feat(combat): play the round a beat at a time with attack and hit frames

The server resolves a whole round in one call, so both blows used to land
at the same instant. The page now keeps its own view of the combat and
plays the round back: the swing animates, the monster's HP and log line
land, then after a beat the monster strikes and the player recoils.

Both animations are six-frame sprite sheets driven by steps(6), which is
why the phase durations mirror the stylesheet.

The status row reflows on the stage's own width via a container query —
the side rails can squeeze it narrow while the viewport is still wide,
which previously overlapped the round marker with the player's name. The
component-style budget moves to 12kB to fit this screen's stylesheet.

apps/web/src/app/features/combat/combat-page/combat-page.component.html

@@ -1,5 +1,5 @@
 <section class="combat" aria-label="Kampf">
-  @if (combatStore.combat(); as combat) {
+  @if (combat(); as combat) {
     <div class="combat__stage">
       <header class="combat__status">
         <div class="fighter fighter--player">
@@ -49,9 +49,16 @@
       </header>
 
       <div class="combat__field">
-        <img class="sprite sprite--player" [src]="playerSprite" [alt]="combat.player.name" />
+        <div
+          class="sprite sprite--player"
+          [class.sprite--attacking]="phase() === 'attacking'"
+          [class.sprite--hit]="phase() === 'hit'"
+          role="img"
+          [attr.aria-label]="combat.player.name"
+        ></div>
         <img
           class="sprite sprite--monster"
+          [style.--sprite-scale]="monsterSpriteScale(combat.monster.key)"
           [src]="monsterSprite(combat.monster.key, combat.monster.artworkPath)"
           [alt]="combat.monster.name"
         />
@@ -63,7 +70,7 @@
             type="button"
             class="action"
             data-combat-attack
-            [disabled]="combatStore.actionPending()"
+            [disabled]="busy()"
             (click)="attack()"
           >
             <img class="action__icon" src="/images/hud/runtime/AttackIcon-96.png" alt="" />