgid "The Proton Drive service stopped reporting thumbnail progress."
 msgstr "De Proton Drive-service meldt geen voortgang van miniaturen meer."
 
 #: 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"
@@ -1924,7 +1924,7 @@ msgstr "Geen mappen hier."
 
 #: 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 "Kon niet verplaatsen"
 
@@ -2002,51 +2002,51 @@ msgctxt "verb"
 msgid "View"
 msgstr "Bekijken"
 
-#: 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 "Verplaatst naar “{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 "Deze map wordt gelezen."
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2685
+#: crates/pdfs-gui/src/app/pages/browser.rs:2691
 msgid "Folder unavailable"
 msgstr "Map niet beschikbaar"
 
-#: 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 "Kon deze map niet openen"
 
-#: 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 "Deze map is leeg"
 
-#: 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 ""
 "Sleep bestanden hierheen, of upload een bestand of maak een map aan om te "
 "beginnen."
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2782
+#: crates/pdfs-gui/src/app/pages/browser.rs:2788
 msgid "Search everywhere"
 msgstr "Overal zoeken"
 
-#: 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 "Zoeken…"
 
-#: 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 "Zoeken naar “{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"
@@ -2054,20 +2054,20 @@ msgstr[0] "{summary} — eerste {n} zoekresultaat wordt getoond"
 msgstr[1] "{summary} — eerste {n} zoekresultaten worden getoond"
 
 #. 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} — zoekresultaten"
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2892
+#: crates/pdfs-gui/src/app/pages/browser.rs:2898
 msgid "No matches"
 msgstr "Geen overeenkomsten"
 
-#: 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 "Geen bestanden of mappen komen overeen met deze zoekopdracht."
 
-#: 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"
@@ -2075,17 +2075,17 @@ msgid_plural "{n} files"
 msgstr[0] "{n} bestand"
 msgstr[1] "{n} bestanden"
 
-#: 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})"