feat(web): add the quest journal

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/web/src/app/features/quests/quest-objective-line.component.scss

@@ -0,0 +1,43 @@
+:host {
+  display: block;
+}
+
+/* Description left, tally right, so a column of objectives reads as a list of
+   counts rather than a paragraph. */
+.quest-objective {
+  display: flex;
+  gap: var(--ar-space-3);
+  align-items: baseline;
+  justify-content: space-between;
+  margin: 0;
+  color: var(--ar-text);
+  font-size: 0.95rem;
+}
+
+/* Done steps stay visible but stop competing for attention. */
+.quest-objective--done {
+  color: var(--ar-text-muted);
+  text-decoration: line-through;
+  text-decoration-color: rgb(155 122 66 / 0.5);
+}
+
+.quest-objective__progress {
+  color: var(--ar-gold);
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+}
+
+.quest-objective--done .quest-objective__progress {
+  color: var(--ar-text-muted);
+}
+
+/* The line that keeps "1 / 5" from reading as a dead end (slice §4). Warning
+   amber rather than danger red: the player is not in trouble, just stuck. */
+.quest-objective__hint {
+  margin: var(--ar-space-2) 0 0;
+  padding-inline-start: var(--ar-space-3);
+  border-inline-start: 2px solid var(--ar-warning);
+  color: var(--ar-warning);
+  font-size: var(--ar-font-sm);
+  line-height: 1.5;
+}