Achievements overhaul: 37 achievements, page with tabs, leagues, gating

Achievements (client + server mirror, metric-driven so the list is one source):
- 37 achievements across 6 categories (Victories, Kot, Streaks, Levels, Ranks,
  Veterancy) incl. 7–0 sweeps, kot milestones (1/5/10/25/50/100), win streaks
  (3/5/10/15), level milestones every 5 (5..50), rank floors, games/tricks.
- New AchievementsScreen with category tabs, progress bars, coin + sticker-unlock
  badges, and unlocked/locked states; summary header (unlocked count + coins).
- Some achievements unlock sticker packs: Seven–Zip→Hokm, 25 Kots→Taunts,
  100 Wins→Persian (ownedStickerPackIds now also honors profile.unlocked).
- Prestige titles added: Expert, Professional, Captain, Leader (+ existing).
- Tracks new stat shutoutWins; MatchSummary.shutout (7–0). Profile shows a
  6-item preview + "view all" link.

Leagues: 3 ranked entry tiers — Starter (100, lvl1), Pro (500, lvl10),
Expert (1000, lvl20). Higher league stakes more, so wins/losses swing bigger;
kot bonus now scales to the stake (40%). OnlineLobby shows league cards with
level gating.

Profile photo upload gated to level 25 (client button + server Update guard).

Win animation: PostMatchRewardsModal now shows an animated coins-won count-up
hero on a win.

Verified: dotnet build + tsc + next build clean; sim unlocks 26 achievements
over 500 matches; live server grants first_win/first_kot/shutout_1 and pays
2050 coins on an expert-league shutout+kot win. Images rebuilt on :1500/:1505.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/sim.ts

@@ -85,7 +85,7 @@ function baseProfile(): UserProfile {
     rating: 1000,
     stats: {
       games: 0, wins: 0, losses: 0, kotsFor: 0, kotsAgainst: 0,
-      tricks: 0, bestWinStreak: 0, currentWinStreak: 0,
+      tricks: 0, bestWinStreak: 0, currentWinStreak: 0, shutoutWins: 0,
     },
     plan: "free",
     ownedAvatars: ["a-fox"],
@@ -122,6 +122,7 @@ for (let i = 0; i < M; i++) {
     tricksWon: won ? 7 + (i % 6) : i % 7,
     rounds: 7,
     trump: "spades",
+    shutout: won && i % 8 === 0,
   };
   const before = profile;
   const { profile: after, reward } = applyMatchResult(before, summary, 1000);
@@ -148,7 +149,7 @@ for (let i = 0; i < M; i++) {
 {
   const r = applyMatchResult(baseProfile(), {
     ranked: false, stake: 0, won: true, kotFor: false, kotAgainst: false,
-    tricksWon: 7, rounds: 7, trump: null,
+    tricksWon: 7, rounds: 7, trump: null, shutout: false,
   }, 1000);
   assert(r.reward.ratingDelta === 0, "casual match must not change rating");
 }