diff --git a/plugins/jsc-statusbar/.claude-plugin/plugin.json b/plugins/jsc-statusbar/.claude-plugin/plugin.json
index 0782a61..2317b5f 100644
--- a/plugins/jsc-statusbar/.claude-plugin/plugin.json
+++ b/plugins/jsc-statusbar/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "jsc-statusbar",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "輸入框上方的單行狀態列：模型、目錄、分支、5h/7d 額度與重置、context、CPU/記憶體/磁碟",
   "license": "MIT",
   "types": "./types/index.d.ts",
diff --git a/plugins/jsc-statusbar/hooks/register.tsx b/plugins/jsc-statusbar/hooks/register.tsx
index 4788157..c76d676 100644
--- a/plugins/jsc-statusbar/hooks/register.tsx
+++ b/plugins/jsc-statusbar/hooks/register.tsx
@@ -1,7 +1,7 @@
 import { atom, read, update } from 'claude-code'
 import type { EngineInterface, Register, SessionContextUsage, SessionRateLimit } from 'claude-code'
 
-import type { Mode, Sys, Usage } from '../types'
+import type { Mode, Sys, Usage, Window } from '../types'
 import { fit, cpuPercent, parseCpu, parseDf, parseGit, parseMem, parseOffset } from './format'
 import type { CpuSample } from './format'
 
@@ -19,6 +19,7 @@ const ALERT_AT = 90
 const GIT_TOOLS = new Set(['Bash', 'Edit', 'Write', 'NotebookEdit'])
 const LABEL: Record<string, string> = { five_hour: '5 小時', seven_day: '7 天' }
 
+// 引擎要等第一次 API 回應才有額度與 ctx；先前的額度存在 $.store，開新對話時先顯示，ctx 先當作 0
 function toUsage(context: SessionContextUsage, rateLimits: SessionRateLimit[]): Usage {
   const win = (kind: string) => {
     const r = rateLimits.find(x => x.kind === kind)
@@ -27,9 +28,25 @@ function toUsage(context: SessionContextUsage, rateLimits: SessionRateLimit[]):
   return {
     fiveHour: win('five_hour'),
     sevenDay: win('seven_day'),
-    ctxTokens: context.tokens,
+    ctxTokens: context.tokens ?? 0,
     ctxWindow: context.window,
-    ctxPercent: context.percent,
+    ctxPercent: context.percent ?? 0,
+  }
+}
+
+// 已過重置時間的視窗用量已歸零，不再沿用舊值
+const live = (w: Window | undefined, now: number) =>
+  w && (!w.resetsAt || Date.parse(w.resetsAt) > now) ? w : undefined
+
+async function restoreRates($: EngineInterface, usage: Usage): Promise<Usage> {
+  const saved = (await $.store.get('rates')) as Pick<Usage, 'fiveHour' | 'sevenDay'> | undefined
+  if (!saved) return usage
+  const now = await $.clock.now()
+
+  return {
+    ...usage,
+    fiveHour: usage.fiveHour ?? live(saved.fiveHour, now),
+    sevenDay: usage.sevenDay ?? live(saved.sevenDay, now),
   }
 }
 
@@ -104,9 +121,11 @@ export const register: Register = on => {
       tzOffsetMin = parseOffset(r.stdout)
     } catch {}
     const u = await $.session.usage()
-    await update($, usageAtom, () => toUsage(u.context, u.rateLimits))
+    const usage = await restoreRates($, toUsage(u.context, u.rateLimits))
+    await update($, usageAtom, () => usage)
     void refreshGit($)
-    void refreshSys($)
+    // CPU 要兩次取樣才算得出來，開場先隔 0.5 秒補一次，免得等到 3 秒後才出現
+    void refreshSys($).then(() => $.clock.after(500, () => void refreshSys($)))
     $.clock.every(SYS_MS, () => void refreshSys($))
     $.clock.every(GIT_MS, () => void refreshGit($))
 
@@ -115,6 +134,11 @@ export const register: Register = on => {
 
   on('session.measure', async ($, e, next) => {
     await update($, usageAtom, () => toUsage(e.context, e.rateLimits))
+    if (e.rateLimits.length) {
+      const w = (kind: string) => e.rateLimits.find(x => x.kind === kind)
+      const pick = (r: SessionRateLimit | undefined) => r && { percent: r.percentUsed, resetsAt: r.resetsAt }
+      await $.store.set('rates', { fiveHour: pick(w('five_hour')), sevenDay: pick(w('seven_day')) })
+    }
     if (e.changed.includes('rateLimits')) await alert($, e.rateLimits)
 
     return next(e)