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>

bin/uninstall.sh

@@ -245,7 +245,10 @@ scan_applications() {
 
         # Parallel size calculation
         local app_size="N/A"
+        local app_size_kb="0"
         if [[ -d "$app_path" ]]; then
+            # numeric size (KB) for sorting + human-readable for display
+            app_size_kb=$(du -sk "$app_path" 2> /dev/null | awk '{print $1}' || echo "0")
             app_size=$(du -sh "$app_path" 2> /dev/null | cut -f1 || echo "N/A")
         fi
 
@@ -297,7 +300,8 @@ scan_applications() {
         fi
 
         # Write to output file atomically
-        echo "${last_used_epoch}|${app_path}|${display_name}|${bundle_id}|${app_size}|${last_used}" >> "$output_file"
+        # Fields: epoch|app_path|display_name|bundle_id|size_human|last_used|size_kb
+        echo "${last_used_epoch}|${app_path}|${display_name}|${bundle_id}|${app_size}|${last_used}|${app_size_kb}" >> "$output_file"
     }
 
     export -f process_app_metadata
@@ -380,8 +384,8 @@ load_applications() {
     selection_state=()
 
     # Read apps into array
-    while IFS='|' read -r epoch app_path app_name bundle_id size last_used; do
-        apps_data+=("$epoch|$app_path|$app_name|$bundle_id|$size|$last_used")
+    while IFS='|' read -r epoch app_path app_name bundle_id size last_used size_kb; do
+        apps_data+=("$epoch|$app_path|$app_name|$bundle_id|$size|$last_used|${size_kb:-0}")
         selection_state+=(false)
     done < "$apps_file"