Mobile UI pass: responsive tables, deck-view drill-down, dialog fixes

- Library/Card Search/Deck tables stack into dense card-style rows below
  720px instead of scrolling horizontally (floated thumbnail, wrapping
  chips for MV/Owned/color pips).
- Deck view: fix desktop min-widths and a non-wrapping button row that
  forced horizontal scroll on phones; split the deck list and the
  deck-building pane into separate drill-down screens with a back button
  so a long deck list doesn't bury the builder.
- Suggested Cards modal: fix action buttons crushing the card name down to
  one word per line by giving them their own full-width row.
- Add a close (X) button to the shared dialog title bar — mobile has no
  Escape key and wide dialogs leave little backdrop to tap.
- Info tab, bottom-nav loading/safe-area fixes, and Gradle NDK_HOME
  inheritance fix carried over from the Android bring-up work.

src-tauri/src/commands.rs

@@ -53,7 +53,17 @@ fn status_of(s: &AppState) -> Status {
 
 #[tauri::command]
 pub fn get_status(db: Db) -> Res<Status> {
-    Ok(status_of(&db.lock().unwrap()))
+    let status = status_of(&db.lock().unwrap());
+    // Only ever called once per launch (from the frontend's one status-fetch
+    // effect, retried on failure/timeout) — cheap to log unconditionally, and
+    // it's the one way to tell "this invoke never reached Rust" (nothing
+    // logged at all) apart from "it reached Rust and returned not-ready".
+    crate::mlog!(
+        "get_status: reference_ready={} card_count={}",
+        status.reference_ready,
+        status.card_count
+    );
+    Ok(status)
 }
 
 #[tauri::command]