F1 steps 2-6: the Storage App, its viewers, and Maintenance moved in (#3)

The Storage App browses the SD card: folders first with sizes and dates,
three sorts, one item at a time with a clipboard (c, x, v), rename, delete
after counting what's inside, new folder, details. A listing holds 256
entries and says when a folder has more.

FileOps does the card's work for the App and the console alike, one
operation at a time on the storage task in turns of about 150 ms, so Logs
and Captures are still written during a long copy. A copy shows progress,
can be cancelled (what it wrote is taken back) and compares sizes after.
The read-only rules are checked there: the firmware's top-level folders,
/gemini/cache, and files being written (a Track, a Capture, an upload,
today's IRC Logs). A listing reads the folder straight from FatFs: through
the Arduino File, 329 entries took over two seconds.

Viewers by type: text read a screen at a time whatever the file's size
(logs open at the end), a hex dump, a Capture's packets as the LoRa Scanner
lists them, a Track's summary, and an Update File checked as an install
would check it, without writing anything. Tab shows any file as hex or text.

Settings > Storage is gone: usage, Storage Clean-up and Erase are the App's
Maintenance, behind a warning. The Storage Warning points there.

The Clock sets the system time whatever its source, so files are dated
correctly with a GNSS Fix alone (Q137).

Console: cp, mv, mkdir, du, cancel; rm takes folders and follows the rules;
ls shows dates; Debug Builds get `sd fill`.

424 host tests. Checked on the device: docs/milestones/F1.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

src/apps/settings_app.cpp

@@ -27,9 +27,6 @@ bool SettingsApp::onKey(const KeyEvent& e) {
         case Page::Menu: return onMenuKey(e);
         case Page::Text: return onTextKey(e);
         case Page::Choice: return onChoiceKey(e);
-        case Page::Storage:
-            if (!storagePage_.onKey(e)) page_ = Page::Menu;
-            return true;
         case Page::About: return onAboutKey(e);
         case Page::Wifi:
             if (!wifiPage_.onKey(e)) page_ = Page::Menu;
@@ -70,10 +67,6 @@ bool SettingsApp::onMenuKey(const KeyEvent& e) {
         case Kind::Slider: break;
         case Kind::Page:
             switch (menu_.row(i)) {
-                case Row::Storage:
-                    page_ = Page::Storage;
-                    storagePage_.enter();
-                    break;
                 case Row::Wifi:
                     page_ = Page::Wifi;
                     wifiPage_.enter();
@@ -130,8 +123,8 @@ bool SettingsApp::onAboutKey(const KeyEvent& e) {
 }
 
 void SettingsApp::update(uint32_t nowMs) {
-    // Live values on Storage and About.
-    bool live = page_ == Page::Storage || page_ == Page::About || page_ == Page::Firmware ||
+    // Live values on About and Firmware.
+    bool live = page_ == Page::About || page_ == Page::Firmware ||
                 (page_ == Page::Wifi && wifiPage_.live());
     if (live && nowMs - lastRefreshMs_ >= 500) {
         lastRefreshMs_ = nowMs;
@@ -188,7 +181,6 @@ void SettingsApp::draw(Canvas& c) {
             widgets::list(c, choices_, area, [&](int i) { return (i == current ? "* " : "  ") + options[i]; });
             break;
         }
-        case Page::Storage: storagePage_.draw(c); break;
         case Page::About: widgets::textLines(c, aboutLines(), 0, area); break;
         case Page::Wifi: wifiPage_.draw(c); break;
         case Page::Firmware: firmwarePage_.draw(c); break;