fix: window counter review issues — opacity modifier, catch-up spam, rounding

- text-dim color uses <alpha-value> interpolation so dark:text-text-dim/70 works
- Multi-window catch-up jumps to correct window in one step (no log spam)
- formatWindowDuration uses Math.floor instead of Math.round

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/auth/account-pool.ts

@@ -430,16 +430,19 @@ export class AccountPool {
 
     // Auto-reset window counters when window has expired
     const windowResetAt = entry.usage.window_reset_at;
-    if (windowResetAt != null && now.getTime() / 1000 >= windowResetAt) {
+    const nowSec = now.getTime() / 1000;
+    if (windowResetAt != null && nowSec >= windowResetAt) {
       console.log(`[AccountPool] Window expired for ${entry.id} (${entry.email ?? "?"}), resetting window counters`);
       entry.usage.window_request_count = 0;
       entry.usage.window_input_tokens = 0;
       entry.usage.window_output_tokens = 0;
       entry.usage.window_counters_reset_at = now.toISOString();
-      // Estimate next window end using stored duration
+      // Jump to the correct current window (handles multi-window catch-up in one step)
       const windowSec = entry.usage.limit_window_seconds;
       if (windowSec && windowSec > 0) {
-        entry.usage.window_reset_at = windowResetAt + windowSec;
+        let nextReset = windowResetAt + windowSec;
+        while (nextReset <= nowSec) nextReset += windowSec;
+        entry.usage.window_reset_at = nextReset;
       } else {
         entry.usage.window_reset_at = null; // Wait for backend sync to correct
       }

web/src/utils/format.ts

@@ -6,14 +6,14 @@ export function formatNumber(n: number): string {
 
 export function formatWindowDuration(seconds: number, isZh: boolean): string {
   if (seconds >= 86400) {
-    const days = Math.round(seconds / 86400);
+    const days = Math.floor(seconds / 86400);
     return isZh ? `${days}天` : `${days}d`;
   }
   if (seconds >= 3600) {
-    const hours = Math.round(seconds / 3600);
+    const hours = Math.floor(seconds / 3600);
     return isZh ? `${hours}小时` : `${hours}h`;
   }
-  const minutes = Math.round(seconds / 60);
+  const minutes = Math.floor(seconds / 60);
   return isZh ? `${minutes}分钟` : `${minutes}m`;
 }
 

web/tailwind.config.ts

@@ -13,7 +13,7 @@ export default {
         "card-dark": "#161b22",
         "border-dark": "#30363d",
         "text-main": "#e6edf3",
-        "text-dim": "#8b949e",
+        "text-dim": "rgb(139 148 158 / <alpha-value>)",
       },
       fontFamily: {
         display: [