feat(cli,fuse,core): copy files and folders on Proton Drive

`pdfs copy PATH... NEW_PARENT` sends a new control request, Copy, which
copies a file with its content or a folder with its subtree on Proton
Drive through proton-drive-rs's copy_node. Nothing is downloaded or
uploaded. A name already taken in the destination gets the next free
" (n)" suffix through get_available_name.

A copy cannot wait in the queue, because Drive copies what it holds.
So it is refused offline, and while the mount still owes Drive part of
the node: a local placeholder, a queued op, unsaved writes, or, for a
folder, any queued op at all. Local-first does not change this.

DriveApi gains copy_node and get_available_name, and the fake drive
copies subtrees, so a FUSE sim test covers the copy, the suffix, the
folder subtree and both refusals. The activity feed logs a new Copy
kind, translated in every catalog.

Needs the proton-drive-rs release that adds copy_node; until then, build
with a [patch.crates-io] pointing at proton-sdk-rs.

po/pl.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: 2026-10-17 01:23+0200\n"
+"POT-Creation-Date: 2026-10-25 20:52+0100\n"
 "PO-Revision-Date: 2026-09-23 12:00+0200\n"
 "Last-Translator: Proton Drive for Linux contributors\n"
 "Language-Team: Polish\n"
@@ -60,7 +60,7 @@ msgid "%A, %B %-d, %Y, %H:%M"
 msgstr "%A, %-d %B %Y, %H:%M"
 
 #: crates/pdfs-gui/src/app/main.rs:856
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:539
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:543
 #: crates/pdfs-gui/src/app/pages/browser.rs:454
 #: crates/pdfs-gui/src/app/pages/browser.rs:833
 #: crates/pdfs-gui/src/app/pages/browser.rs:1239
@@ -840,189 +840,201 @@ msgstr "Przeniesiono {name}"
 msgid "Couldn't move {name}"
 msgstr "Nie można przenieść {name}"
 
-#. Translators: {name} is a folder name.
+#. Translators: {name} is a file or folder name.
 #: crates/pdfs-gui/src/app/pages/activity_text.rs:183
 #, rust-format
+msgid "Copied {name}"
+msgstr "Skopiowano {name}"
+
+#. Translators: {name} is a file or folder name.
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:185
+#, rust-format
+msgid "Couldn't copy {name}"
+msgstr "Nie można skopiować {name}"
+
+#. Translators: {name} is a folder name.
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:187
+#, rust-format
 msgid "Created folder {name}"
 msgstr "Utworzono katalog {name}"
 
 #. Translators: {name} is a folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:185
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:189
 #, rust-format
 msgid "Couldn't create folder {name}"
 msgstr "Nie można utworzyć katalogu {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:187
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:191
 #, rust-format
 msgid "Moved {name} to the Trash"
 msgstr "Przeniesiono {name} do kosza"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:189
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:193
 #, rust-format
 msgid "Couldn't move {name} to the Trash"
 msgstr "Nie można przenieść {name} do kosza"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:191
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:195
 #, rust-format
 msgid "Restored {name}"
 msgstr "Przywrócono {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:193
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:197
 #, rust-format
 msgid "Couldn't restore {name}"
 msgstr "Nie można przywrócić {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:195
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:199
 #, rust-format
 msgid "Deleted {name} forever"
 msgstr "Trwale usunięto {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:197
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:201
 #, rust-format
 msgid "Couldn't delete {name}"
 msgstr "Nie można usunąć {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:198
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:202
 msgid "Emptied the Trash"
 msgstr "Opróżniono kosz"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:199
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:203
 msgid "Couldn't empty the Trash"
 msgstr "Nie można opróżnić kosza"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:201
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:205
 #, rust-format
 msgid "Shared {name}"
 msgstr "Udostępniono {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:203
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:207
 #, rust-format
 msgid "Couldn't share {name}"
 msgstr "Nie można udostępnić {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:205
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:209
 #, rust-format
 msgid "Created a link to {name}"
 msgstr "Utworzono odnośnik do {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:207
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:211
 #, rust-format
 msgid "Couldn't create a link to {name}"
 msgstr "Nie można utworzyć odnośnika do {name}"
 
 #. Translators: {name} is a file or folder name.
 #. Translators: {name} is the item's name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:209
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:213
 #: crates/pdfs-gui/src/app/pages/shared_by_me.rs:559
 #, rust-format
 msgid "Stopped sharing {name}"
 msgstr "Zakończono udostępnianie {name}"
 
 #. Translators: {name} is a file or folder name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:211
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:215
 #, rust-format
 msgid "Couldn't stop sharing {name}"
 msgstr "Nie można zakończyć udostępniania {name}"
 
 #. Translators: {name} is the name of the conflicting copy.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:213
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:217
 #, rust-format
 msgid "Conflicting copy {name}"
 msgstr "Kopia konfliktowa {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:236
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:240
 msgid "Removed on Proton Drive"
 msgstr "Usunięto w Proton Drive"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:237
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:241
 msgid "Removed on this computer"
 msgstr "Usunięto na tym komputerze"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:239
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:243
 msgid "Replaced by a renamed file"
 msgstr "Zastąpiono plikiem o zmienionej nazwie"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:243
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:247
 msgid ""
 "The destination folder no longer exists, so the file stayed where it was"
 msgstr "Katalog docelowy już nie istnieje, więc plik pozostał na miejscu"
 
 #. Translators: {name} is the folder an item was moved into.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:262
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:266
 #, rust-format
 msgid "To {name}"
 msgstr "Do {name}"
 
 #. Translators: {name} is an item's previous name.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:266
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:270
 #, rust-format
 msgid "Previously {name}"
 msgstr "Wcześniej {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:269
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:273
 msgid "Restored an earlier version"
 msgstr "Przywrócono wcześniejszą wersję"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:272
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:276
 msgid "Deleted an earlier version"
 msgstr "Usunięto wcześniejszą wersję"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:279
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:283
 #, rust-format
 msgid "Saved an earlier version to {path}"
 msgstr "Zapisano wcześniejszą wersję w {path}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:286
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:290
 #, rust-format
 msgid "Kept both; the copy is now {name}"
 msgstr "Zachowano oba; kopia to teraz {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:296
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:300
 #, rust-format
 msgid "Kept {name}; the copy is in the Trash"
 msgstr "Zachowano {name}; kopia jest w koszu"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:301
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:305
 msgid "Kept the conflicting copy"
 msgstr "Zachowano kopię konfliktową"
 
 #. Translators: {name} is the file that was kept.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:305
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:309
 #, rust-format
 msgid "Kept {name}"
 msgstr "Zachowano {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:310
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:314
 #, rust-format
 msgid "Same as {name}, so it was removed"
 msgstr "Taki sam jak {name}, więc został usunięty"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:317
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:321
 #, rust-format
 msgid "The name was taken, so it was moved as {name}"
 msgstr "Nazwa była zajęta, więc przeniesiono jako {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:324
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:328
 #, rust-format
 msgid "The name was taken on Proton Drive, so it was renamed to {name}"
 msgstr "Nazwa była zajęta w Proton Drive, więc zmieniono ją na {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:331
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:335
 #, rust-format
 msgid "The name was taken on Proton Drive, so it was created as {name}"
 msgstr "Nazwa była zajęta w Proton Drive, więc utworzono jako {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:340
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:344
 #, rust-format
 msgid ""
 "Its folder was moved to the Trash on Proton Drive, so it was created at the "
@@ -1031,14 +1043,14 @@ msgstr ""
 "Jego katalog został przeniesiony do kosza w Proton Drive, więc utworzono go "
 "na najwyższym poziomie jako {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:350
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:354
 #, rust-format
 msgid ""
 "It no longer exists on Proton Drive, so your changes were uploaded as {name}"
 msgstr ""
 "Plik już nie istnieje w Proton Drive, więc Twoje zmiany przesłano jako {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:356
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:360
 #, rust-format
 msgid ""
 "It was moved to the Trash on Proton Drive, so your changes were uploaded as "
@@ -1047,7 +1059,7 @@ msgstr ""
 "Plik został przeniesiony do kosza w Proton Drive, więc Twoje zmiany "
 "przesłano jako {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:362
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:366
 #, rust-format
 msgid "It was changed on Proton Drive, so your changes were uploaded as {name}"
 msgstr ""
@@ -1055,19 +1067,19 @@ msgstr ""
 
 #. Translators: {name} is the copy the changes made on this
 #. computer were uploaded as.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:367
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:371
 #, rust-format
 msgid "Your changes were uploaded as {name}"
 msgstr "Twoje zmiany przesłano jako {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:377
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:381
 #, rust-format
 msgid ""
 "It no longer exists on Proton Drive, so your changes were kept in {path}"
 msgstr ""
 "Plik już nie istnieje w Proton Drive, więc Twoje zmiany zachowano w {path}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:383
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:387
 #, rust-format
 msgid ""
 "It was moved to the Trash on Proton Drive, so your changes were kept in "
@@ -1076,7 +1088,7 @@ msgstr ""
 "Plik został przeniesiony do kosza w Proton Drive, więc Twoje zmiany "
 "zachowano w {path}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:389
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:393
 #, rust-format
 msgid "It was changed on Proton Drive, so your changes were kept in {path}"
 msgstr ""
@@ -1084,31 +1096,31 @@ msgstr ""
 
 #. Translators: {path} is the file on this computer that holds the
 #. changes which could not be uploaded.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:394
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:398
 #, rust-format
 msgid "Your changes were kept in {path}"
 msgstr "Twoje zmiany zachowano w {path}"
 
 #. Translators: {name} is the file the conflicting copy was made from.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:399
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:403
 #: crates/pdfs-gui/src/app/pages/locations.rs:989
 #, rust-format
 msgid "Differs from {name}"
 msgstr "Różni się od {name}"
 
 #. Translators: {name} is the file the conflicting copy was made from.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:406
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:410
 #, rust-format
 msgid "{name} no longer exists"
 msgstr "{name} już nie istnieje"
 
 #. Translators: {name} is the file the conflicting copy was made from.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:413
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:417
 #, rust-format
 msgid "Same as {name}"
 msgstr "Taki sam jak {name}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:420
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:424
 #, rust-format
 msgid "{n} person can view"
 msgid_plural "{n} people can view"
@@ -1116,7 +1128,7 @@ msgstr[0] "Osoby z prawem do wyświetlania: {n}"
 msgstr[1] "Osoby z prawem do wyświetlania: {n}"
 msgstr[2] "Osoby z prawem do wyświetlania: {n}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:421
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:425
 #, rust-format
 msgid "{n} person can edit"
 msgid_plural "{n} people can edit"
@@ -1124,7 +1136,7 @@ msgstr[0] "Osoby z prawem do edycji: {n}"
 msgstr[1] "Osoby z prawem do edycji: {n}"
 msgstr[2] "Osoby z prawem do edycji: {n}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:422
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:426
 #, rust-format
 msgid "{n} person invited"
 msgid_plural "{n} people invited"
@@ -1132,7 +1144,7 @@ msgstr[0] "Zaproszone osoby: {n}"
 msgstr[1] "Zaproszone osoby: {n}"
 msgstr[2] "Zaproszone osoby: {n}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:427
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:431
 #, rust-format
 msgid "{n} file kept as a conflicting copy"
 msgid_plural "{n} files kept as conflicting copies"
@@ -1140,7 +1152,7 @@ msgstr[0] "Pliki zachowane jako kopie konfliktowe: {n}"
 msgstr[1] "Pliki zachowane jako kopie konfliktowe: {n}"
 msgstr[2] "Pliki zachowane jako kopie konfliktowe: {n}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:435
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:439
 #, rust-format
 msgid "{n} item failed and will be tried again"
 msgid_plural "{n} items failed and will be tried again"
@@ -1149,8 +1161,8 @@ msgstr[1] "Nieudane elementy, które zostaną ponowione: {n}"
 msgstr[2] "Nieudane elementy, które zostaną ponowione: {n}"
 
 #. Translators: part of a list summing up a sync pass.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:473
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:504
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:477
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:508
 #, rust-format
 msgid "{n} uploaded"
 msgid_plural "{n} uploaded"
@@ -1159,7 +1171,7 @@ msgstr[1] "Wysłano: {n}"
 msgstr[2] "Wysłano: {n}"
 
 #. Translators: part of a list summing up a sync pass.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:475
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:479
 #, rust-format
 msgid "{n} downloaded"
 msgid_plural "{n} downloaded"
@@ -1168,7 +1180,7 @@ msgstr[1] "Pobrano: {n}"
 msgstr[2] "Pobrano: {n}"
 
 #. Translators: part of a list summing up a sync pass.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:477
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:481
 #, rust-format
 msgid "{n} folder created"
 msgid_plural "{n} folders created"
@@ -1177,7 +1189,7 @@ msgstr[1] "Utworzone katalogi: {n}"
 msgstr[2] "Utworzone katalogi: {n}"
 
 #. Translators: part of a list summing up a sync pass.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:479
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:483
 #, rust-format
 msgid "{n} deleted"
 msgid_plural "{n} deleted"
@@ -1186,7 +1198,7 @@ msgstr[1] "Usunięto: {n}"
 msgstr[2] "Usunięto: {n}"
 
 #. Translators: part of a list summing up a sync pass.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:481
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:485
 #, rust-format
 msgid "{n} in conflict"
 msgid_plural "{n} in conflict"
@@ -1196,7 +1208,7 @@ msgstr[2] "W konflikcie: {n}"
 
 #. Translators: part of a list summing up a sync pass; the files are
 #. still open in another app.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:484
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:488
 #, rust-format
 msgid "{n} still open"
 msgid_plural "{n} still open"
@@ -1205,8 +1217,8 @@ msgstr[1] "Wciąż otwarte: {n}"
 msgstr[2] "Wciąż otwarte: {n}"
 
 #. Translators: part of a list summing up a sync pass.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:486
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:509
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:490
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:513
 #, rust-format
 msgid "{n} failed"
 msgid_plural "{n} failed"
@@ -1214,13 +1226,13 @@ msgstr[0] "Niepowodzenia: {n}"
 msgstr[1] "Niepowodzenia: {n}"
 msgstr[2] "Niepowodzenia: {n}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:498
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:502
 msgid "Cancelled"
 msgstr "Anulowano"
 
 #. Translators: photos an import skipped because they were already
 #. in Proton Drive.
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:507
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:511
 #, rust-format
 msgid "{n} already there"
 msgid_plural "{n} already there"
@@ -1228,7 +1240,7 @@ msgstr[0] "Już obecne: {n}"
 msgstr[1] "Już obecne: {n}"
 msgstr[2] "Już obecne: {n}"
 
-#: crates/pdfs-gui/src/app/pages/activity_text.rs:508
+#: crates/pdfs-gui/src/app/pages/activity_text.rs:512
 #: crates/pdfs-gui/src/app/pages/albums.rs:107
 #: crates/pdfs-gui/src/app/pages/albums.rs:694
 #, rust-format