Disk usage says what it measures; Volumes fallback matches en

There is no recursive size op (no du in the engine, payload or the AVA1
mgmt methods), and the screen sums only the files directly inside each
folder, so the description now says that instead of promising a folder is
sized by everything it holds. The Volumes header's inline fallback still
named Library -> Mount; it now matches the en.ts text.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ub1mez9eaVtTF8pMEFXvA9

client/src/i18n/locales/en.ts

@@ -3726,7 +3726,7 @@ stop: "Stop",
 activity_description_v2: "Everything the app is doing and has done on your consoles: uploads, downloads, installs and file operations. Stop or retry one from here. The last 100 are kept, also after a restart.",
 audit_log_description_v2: "A permanent record, kept on this computer, of what you deleted or changed that cannot be undone. It cannot be cleared, on purpose. The last 100 entries are shown.",
 backup_subtitle_v2: "Copy files and folders from the PS5 to this computer as a snapshot, and put a snapshot back on the PS5 later.",
-disk_usage_description_v2: "See what is taking up space on the PS5. Each block is a folder, sized by what it holds; click one to look inside it.",
+disk_usage_description_v2: "See what is taking up space on the PS5. Each block is a file or a folder. A folder is sized by the files directly inside it; its subfolders are not counted, so click it to look further down.",
 first_run_description_v2: "Loads what most set-ups need, in the right order: kstuff (lets fake packages install and run), ShadowMount+ (puts game images and folders on the PS5's home screen) and ps5upload's own helper. You can run it again any time from Settings.",
 fw_spoof_subtitle_v2: "Checks whether the firmware version this PS5 reports has been changed by a spoofing payload, so you know its real version before you install something that depends on it.",
 game_activity_subtitle_v2: "What was played on this PS5 and for how long, read from the console's own records.",

client/src/screens/DiskUsage/index.tsx

@@ -182,7 +182,7 @@ export default function DiskUsageScreen() {
         description={tr(
           "disk_usage_description_v2",
           undefined,
-          "See what is taking up space on the PS5. Each block is a folder, sized by what it holds; click one to look inside it.",
+          "See what is taking up space on the PS5. Each block is a file or a folder. A folder is sized by the files directly inside it; its subfolders are not counted, so click it to look further down.",
         )}
         right={
           <Button

client/src/screens/Volumes/index.tsx

@@ -190,7 +190,7 @@ export default function VolumesScreen() {
         description={tr(
           "volumes_description",
           undefined,
-          "Two distinct things, listed in two sections: ps5upload-managed disk-image mounts (created via Library → Mount; unmountable here), and the kernel-level storage drives below them (internal SSD, M.2, USB — read-only).",
+          "Storage drives and any disk images currently mounted on your PS5.",
         )}
         right={
           <Button