Fix scrollbars and enter to submit

frontend/src/app/components/modal/block-edit.component.ts

@@ -187,6 +187,7 @@ export function createDoneValue(defaultDone: boolean, currentDone: boolean, edit
           maxlength="10000"
           [value]="newValue().description"
           (input)="updateNewDescription($any($event.target).value)"
+          (keydown.enter)="onNewDescriptionEnter($event)"
         ></textarea>
 
         <label class="done-checkbox">
@@ -414,6 +415,13 @@ export function createDoneValue(defaultDone: boolean, currentDone: boolean, edit
         }
       }
 
+      textarea {
+        // The global reset (styles.scss) zeroes padding, so the focus outline
+        // hugs the text. Re-pad so the outline clears the description text.
+        // box-sizing: border-box (forms.scss) keeps the outer size unchanged.
+        padding: 6px 8px;
+      }
+
       .done-checkbox {
         @include medium-text();
         display: flex;
@@ -779,6 +787,18 @@ export class BlockEditComponent implements AfterViewInit {
     this.newValue.update((v) => ({ ...v, difficulty: clampDifficulty(v.difficulty + delta) }));
   }
 
+  /**
+   * Bare Enter in the create-card description submits the new task and exits.
+   * Angular's `keydown.enter` pseudo-event matches *only* unmodified Enter, so
+   * Ctrl+Enter / Shift+Enter never reach here — they fall through to the
+   * textarea's default behaviour and insert a newline.
+   */
+  onNewDescriptionEnter(event: Event): void {
+    event.preventDefault();
+    event.stopPropagation();
+    this.submitNew();
+  }
+
   submitNew(): void {
     const v = this.newValue();
     if (!v.tag) return;

frontend/src/app/components/tasks/tasks.component.ts

@@ -105,7 +105,12 @@ export function taskListMaxHeight(expanded: boolean): string {
         padding: calc(var(--small-padding) / 2);
         margin: calc(var(--small-padding) / 2);
 
-        max-height: 30vh;
+        // Height is bounded by the host (lt-tasks) flex column, which clips but
+        // does not scroll. As the sole scroller, this card shrinks to that
+        // bound (min-height: 0) and scrolls a tall list inside itself — one
+        // scrollbar, sitting within the white card.
+        flex: 0 1 auto;
+        min-height: 0;
         overflow-y: auto;
 
         .header {

frontend/src/app/components/tower/tower.component.ts

@@ -339,19 +339,20 @@ export function selectVisibleStyledBlocks(
             flex: 0 1 auto;
             min-height: 56px;
             max-height: min(30vh, 45%);
-            overflow: auto;
-            display: block;
+            // The host only bounds the accordion's height and CLIPS — it must
+            // not scroll. Scrolling lives solely on the inner card
+            // (tasks.component .container), so a tall task list shows ONE
+            // scrollbar (inside the card), not two. Flex column + the card's
+            // min-height: 0 lets the card shrink to this bound and scroll.
+            overflow: hidden;
+            display: flex;
+            flex-direction: column;
             width: 100%;
 
             @media (max-width: $mobile-width) {
               min-height: 44px;
               max-height: min(25vh, 45%);
             }
-
-            .container {
-              max-height: 100%;
-              overflow-y: auto;
-            }
           }
 
           .stack-zone {