fix: address reviewer feedback — rename scroll field to bool, relocate static, drop env var

- Rename `ui_scroll_tick_count: u64` → `should_text_scroll: bool` across all 33
  call sites; `on_ui_scroll_tick` now assigns true/false instead of 0/1
- Remove two now-redundant comments from `test_on_ui_scroll_tick`
- Move `WHITESPACE_RE` static declaration below module imports in network/mod.rs
- Remove `MANAGARR_TICK_RATE_MS` env var and its parsing helpers; `recv()`-based
  blocking already brings idle CPU to near-0, and tuning tick rate silently
  stretches the poll cadence — keep `DEFAULT_TICK_RATE_MS` const only

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01C3FpbniZme9mJqgFkMVowz

src/ui/lidarr_ui/downloads/mod.rs

@@ -88,7 +88,7 @@ fn draw_downloads(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
       output_path.as_ref().unwrap().scroll_left_or_reset(
         get_width_from_percentage(area, 18),
         current_selection == *download_record,
-        app.ui_scroll_tick_count == 0,
+        app.should_text_scroll,
       );
     }
 

src/ui/lidarr_ui/history/mod.rs

@@ -60,7 +60,7 @@ fn draw_history_table(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
       source_title.scroll_left_or_reset(
         get_width_from_percentage(area, 50),
         current_selection == *history_item,
-        app.ui_scroll_tick_count == 0,
+        app.should_text_scroll,
       );
 
       Row::new(vec![

src/ui/lidarr_ui/indexers/test_all_indexers_ui.rs

@@ -46,7 +46,7 @@ fn draw_test_all_indexers_test_results(f: &mut Frame<'_>, app: &mut App<'_>, are
     result.validation_failures.scroll_left_or_reset(
       get_width_from_percentage(area, 86),
       *result == current_selection,
-      app.ui_scroll_tick_count == 0,
+      app.should_text_scroll,
     );
     let pass_fail = if result.is_valid { "+" } else { "x" };
     let row = Row::new(vec![

src/ui/lidarr_ui/library/add_artist_ui.rs

@@ -112,7 +112,7 @@ fn draw_add_artist_search(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
     artist.artist_name.scroll_left_or_reset(
       get_width_from_percentage(area, 27),
       *artist == current_selection,
-      app.ui_scroll_tick_count == 0,
+      app.should_text_scroll,
     );
 
     Row::new(vec![

src/ui/lidarr_ui/library/album_details_ui.rs

@@ -250,7 +250,7 @@ fn draw_album_history_table(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
           source_title.scroll_left_or_reset(
             get_width_from_percentage(area, 40),
             current_selection == *history_item,
-            app.ui_scroll_tick_count == 0,
+            app.should_text_scroll,
           );
 
           Row::new(vec![
@@ -345,7 +345,7 @@ fn draw_album_releases(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
             get_width_from_percentage(area, 35),
             current_selection == *release
               && active_lidarr_block != ActiveLidarrBlock::ManualAlbumSearchConfirmPrompt,
-            app.ui_scroll_tick_count == 0,
+            app.should_text_scroll,
           );
           let size = convert_to_gb(*size);
           let rejected_str = if *rejected { "⛔" } else { "" };

src/ui/lidarr_ui/library/artist_details_ui.rs

@@ -271,7 +271,7 @@ fn draw_albums_table(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
       album.title.scroll_left_or_reset(
         get_width_from_percentage(area, 33),
         *album == current_selection,
-        app.ui_scroll_tick_count == 0,
+        app.should_text_scroll,
       );
       let monitored = if album.monitored { "🏷" } else { "" };
       let album_type = album.album_type.clone().unwrap_or_default();
@@ -376,7 +376,7 @@ fn draw_artist_history_table(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
         source_title.scroll_left_or_reset(
           get_width_from_percentage(area, 40),
           current_selection == *history_item,
-          app.ui_scroll_tick_count == 0,
+          app.should_text_scroll,
         );
 
         Row::new(vec![
@@ -490,7 +490,7 @@ fn draw_artist_releases(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
         get_width_from_percentage(area, 35),
         current_selection == *release
           && active_lidarr_block != ActiveLidarrBlock::ManualArtistSearchConfirmPrompt,
-        app.ui_scroll_tick_count == 0,
+        app.should_text_scroll,
       );
       let size = convert_to_gb(*size);
       let rejected_str = if *rejected { "⛔" } else { "" };

src/ui/lidarr_ui/library/mod.rs

@@ -96,7 +96,7 @@ fn draw_library(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
       artist.artist_name.scroll_left_or_reset(
         get_width_from_percentage(area, 25),
         *artist == current_selection,
-        app.ui_scroll_tick_count == 0,
+        app.should_text_scroll,
       );
       let monitored = if artist.monitored { "🏷" } else { "" };
       let artist_type = artist.artist_type.clone().unwrap_or_default();

src/ui/lidarr_ui/library/track_details_ui.rs

@@ -158,7 +158,7 @@ fn draw_track_history_table(f: &mut Frame<'_>, app: &mut App<'_>, area: Rect) {
           source_title.scroll_left_or_reset(
             get_width_from_percentage(area, 40),
             current_selection == *history_item,
-            app.ui_scroll_tick_count == 0,
+            app.should_text_scroll,
           );
 
           Row::new(vec![