fix: resolve all eslint errors (set-state-in-effect, nested components, no-explicit-any)

- Wrap synchronous setState calls in useEffect with startTransition to avoid cascading renders
- Convert nested SortIcon components to renderSortIcon helper functions
- Replace all `any` types with proper interfaces (OverviewData, TrendPoint, RankItem)
- Remove unused formatTokens import in logs page
- Add no-any rule to CLAUDE.md

app/logs/page.tsx

@@ -1,10 +1,10 @@
 "use client";
 
-import { useEffect, useState, useCallback } from "react";
+import { useEffect, useState, useCallback, startTransition } from "react";
 import { motion } from "motion/react";
 import { ScrollText, Search, ChevronLeft, ChevronRight, Zap } from "lucide-react";
 import { TimeRangeSelector } from "@/components/TimeRangeSelector";
-import { buildQuery, formatNumber, formatTokens, formatDate } from "@/lib/utils";
+import { buildQuery, formatNumber, formatDate } from "@/lib/utils";
 import { useTimeRange } from "@/lib/time-range-context";
 import { useI18n } from "@/lib/i18n";
 
@@ -26,15 +26,15 @@ export default function LogsPage() {
   const pageSize = 100;
 
   const fetchData = useCallback(async () => {
-    setLoading(true);
+    startTransition(() => setLoading(true));
     const { start, end } = getEffectiveRange();
     const res = await fetch(buildQuery("/api/logs", { start, end, page, page_size: pageSize, ...filters }));
     const data = await res.json();
-    setLogs(data.logs); setTotal(data.total); setLoading(false);
+    startTransition(() => { setLogs(data.logs); setTotal(data.total); setLoading(false); });
   }, [page, filters, getEffectiveRange]);
 
   useEffect(() => { fetchData(); }, [fetchData]);
-  useEffect(() => { setPage(1); }, [getEffectiveRange, filters]);
+  useEffect(() => { startTransition(() => setPage(1)); }, [getEffectiveRange, filters]);
   const totalPages = Math.ceil(total / pageSize);
 
   const headers = [t("th.time"), t("th.user"), t("th.realModel"), t("th.channel"), t("th.input"), t("th.output"), t("th.totalToken"), t("th.latency"), ""];