feat: add canonical spot URLs

apps/web/src/components/ActivityCard.astro

@@ -1,13 +1,13 @@
 ---
 import type { Activity } from "../lib/api";
-import { activityLevel, ago, kg, plural } from "../lib/api";
+import { activityLevel, ago, kg, plural, spotPath } from "../lib/api";
 import FishingIcon from "./FishingIcon.astro";
 import SourceBadge from "./SourceBadge.astro";
 const { item } = Astro.props as { item: Activity };
 const level = activityLevel(item.activity_score);
 const limited = item.catches < 3;
 ---
-<a class="spot-card" data-testid={`spot-${item.x}-${item.y}`} href={`/spots/${item.spot_id}`}>
+<a class="spot-card" data-testid={`spot-${item.x}-${item.y}`} href={spotPath(item)}>
   <span class="spot-rank">{String(item.activity_score).padStart(2,"0")}</span>
   <div class="spot-main"><div class="spot-topline"><span>{item.waterbody}</span><span class="activity-pill" data-activity-level={level.short}><i></i>{level.short}</span>{limited && <span class="data-quality">Данных мало</span>}</div><h3>{item.fish}</h3><div class="spot-meta"><span><FishingIcon name="pin" size={14}/> {item.x}:{item.y}</span><span><FishingIcon name="clock" size={14}/> {ago(item.last_confirmed_at)}</span></div><div class="source-strip" aria-label="Источники данных">{item.sources.map(source => <SourceBadge source={source}/>)}</div><p class="data-note">{item.explanation}</p><div class="bait-line"><FishingIcon name="lure" size={25}/><div><span>Работает сейчас</span><strong>{item.best_bait ?? "не указана"}</strong></div></div></div>
   <div class="spot-stats"><div><strong>{item.catches}</strong><span>{plural(item.catches, ["улов", "улова", "уловов"])}</span></div><div><strong>{item.unique_players}</strong><span>{plural(item.unique_players, ["игрок", "игрока", "игроков"])}</span></div><div><strong>{kg(item.average_weight_g)}</strong><span>средний вес</span></div><div><strong>{item.confidence_score}%</strong><span>уверенность</span></div></div><span class="card-arrow"><FishingIcon name="arrow" size={22}/></span>