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/pdfs.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: proton-drive-linux 2.10.0\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: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -483,8 +483,8 @@ msgstr ""
 #: 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
@@ -504,8 +504,8 @@ msgid "Couldn't read activity"
 msgstr ""
 
 #: 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
@@ -1499,7 +1499,7 @@ msgid "Cancel thumbnail build"
 msgstr ""
 
 #: 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 ""
 
@@ -1787,7 +1787,7 @@ msgid "The Proton Drive service stopped reporting thumbnail progress."
 msgstr ""
 
 #: 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"
@@ -1878,7 +1878,7 @@ msgstr ""
 
 #: 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 ""
 
@@ -1956,49 +1956,49 @@ msgctxt "verb"
 msgid "View"
 msgstr ""
 
-#: 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 ""
 
-#: 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 ""
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2685
+#: crates/pdfs-gui/src/app/pages/browser.rs:2691
 msgid "Folder unavailable"
 msgstr ""
 
-#: 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 ""
 
-#: 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 ""
 
-#: 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 ""
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2782
+#: crates/pdfs-gui/src/app/pages/browser.rs:2788
 msgid "Search everywhere"
 msgstr ""
 
-#: 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 ""
 
-#: 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 ""
 
-#: 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"
@@ -2006,20 +2006,20 @@ msgstr[0] ""
 msgstr[1] ""
 
 #. 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 ""
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2892
+#: crates/pdfs-gui/src/app/pages/browser.rs:2898
 msgid "No matches"
 msgstr ""
 
-#: 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 ""
 
-#: 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"
@@ -2027,17 +2027,17 @@ msgid_plural "{n} files"
 msgstr[0] ""
 msgstr[1] ""
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2932
+#: crates/pdfs-gui/src/app/pages/browser.rs:2939
 #, rust-format
 msgid "{files} ({size})"
 msgstr ""
 
-#: crates/pdfs-gui/src/app/pages/browser.rs:2937
+#: crates/pdfs-gui/src/app/pages/browser.rs:2944
 #, rust-format
 msgid "{folders}, {files}"
 msgstr ""
 
-#: 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 ""