feat(menu): add sort (date/name/size), live filter, reverse; visible-only A/N; responsive footer (#34)

Paginated menu:
- Sorting: press S/s to cycle Date → Name → Size; press R/r to reverse.
- Live filter: press F/f to enter; case-insensitive substring; prefix with ' to anchor at start; DELETE to backspace; ENTER to apply; ESC to cancel. Shows “searching…” while rebuilding.
- Selection scope: A (All) and N (None) now work on the currently visible items only (after filter/sort), not the entire list.
- Footer: adds A/N to the help line and wraps only at ' | ' separators so labels are never broken; adapts to terminal width.
- Internals: view_indices mapping for filtered/sorted view; glob-safe matching via _pm_escape_glob; drain_pending_input; robust stty restore; optional MOLE_MANAGED_ALT_SCREEN; cleanup unsets MOLE_READ_KEY_FORCE_CHAR; shellcheck clean.

common.sh:
- read_key supports a raw typing mode (MOLE_READ_KEY_FORCE_CHAR=1) emitting CHAR:<k>; ENTER/DELETE/ESC handled.
- Uppercase A/N/R mappings (ALL/NONE/RETRY), printable-key detection, better ESC sequence handling.

app_selector.sh:
- Builds and exports per-item metadata CSV for epochs and size_kb via MOLE_MENU_META_EPOCHS and MOLE_MENU_META_SIZEKB; unsets them after the menu.
- Menu options keep display text; sorting/filtering use metadata.

uninstall.sh:
- Computes app_size_kb using du -sk for numeric sorting while keeping human-readable size; writes it as the final field.
- load_applications reads the new size_kb field.

Notes:
- Footer grew due to new commands; responsive wrapping prevents mid-word breaks.
- ./tests/run.sh: only the two upstream failures remain (unchanged by this patch).

Co-authored-by: Jonas Bertossa <jonas.bertossa@eoc.ch>

lib/app_selector.sh

@@ -33,18 +33,44 @@ select_apps_for_uninstall() {
 
     # Build menu options
     local -a menu_options=()
+    # Prepare metadata (comma-separated) for sorting/filtering inside the menu
+    local epochs_csv=""
+    local sizekb_csv=""
+    local idx=0
     for app_data in "${apps_data[@]}"; do
-        # Ignore metadata fields not needed for menu display
-        IFS='|' read -r _ _ display_name _ size last_used <<< "$app_data"
+        # Keep extended field 7 (size_kb) if present
+        IFS='|' read -r epoch _ display_name _ size last_used size_kb <<< "$app_data"
         menu_options+=("$(format_app_display "$display_name" "$size" "$last_used")")
+        # Build csv lists (avoid trailing commas)
+        if [[ $idx -eq 0 ]]; then
+            epochs_csv="${epoch:-0}"
+            sizekb_csv="${size_kb:-0}"
+        else
+            epochs_csv+=",${epoch:-0}"
+            sizekb_csv+=",${size_kb:-0}"
+        fi
+        ((idx++))
     done
 
+    # Expose metadata for the paginated menu (optional inputs)
+    # - MOLE_MENU_META_EPOCHS: numeric last_used_epoch per item
+    # - MOLE_MENU_META_SIZEKB: numeric size in KB per item
+    # The menu will gracefully fallback if these are unset or malformed.
+    export MOLE_MENU_META_EPOCHS="$epochs_csv"
+    export MOLE_MENU_META_SIZEKB="$sizekb_csv"
+    # Optional: allow default sort override via env (date|name|size)
+    # export MOLE_MENU_SORT_DEFAULT="${MOLE_MENU_SORT_DEFAULT:-date}"
+
     # Use paginated menu - result will be stored in MOLE_SELECTION_RESULT
     # Note: paginated_multi_select enters alternate screen and handles clearing
     MOLE_SELECTION_RESULT=""
     paginated_multi_select "Select Apps to Remove" "${menu_options[@]}"
     local exit_code=$?
 
+    # Clean env leakage for safety
+    unset MOLE_MENU_META_EPOCHS MOLE_MENU_META_SIZEKB
+    # leave MOLE_MENU_SORT_DEFAULT untouched if user set it globally
+
     if [[ $exit_code -ne 0 ]]; then
         echo "Cancelled"
         return 1
@@ -56,11 +82,9 @@ select_apps_for_uninstall() {
     fi
 
     # Build selected apps array (global variable in bin/uninstall.sh)
-    # Clear existing selections - compatible with bash 3.2
     selected_apps=()
 
     # Parse indices and build selected apps array
-    # MOLE_SELECTION_RESULT is comma-separated list of indices from the paginated menu
     IFS=',' read -r -a indices_array <<< "$MOLE_SELECTION_RESULT"
 
     for idx in "${indices_array[@]}"; do