fix(launcher): resolve a11y warnings on economy card and member name buttons

launcher/src/pages/Stats.svelte

@@ -413,7 +413,8 @@
             {:else}
               <div class="econ-balances-grid">
                 {#each economyBalances as bal (bal.server_id)}
-                  <div
+                  <button
+                    type="button"
                     class="econ-balance-card glass"
                     class:selected={selectedEconomyServerId === bal.server_id}
                     onclick={() => handleEconomyServerChange(bal.server_id)}
@@ -429,7 +430,7 @@
                     <div class="econ-card-footer tiny muted">
                       Updated {formatDate(bal.last_updated)}
                     </div>
-                  </div>
+                  </button>
                 {/each}
               </div>
             {/if}
@@ -695,7 +696,7 @@
   .section-title { font-size: 1.05rem; font-weight: 700; }
   .empty-inline { padding: 1.2rem 0; }
   .econ-balances-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: 1rem; margin-top: 0.5rem; }
-  .econ-balance-card { display: flex; flex-direction: column; gap: 0.6rem; padding: 1.1rem 1.2rem; border-radius: var(--radius-sm); cursor: pointer; transition: transform 0.15s, border-color 0.15s; }
+  .econ-balance-card { display: flex; flex-direction: column; gap: 0.6rem; padding: 1.1rem 1.2rem; border-radius: var(--radius-sm); cursor: pointer; transition: transform 0.15s, border-color 0.15s; text-align: left; font: inherit; color: inherit; width: 100%; }
   .econ-balance-card:hover { transform: translateY(-2px); }
   .econ-balance-card.selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
   .server-badge { font-size: 0.82rem; font-weight: 700; color: var(--accent); }