diff --git a/CHANGELOG.md b/CHANGELOG.md
index e2fba94..c4628bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,34 @@
 
 All notable changes to this project are documented here. The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and the project uses [Semantic Versioning](https://semver.org/). 中文版见 [CHANGELOG_ZH.md](./CHANGELOG_ZH.md).
 
+## [1.1.6] - 2026-09-19
+
+### Fixed
+
+- **Host pricing file source lifecycle (`pricing.json` override & change watcher)** — [PR #10](https://github.com/Max-Samson/dsh-usage-chart/pull/10):
+  - Fixed premature disposal of `filePricingSource` during plugin registration: `ctx.effect(() => fileSource.dispose(), ...)` called `dispose()` synchronously while building the fiber and registered `undefined` as the cleanup handler, aborting initial asynchronous file loading and disabling the file change watcher. Resolved by returning a disposer function: `ctx.effect(() => () => fileSource.dispose(), ...)`.
+  - Updated test mocks in `tests/core.test.mjs`, `tests/pricing.test.mjs`, and `tests/rounds.test.mjs` to properly track and execute Cordis effect disposers in `after()`.
+  - Added regression test covering the `/pricing` route with user `pricing.json` overrides enabled at startup.
+
+## [1.1.5] - 2026-09-12
+
+### Changed
+
+- **DeepSeek official pricing update (2026-09-10) & `deepseek-flash` support** — [PR #8](https://github.com/Max-Samson/dsh-usage-chart/pull/8):
+  - **New `deepseek-flash` model pricing**: Updated builtin pricing according to the official DeepSeek pricing table (verified 2026-09-10). The new `deepseek-flash` rates are:
+    - **Off-peak** (Beijing Mon–Fri non-peak & weekends): CNY 1.0 / 0.02 / 4.0 per 1M tokens (cache-miss input / cache-hit input / output); USD 0.15 / 0.003 / 0.6 per 1M tokens.
+    - **Peak** (Beijing Mon–Fri 09:00–12:00 & 14:00–18:00): CNY 2.0 / 0.04 / 8.0 per 1M tokens; USD 0.30 / 0.006 / 1.2 per 1M tokens.
+  - **Backward compatibility for legacy model names**: `deepseek-v4-flash` and `deepseek-v4-flash-vision-exp` are mapped to `deepseek-flash` in `BUILTIN_PRICING` so historical session logs continue resolving without falling back to unknown-model estimates.
+  - **Fallback pricing**: Default unlisted model fallback (`FALLBACK_PRICING`) now points to the new `deepseek-flash` pricing.
+  - **Docs & test synchronization**: Updated custom `pricing.json` example in `README.md` and `README_ZH.md` (`verifiedAt: 1788998400000`), and aligned test cases across `tests/core.test.mjs`, `tests/pricing.test.mjs`, and `tests/rounds.test.mjs` (`BUILTIN_VERIFIED_AT` set to `2026-09-10T00:00:00Z`).
+
+## [1.1.4] - 2026-09-08
+
+### Fixed
+
+- **`dsh-session >= 0.1.2-rc.1` compatibility (snapshotEvents())** — [PR #7](https://github.com/Max-Samson/dsh-usage-chart/pull/7): `dsh-session` removed its public `events` property in `0.1.2-rc.1` (replaced by the `snapshotEvents()` method); the `/usage` route then threw `TypeError: events is not iterable`, which `dsh-host-webserver` wrapped as a bare `400` empty response, and the per-round chart disappeared (the client fell back to the empty observed-rounds path). Reproduced live on `dsh-session 0.1.2-rc.1`: `/usage?session=<loaded>` returned an empty `400` while `/usage?session=<unknown>` returned the plugin `404` JSON and folding the same log offline succeeded — confirming the crash was only the new runtime API shape. The host now reads events via capability detection — prefers `session.snapshotEvents()` when the function is present and falls back to the legacy `session.events ?? []` (so a missing API can never crash the route again). The vendored `SessionEventLike` type adds the `time` field (Unix epoch ms) and a `SessionHandle` shape (optional `events` + optional `snapshotEvents`) so `SessionStoreService.get()/list()` stay valid across both API generations. Verified against the upstream `deepseek-harness` source: `Session.events` was removed from `0.1.2-alpha.4` onward (official architecture note `2026-08-21-session-log-read-intent`); the installed `0.1.0-rc.6` still exposes `events`, so the fallback path remains covered.
+- **Test coverage for the new `snapshotEvents()` access path**: added `tests/rounds.test.mjs` → `/usage route prefers snapshotEvents() when the new API is present`, mocking a session handle that exposes only `snapshotEvents()` (its `get events()` throws, proving the route never reads the removed property), asserts `time` is consumed (duration/peak billing) and that `snapshotEvents()` wins when both APIs are present.
+
 ## [1.1.2] - 2026-08-26
 
 ### Improved & Fixed
diff --git a/CHANGELOG_ZH.md b/CHANGELOG_ZH.md
index b4f5c49..60d43b4 100644
--- a/CHANGELOG_ZH.md
+++ b/CHANGELOG_ZH.md
@@ -2,6 +2,34 @@
 
 本文件记录本项目所有重要变更。格式遵循 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.1.0/)，
 版本号遵循 [语义化版本](https://semver.org/lang/zh-CN/)。英文版见 [CHANGELOG.md](./CHANGELOG.md)。
+## [1.1.6] - 2026-09-19
+
+### 修复
+
+- **宿主自定义价格文件源生命周期早释问题（`pricing.json` 覆盖与变更监听）**——[PR #10](https://github.com/Max-Samson/dsh-usage-chart/pull/10)：
+  - **修复 `filePricingSource` 启动即被销毁的 Bug**：此前 `ctx.effect(() => fileSource.dispose(), ...)` 在挂载期立即执行了清理调用，导致文件数据源在首次异步读取完成前被截断关闭，致使用户配置的 `pricing.json` 覆盖及变更监听均无法生效。现已修正为返回高阶清理函数 `ctx.effect(() => () => fileSource.dispose(), ...)`，使文件源在 fiber 卸载时才被释放。
+  - **纠正单测 Cordis effect Mock 语义**：在 `tests/core.test.mjs`、`tests/pricing.test.mjs` 与 `tests/rounds.test.mjs` 中对齐 Cordis 真实生命周期契约，在 `after()` 中统一执行清理函数。
+  - **补充端到端回归用例**：新增 `/pricing route serves the user pricing.json override (file source survives startup)`，验证插件挂载自定义 `pricing.json` 时价格覆盖正常生效且来源正确标记为 `file`。
+
+
+## [1.1.5] - 2026-09-12
+
+### 变更与优化
+
+- **同步 DeepSeek 官方最新调价（2026-09-10）与 `deepseek-flash` 适配**——[PR #8](https://github.com/Max-Samson/dsh-usage-chart/pull/8)：
+  - **新增 `deepseek-flash` 官方刊例价**：按 DeepSeek 官方 2026-09-10 最新调价更新内置定价表，`deepseek-flash` 刊例价全面下调：
+    - **空闲时段**（北京时间工作日非高峰与周末全天）：人民币 CNY 1.0 / 0.02 / 4.0 每 1M tokens（未命中输入 / 命中输入 / 输出）；美元 USD 0.15 / 0.003 / 0.6 每 1M tokens。
+    - **高峰时段**（北京时间工作日 09:00–12:00 与 14:00–18:00）：人民币 CNY 2.0 / 0.04 / 8.0 每 1M tokens；美元 USD 0.30 / 0.006 / 1.2 每 1M tokens。
+  - **历史模型标识平滑兼容**：将 `deepseek-v4-flash` 与 `deepseek-v4-flash-vision-exp` 指向 `deepseek-flash` 价格表，确保历史会话在重新加载与折叠时平滑解析，不被判定为未定价模型。
+  - **未收录模型回退**：未收录模型的默认保守估算回退（`FALLBACK_PRICING`）同步切换至新版 `deepseek-flash` 刊例价。
+  - **文档与测试同步**：更新 README 中的 `pricing.json` 自定义配置示例与核验时间戳（`verifiedAt: 1788998400000` 即 2026-09-10）；全量同步 core、pricing、rounds 单测断言与 `BUILTIN_VERIFIED_AT`。
+
+## [1.1.4] - 2026-09-08
+
+### 修复
+
+- **适配 `dsh-session >= 0.1.2-rc.1`（改用 `snapshotEvents()`）**——[PR #7](https://github.com/Max-Samson/dsh-usage-chart/pull/7)：`dsh-session` 在 `0.1.2-rc.1` 移除了公开的 `events` 属性（改为 `snapshotEvents()` 方法）；`/usage` 路由随之抛 `TypeError: events is not iterable`，被 `dsh-host-webserver` 包装成裸 `400` 空响应，每轮图表消失（客户端回退到空的 observed-rounds 路径）。已在 `dsh-session 0.1.2-rc.1` 上实测复现：`/usage?session=<已加载会话>` 返回空 `400`、`/usage?session=<未知>` 返回插件 `404` JSON、离线折叠同一日志却成功——证明崩溃仅源于新版运行时 API 形状。宿主现在通过能力检测读取事件——`snapshotEvents` 为函数时优先调用它，否则回退到旧版 `session.events ?? []`（即便 API 缺失也绝不再导致路由崩溃）。同时为 vendored 的 `SessionEventLike` 类型补齐 `time` 字段（Unix epoch 毫秒），并新增 `SessionHandle` 形状（可选 `events` + 可选 `snapshotEvents`），使 `SessionStoreService.get()/list()` 在新旧两代 API 下均成立。已对照上游 `deepseek-harness` 源码核实：`Session.events` 自 `0.1.2-alpha.4` 起移除（官方架构笔记 `2026-08-21-session-log-read-intent`）；本机安装的 `0.1.0-rc.6` 仍暴露 `events`，因此回退分支持续有覆盖。
+- **为新的 `snapshotEvents()` 读取路径补充测试**：新增 `tests/rounds.test.mjs` → `/usage route prefers snapshotEvents() when the new API is present`，mock 一个只暴露 `snapshotEvents()` 的会话句柄（其 `get events()` 会抛错，证明路由绝不读取被移除的属性），断言 `time` 被正确消费（耗时/峰值计费），并验证同时暴露两者时优先使用 `snapshotEvents()`。
 
 ## [1.1.2] - 2026-08-26
 
diff --git a/README.md b/README.md
index d224a2c..bb45e8c 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ To update (upgrade to a new version): pnpm may print `Already up to date` when a
 
 ```sh
 # Option ①: pin the target version explicitly
-dsh plugin --profile web add dsh-usage-chart@1.1.2
+dsh plugin --profile web add dsh-usage-chart@1.1.6
 # Option ②: remove, then re-add (back to latest)
 dsh plugin --profile web remove dsh-usage-chart
 dsh plugin --profile web add dsh-usage-chart
@@ -148,16 +148,16 @@ Costs are resolved with priority **user override file > builtin list price > fal
 
 ```json
 {
-  "deepseek-v4-flash": {
+  "deepseek-flash": {
     "offPeak": {
-      "cny": { "cacheMissInput": 1.5, "cacheHitInput": 0.05, "output": 4.5 },
-      "usd": { "cacheMissInput": 0.22, "cacheHitInput": 0.007, "output": 0.66 }
+      "cny": { "cacheMissInput": 1, "cacheHitInput": 0.02, "output": 4 },
+      "usd": { "cacheMissInput": 0.15, "cacheHitInput": 0.003, "output": 0.6 }
     },
     "peak": {
-      "cny": { "cacheMissInput": 3.0, "cacheHitInput": 0.10, "output": 9.0 },
-      "usd": { "cacheMissInput": 0.44, "cacheHitInput": 0.014, "output": 1.32 }
+      "cny": { "cacheMissInput": 2, "cacheHitInput": 0.04, "output": 8 },
+      "usd": { "cacheMissInput": 0.3, "cacheHitInput": 0.006, "output": 1.2 }
     },
-    "verifiedAt": 1755100800000
+    "verifiedAt": 1788998400000
   }
 }
 ```
@@ -278,7 +278,7 @@ dsh-usage-chart/
 
 | Component | Supported |
 |---|---|
-| DSH | ≥ 0.1.0-rc.6, built against the 0.1.x API |
+| DSH | ≥ 0.1.0-rc.6, built against the 0.1.x API; adapts to the `dsh-session` `snapshotEvents()` API — `Session.events` was removed in `0.1.2-rc.1`, so the `/usage` route reads events via `snapshotEvents()` with a legacy `events` fallback |
 | Node.js | ≥ 20 |
 | Web UI | React 18 / `conversation.composer.dock` + `conversation.chat.assistant-actions` |
 | OS | macOS, Linux, Windows (pure JavaScript, no native dependencies) |
diff --git a/README_ZH.md b/README_ZH.md
index 1688e25..19aa7d6 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -78,7 +78,7 @@ dsh web --profile web                          # 启动 DSH Web（已在运行
 
 ```sh
 # 方式①：显式指定目标版本
-dsh plugin --profile web add dsh-usage-chart@1.1.2
+dsh plugin --profile web add dsh-usage-chart@1.1.6
 # 方式②：先移除再重装（回到最新版）
 dsh plugin --profile web remove dsh-usage-chart
 dsh plugin --profile web add dsh-usage-chart
@@ -91,7 +91,7 @@ dsh plugin --profile web add dsh-usage-chart
 
 > ⚠️ **未全局安装 dsh（报 `dsh: command not found` / PowerShell `无法将“dsh”项识别为…`）？
 > 把上面每条 `dsh` 都写成 `npx --yes @deepseek-ai/dsh`**，例如
-> `npx --yes @deepseek-ai/dsh plugin --profile web add dsh-usage-chart@1.1.2`
+> `npx --yes @deepseek-ai/dsh plugin --profile web add dsh-usage-chart@1.1.6`
 > （原因与解法见 [FAQ](#常见问题faq) 第一条）。
 
 ### 方式二：从 GitHub 安装（源码构建）
@@ -168,16 +168,16 @@ dsh web --profile web
 
 ```json
 {
-  "deepseek-v4-flash": {
+  "deepseek-flash": {
     "offPeak": {
-      "cny": { "cacheMissInput": 1.5, "cacheHitInput": 0.05, "output": 4.5 },
-      "usd": { "cacheMissInput": 0.22, "cacheHitInput": 0.007, "output": 0.66 }
+      "cny": { "cacheMissInput": 1, "cacheHitInput": 0.02, "output": 4 },
+      "usd": { "cacheMissInput": 0.15, "cacheHitInput": 0.003, "output": 0.6 }
     },
     "peak": {
-      "cny": { "cacheMissInput": 3.0, "cacheHitInput": 0.10, "output": 9.0 },
-      "usd": { "cacheMissInput": 0.44, "cacheHitInput": 0.014, "output": 1.32 }
+      "cny": { "cacheMissInput": 2, "cacheHitInput": 0.04, "output": 8 },
+      "usd": { "cacheMissInput": 0.3, "cacheHitInput": 0.006, "output": 1.2 }
     },
-    "verifiedAt": 1755100800000
+    "verifiedAt": 1788998400000
   }
 }
 ```
@@ -331,7 +331,7 @@ dsh-usage-chart/
 
 | 组件 | 支持范围 |
 |---|---|
-| DSH | ≥ 0.1.0-rc.6，当前按 0.1.x API 构建 |
+| DSH | ≥ 0.1.0-rc.6，当前按 0.1.x API 构建；已适配 `dsh-session` 的 `snapshotEvents()` API——`Session.events` 自 `0.1.2-rc.1` 起移除，`/usage` 路由通过 `snapshotEvents()` 读取事件，并保留旧版 `events` 属性回退 |
 | Node.js | ≥ 20 |
 | Web UI | React 18 / `conversation.composer.dock` + `conversation.chat.assistant-actions` |
 | 系统 | macOS、Linux、Windows（纯 JavaScript，无原生依赖） |
diff --git a/package-lock.json b/package-lock.json
index 5f7da2e..33d0f6b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dsh-usage-chart",
-  "version": "1.1.2",
+  "version": "1.1.6",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dsh-usage-chart",
-      "version": "1.1.2",
+      "version": "1.1.6",
       "license": "MIT",
       "devDependencies": {
         "@deepseek-ai/cordis": "^4.0.1",
diff --git a/package.json b/package.json
index ff30dfa..d3b90d8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dsh-usage-chart",
-  "version": "1.1.2",
+  "version": "1.1.6",
   "description": "DeepSeek 用量 / 成本 / 余额仪表盘 for DSH Web：输入框下方实时指标指示器 + 零依赖 SVG 用量可视化图表（含每轮成本视角、耗时叠加、异常标记、成本徽章、上下文压力条），token 数据来自官方 adapter 上报，成本按官方刊例价 + 用户覆盖 pricing.json 解析，余额来自官方 /user/balance 接口。",
   "type": "module",
   "sideEffects": false,
diff --git a/src/client/UsageIndicator.tsx b/src/client/UsageIndicator.tsx
index 30c9877..56b6aed 100644
--- a/src/client/UsageIndicator.tsx
+++ b/src/client/UsageIndicator.tsx
@@ -50,6 +50,23 @@ function ChartIcon(): JSX.Element {
   )
 }
 
+/**
+ * fixed 定位的包含块：任一 transform/filter/contain 祖先都会把定位基准从视口改成它自己
+ * （皮肤给 dock 子元素加了 backdrop-filter，面板随之整体偏移）。
+ */
+function containingBlock(start: HTMLElement): Element | null {
+  // 属性可能不存在（旧浏览器）：undefined 一律按「不创建包含块」处理。
+  const creates = (value: string | undefined): boolean => value !== undefined && value !== 'none' && value !== 'normal'
+  for (let node: Element | null = start; node !== null && node !== document.documentElement; node = node.parentElement) {
+    const style = getComputedStyle(node)
+    if (creates(style.transform) || creates(style.translate) || creates(style.rotate) || creates(style.scale)
+      || creates(style.perspective) || creates(style.filter) || creates(style.backdropFilter)
+      || creates(style.contain) || creates(style.containerType)
+      || /transform|perspective|filter/.test(style.willChange)) return node
+  }
+  return null
+}
+
 export function UsageIndicator(props: DockUsageProps): JSX.Element | null {
   const { useSession, useProjection, sessionId } = props
   const locale = useUiLocale()
@@ -89,8 +106,14 @@ export function UsageIndicator(props: DockUsageProps): JSX.Element | null {
     if (el === null) return
     const r = el.getBoundingClientRect()
     const width = Math.min(Math.max(r.width, 320), 520, window.innerWidth - 16)
-    const left = Math.min(Math.max(8, r.left), window.innerWidth - width - 8)
-    setAnchor({ left, width, bottom: window.innerHeight - r.top + 8 })
+    const left = Math.min(Math.max(8, r.left), Math.max(8, window.innerWidth - width - 8))
+    // 视口坐标 → 包含块坐标：面板是 fixed，祖先有 transform/filter/contain 时 left/bottom 以它为准。
+    const base = containingBlock(el)?.getBoundingClientRect()
+    setAnchor({
+      left: left - (base?.left ?? 0),
+      width,
+      bottom: (base?.bottom ?? window.innerHeight) - r.top + 8,
+    })
   }, [])
 
   useLayoutEffect(() => {
diff --git a/src/index.ts b/src/index.ts
index 5ef5eb6..eee6186 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -364,7 +364,8 @@ export function apply(ctx: Context, config: Config = {}): void {
   const pricingFile = config.pricingFile?.trim() || defaultPricingFile()
   const fileSource = filePricingSource(pricingFile)
   const resolver = createPricingResolver(fileSource)
-  ctx.effect(() => fileSource.dispose(), 'dsh-usage-chart: pricing file watcher')
+  // 注意返回的是「返回 disposer 的函数」：写成 () => fileSource.dispose() 会在注册时立刻销毁文件源。
+  ctx.effect(() => () => fileSource.dispose(), 'dsh-usage-chart: pricing file watcher')
 
   ctx.effect(() => ctx.webServer.register({
     kind: 'exact',
diff --git a/src/pricing/source.ts b/src/pricing/source.ts
index 8794d9b..70af990 100644
--- a/src/pricing/source.ts
+++ b/src/pricing/source.ts
@@ -31,23 +31,25 @@ export interface PricingSource {
 
 /**
  * 当前官方在售模型定价表（双币种 / 1M tokens，区分高峰/空闲时段）。
- * 来源：官方定价页（2026-08-26 核验）
+ * 来源：官方定价页（2026-09-10 核验）
  *  - 中文页 https://api-docs.deepseek.com/zh-cn/quick_start/pricing（CNY 报价）
  *  - 英文页 https://api-docs.deepseek.com/quick_start/pricing（USD 报价）
  * 高峰时段（北京时间周一至周五 09:00–12:00、14:00–18:00 = UTC 01:00–04:00、06:00–10:00）
  * 价格为空闲时段的两倍。
  */
-export const BUILTIN_PRICING: Record<string, ModelPricing> = {
-  'deepseek-v4-flash': {
-    offPeak: {
-      cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-      usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
-    },
-    peak: {
-      cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-      usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
-    },
+const FLASH_PRICING: ModelPricing = {
+  offPeak: {
+    cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+    usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
   },
+  peak: {
+    cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+    usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
+  },
+}
+
+export const BUILTIN_PRICING: Record<string, ModelPricing> = {
+  'deepseek-flash': FLASH_PRICING,
   'deepseek-v4-pro': {
     offPeak: {
       cny: { cacheMissInput: 4.5, cacheHitInput: 0.15, output: 13.5 },
@@ -58,23 +60,21 @@ export const BUILTIN_PRICING: Record<string, ModelPricing> = {
       usd: { cacheMissInput: 1.32, cacheHitInput: 0.044, output: 3.96 },
     },
   },
-  'deepseek-v4-flash-vision-exp': {
-    offPeak: {
-      cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-      usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
-    },
-    peak: {
-      cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-      usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
-    },
-  },
 }
 
-/** 内置表的核验日期（来源：官方定价页中/英文版，2026-08-26 抓取核验）。 */
-export const BUILTIN_VERIFIED_AT = Date.parse('2026-08-26T00:00:00Z')
+/**
+ * 旧模型名兼容：
+ *  - `deepseek-v4-flash` / `deepseek-v4-flash-vision-exp` 已并入 `deepseek-flash`，
+ *    仍按同一价格表解析，避免历史会话突然变成「未定价模型」。
+ */
+BUILTIN_PRICING['deepseek-v4-flash'] = FLASH_PRICING
+BUILTIN_PRICING['deepseek-v4-flash-vision-exp'] = FLASH_PRICING
+
+/** 内置表的核验日期（来源：官方定价页中/英文版，2026-09-10 抓取核验）。 */
+export const BUILTIN_VERIFIED_AT = Date.parse('2026-09-10T00:00:00Z')
 
-/** 未收录模型回退：按 deepseek-v4-flash 刊例价估算并标记 ≈。 */
-export const FALLBACK_PRICING: ModelPricing = BUILTIN_PRICING['deepseek-v4-flash']
+/** 未收录模型回退：按 deepseek-flash 刊例价估算并标记 ≈。 */
+export const FALLBACK_PRICING: ModelPricing = FLASH_PRICING
 
 /** 前缀匹配（如带日期后缀的模型版本）；精确匹配优先。 */
 function matchEntry<T>(table: Record<string, T>, model: string): T | null {
diff --git a/tests/core.test.mjs b/tests/core.test.mjs
index 2e69469..30d3b1e 100644
--- a/tests/core.test.mjs
+++ b/tests/core.test.mjs
@@ -1,5 +1,5 @@
 import assert from 'node:assert/strict'
-import test from 'node:test'
+import test, { after } from 'node:test'
 
 import {
   DEFAULT_CNY_PER_USD,
@@ -16,6 +16,10 @@ import {
   normalizeCurrency,
 } from '../lib/index.js'
 
+/** cordis 语义：effect(setup) 立即执行 setup，把返回的 disposer 留到 fiber 销毁时再调用。 */
+const disposers = []
+after(() => { for (const dispose of disposers) if (typeof dispose === 'function') dispose() })
+
 function responseRecorder() {
   return {
     headers: {},
@@ -30,7 +34,7 @@ function responseRecorder() {
 function mountedRoutes(events = [], config = {}) {
   const routes = new Map()
   apply({
-    effect(setup) { setup() },
+    effect(setup) { disposers.push(setup()) },
     get() { return undefined },
     webServer: {
       register(route) { routes.set(route.path, route); return () => {} },
@@ -72,17 +76,18 @@ test('foldTurnUsage ignores malformed or negative usage samples', () => {
 })
 
 test('pricing matches the documented DeepSeek V4 prices (CNY + USD, peak/off-peak)', () => {
-  assert.deepEqual(PRICING['deepseek-v4-flash'], {
+  assert.deepEqual(PRICING['deepseek-flash'], {
     offPeak: {
-      cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-      usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
+      cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+      usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
     },
     peak: {
-      cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-      usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
+      cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+      usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
     },
   })
-  assert.deepEqual(PRICING['deepseek-v4-flash-vision-exp'], PRICING['deepseek-v4-flash'])
+  assert.deepEqual(PRICING['deepseek-v4-flash'], PRICING['deepseek-flash'])
+  assert.deepEqual(PRICING['deepseek-v4-flash-vision-exp'], PRICING['deepseek-flash'])
   assert.equal(cacheHitPercent({ uncachedInputTokens: 50, outputTokens: 0, cacheReadTokens: 50, cacheWriteTokens: 0 }), 50)
   // 时刻未知 → 高峰价保守估算：1M 未命中输入 + 1M 输出（v4-pro 高峰 CNY = 9 + 27）
   assert.equal(estimateCost({ uncachedInputTokens: 1_000_000, outputTokens: 1_000_000, cacheReadTokens: 0, cacheWriteTokens: 0 }, 'deepseek-v4-pro').cny, 36)
@@ -125,7 +130,7 @@ test('mounted Host routes enforce method and browser-origin guards', async () =>
 async function balanceResponse(extraCtx = {}, config = {}) {
   const routes = new Map()
   apply({
-    effect(setup) { setup() },
+    effect(setup) { disposers.push(setup()) },
     get(name) { return name === 'credentials' ? extraCtx.credentials : undefined },
     webServer: { register(route) { routes.set(route.path, route); return () => {} } },
     sessions: { get() { return undefined } },
diff --git a/tests/pricing.test.mjs b/tests/pricing.test.mjs
index ca02855..e1f9cbf 100644
--- a/tests/pricing.test.mjs
+++ b/tests/pricing.test.mjs
@@ -2,7 +2,7 @@ import assert from 'node:assert/strict'
 import { mkdtemp, writeFile, rm } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
-import test from 'node:test'
+import test, { after } from 'node:test'
 
 import {
   BUILTIN_VERIFIED_AT,
@@ -19,14 +19,18 @@ import {
   tierAt,
 } from '../lib/index.js'
 
-/** 2026-08-26 内置刊例价（双币种 /1M，高峰/空闲）。 */
+/** cordis 语义：effect(setup) 立即执行 setup，把返回的 disposer 留到 fiber 销毁时再调用。 */
+const disposers = []
+after(() => { for (const dispose of disposers) if (typeof dispose === 'function') dispose() })
+
+/** 2026-09-10 内置刊例价（双币种 /1M，高峰/空闲）。 */
 const FLASH_OFF_PEAK = {
-  cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-  usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
+  cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+  usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
 }
 const FLASH_PEAK = {
-  cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-  usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
+  cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+  usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
 }
 const PRO_OFF_PEAK = {
   cny: { cacheMissInput: 4.5, cacheHitInput: 0.15, output: 13.5 },
@@ -42,9 +46,10 @@ test('builtin source resolves exact and prefixed models, misses unknown', () =>
   assert.deepEqual(source.resolve('deepseek-v4-pro').pricing.offPeak, PRO_OFF_PEAK)
   assert.deepEqual(source.resolve('deepseek-v4-pro').pricing.peak, PRO_PEAK)
   // 前缀匹配（带日期后缀的模型版本）
-  assert.equal(source.resolve('deepseek-v4-flash-2026-08-01').pricing.offPeak.cny.output, 4.5)
-  assert.equal(source.resolve('deepseek-v4-flash-2026-08-01').pricing.offPeak.usd.output, 0.66)
-  assert.equal(source.resolve('deepseek-v4-flash-2026-08-01').pricing.peak.usd.output, 1.32)
+  assert.equal(source.resolve('deepseek-flash-2026-09-01').pricing.offPeak.cny.output, 4)
+  assert.equal(source.resolve('deepseek-flash-2026-09-01').pricing.offPeak.usd.output, 0.6)
+  assert.equal(source.resolve('deepseek-flash-2026-09-01').pricing.peak.usd.output, 1.2)
+  assert.deepEqual(source.resolve('deepseek-flash').pricing, { offPeak: FLASH_OFF_PEAK, peak: FLASH_PEAK })
   assert.deepEqual(source.resolve('deepseek-v4-flash-vision-exp').pricing.offPeak, FLASH_OFF_PEAK)
   assert.deepEqual(source.resolve('deepseek-v4-flash-vision-exp').pricing.peak, FLASH_PEAK)
   assert.equal(source.resolve('unknown-model').pricing, null)
@@ -106,12 +111,12 @@ test('costSplitAt bills in both official currencies per tier', () => {
   const usage = { uncachedInputTokens: 1_000_000, outputTokens: 1_000_000, cacheReadTokens: 0, cacheWriteTokens: 0 }
   const offPeakAt = Date.UTC(1970, 0, 1, 0, 0, 0) // 北京时间 08:00
   const peakAt = Date.UTC(1970, 0, 1, 2, 0, 0) // 北京时间 10:00
-  // 空闲：flash 未命中 1.5 + 输出 4.5（CNY）；0.22 + 0.66（USD）
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], offPeakAt, 'cny'), { input: 1.5, cacheRead: 0, output: 4.5, total: 6 })
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], offPeakAt, 'usd'), { input: 0.22, cacheRead: 0, output: 0.66, total: 0.88 })
+  // 空闲：flash 未命中 1 + 输出 4（CNY）；0.15 + 0.6（USD）
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], offPeakAt, 'cny'), { input: 1, cacheRead: 0, output: 4, total: 5 })
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], offPeakAt, 'usd'), { input: 0.15, cacheRead: 0, output: 0.6, total: 0.75 })
   // 高峰 = 空闲 × 2
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], peakAt, 'cny'), { input: 3, cacheRead: 0, output: 9, total: 12 })
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], peakAt, 'usd'), { input: 0.44, cacheRead: 0, output: 1.32, total: 1.76 })
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], peakAt, 'cny'), { input: 2, cacheRead: 0, output: 8, total: 10 })
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], peakAt, 'usd'), { input: 0.3, cacheRead: 0, output: 1.2, total: 1.5 })
 })
 
 test('parsePricingFile validates entries and accepts dual-currency + legacy shapes', () => {
@@ -239,12 +244,14 @@ test('file source serves prefix matches and refresh after rewrite', async () =>
 })
 
 test('estimateCost / pricingFor keep v0.1 compat semantics', () => {
-  assert.deepEqual(PRICING['deepseek-v4-flash'], { peak: FLASH_PEAK, offPeak: FLASH_OFF_PEAK })
+  assert.deepEqual(PRICING['deepseek-flash'], { peak: FLASH_PEAK, offPeak: FLASH_OFF_PEAK })
+  assert.deepEqual(PRICING['deepseek-v4-flash'], PRICING['deepseek-flash'])
   // 时刻未知 → 按高峰价保守估算：1M 未命中输入 + 1M 输出（v4-pro 高峰 CNY = 9 + 27）
   assert.equal(estimateCost({ uncachedInputTokens: 1_000_000, outputTokens: 1_000_000, cacheReadTokens: 0, cacheWriteTokens: 0 }, 'deepseek-v4-pro').cny, 36)
+  assert.equal(pricingFor('deepseek-flash').estimated, false)
   assert.equal(pricingFor('deepseek-v4-flash').estimated, false)
   assert.equal(pricingFor('unknown-model').estimated, true)
-  assert.equal(BUILTIN_VERIFIED_AT, Date.parse('2026-08-26T00:00:00Z'))
+  assert.equal(BUILTIN_VERIFIED_AT, Date.parse('2026-09-10T00:00:00Z'))
 })
 
 function responseRecorder() {
@@ -261,7 +268,7 @@ function responseRecorder() {
 test('/pricing route exposes builtin + fallback + models snapshot', async () => {
   const routes = new Map()
   apply({
-    effect(setup) { setup() },
+    effect(setup) { disposers.push(setup()) },
     get() { return undefined },
     webServer: { register(route) { routes.set(route.path, route); return () => {} } },
     sessions: { get() { return undefined } },
@@ -274,11 +281,50 @@ test('/pricing route exposes builtin + fallback + models snapshot', async () =>
   const body = JSON.parse(recorder.body)
   assert.equal(body.ok, true)
   assert.equal(body.builtinVerifiedAt, BUILTIN_VERIFIED_AT)
-  assert.equal(body.fallback.pricing.offPeak.cny.output, 4.5)
-  assert.equal(body.fallback.pricing.offPeak.usd.output, 0.66)
-  assert.equal(body.fallback.pricing.peak.usd.output, 1.32)
+  assert.equal(body.fallback.pricing.offPeak.cny.output, 4)
+  assert.equal(body.fallback.pricing.offPeak.usd.output, 0.6)
+  assert.equal(body.fallback.pricing.peak.usd.output, 1.2)
   const models = body.models.map((m) => m.model)
+  assert.ok(models.includes('deepseek-flash'))
   assert.ok(models.includes('deepseek-v4-flash'))
   assert.ok(models.includes('deepseek-v4-pro'))
   assert.ok(models.includes('deepseek-v4-flash-vision-exp'))
 })
+
+test('/pricing route serves the user pricing.json override (file source survives startup)', async () => {
+  const dir = await mkdtemp(join(tmpdir(), 'duc-pricing-'))
+  const pricingFile = join(dir, 'pricing.json')
+  await writeFile(pricingFile, JSON.stringify({
+    models: {
+      'deepseek-flash': {
+        peak: { cny: { cacheMissInput: 19.99, cacheHitInput: 0.04, output: 8 }, usd: { cacheMissInput: 2.99, cacheHitInput: 0.006, output: 1.2 } },
+        offPeak: { cny: { cacheMissInput: 9.99, cacheHitInput: 0.02, output: 4 }, usd: { cacheMissInput: 1.49, cacheHitInput: 0.003, output: 0.6 } },
+      },
+    },
+  }))
+  const routes = new Map()
+  const disposers = []
+  try {
+    apply({
+      // cordis 语义：effect(setup) 立即执行 setup，把返回的 disposer 留到 fiber 销毁时才调用。
+      // 写成 () => source.dispose() 会在这里当场销毁文件源 → 覆盖文件永不生效（本测试即为此回归）。
+      effect(setup) { disposers.push(setup()) },
+      get() { return undefined },
+      webServer: { register(route) { routes.set(route.path, route); return () => {} } },
+      sessions: { get() { return undefined } },
+    }, { pricingFile })
+    await new Promise((resolve) => setTimeout(resolve, 50))
+
+    const recorder = responseRecorder()
+    await routes.get('/dsh-usage-chart/pricing').handler(
+      { method: 'GET', url: '/dsh-usage-chart/pricing', headers: { host: 'localhost:3000' } },
+      recorder,
+    )
+    const flash = JSON.parse(recorder.body).models.find((m) => m.model === 'deepseek-flash')
+    assert.equal(flash.source, 'file')
+    assert.equal(flash.pricing.offPeak.cny.cacheMissInput, 9.99)
+  } finally {
+    for (const dispose of disposers) if (typeof dispose === 'function') dispose()
+    await rm(dir, { recursive: true, force: true })
+  }
+})
diff --git a/tests/rounds.test.mjs b/tests/rounds.test.mjs
index 1aa05a9..3308751 100644
--- a/tests/rounds.test.mjs
+++ b/tests/rounds.test.mjs
@@ -1,16 +1,21 @@
 import assert from 'node:assert/strict'
-import test from 'node:test'
+import test, { after } from 'node:test'
 
 import { apply, foldRounds, foldTurnUsage, tierAt } from '../lib/index.js'
 
-/** 2026-08-17 内置刊例价（双币种 /1M）：flash 高峰/空闲。 */
+/** cordis 语义：effect(setup) 立即执行 setup，把返回的 disposer 留到 fiber 销毁时再调用。 */
+const disposers = []
+after(() => { for (const dispose of disposers) if (typeof dispose === 'function') dispose() })
+
+
+/** 2026-09-10 内置刊例价（双币种 /1M）：flash 高峰/空闲。 */
 const FLASH_PEAK = {
-  cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-  usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
+  cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+  usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
 }
 const FLASH_OFF_PEAK = {
-  cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-  usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
+  cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+  usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
 }
 
 /** 合成事件流工具：seq 自动递增，time 由调用方给定。 */
@@ -68,12 +73,12 @@ test('foldRounds computes per-round timing, TTFT, TPS, model attribution and cos
   assert.equal(r1.cost.estimated, false)
   // 轮 1 开始于 1970-01-01T00:00:01Z = 北京时间 08:00（空闲时段）→ 空闲价
   assert.equal(tierAt(r1.startedAt), 'offPeak')
-  assert.equal(r1.cost.cny.input, (100 / 1_000_000) * 1.5)
-  assert.equal(r1.cost.cny.cacheRead, (30 / 1_000_000) * 0.05)
-  assert.equal(r1.cost.cny.output, (20 / 1_000_000) * 4.5)
-  assert.equal(r1.cost.usd.input, (100 / 1_000_000) * 0.22)
-  assert.equal(r1.cost.usd.cacheRead, (30 / 1_000_000) * 0.007)
-  assert.equal(r1.cost.usd.output, (20 / 1_000_000) * 0.66)
+  assert.equal(r1.cost.cny.input, (100 / 1_000_000) * 1)
+  assert.equal(r1.cost.cny.cacheRead, (30 / 1_000_000) * 0.02)
+  assert.equal(r1.cost.cny.output, (20 / 1_000_000) * 4)
+  assert.equal(r1.cost.usd.input, (100 / 1_000_000) * 0.15)
+  assert.equal(r1.cost.usd.cacheRead, (30 / 1_000_000) * 0.003)
+  assert.equal(r1.cost.usd.output, (20 / 1_000_000) * 0.6)
 
   const r2 = rounds.find((r) => r.turn === 2)
   assert.ok(r2, 'round 2 present')
@@ -101,11 +106,11 @@ test('foldRounds bills peak vs off-peak rounds by their start time', () => {
   const offPeak = rounds.find((r) => r.turn === 2)
   assert.equal(tierAt(peak.startedAt), 'peak')
   assert.equal(tierAt(offPeak.startedAt), 'offPeak')
-  // 1M 未命中输入：高峰 = 空闲 × 2（CNY 3.0/1.5；USD 0.44/0.22）
-  assert.equal(peak.cost.cny.total, 3.0)
-  assert.equal(peak.cost.usd.total, 0.44)
-  assert.equal(offPeak.cost.cny.total, 1.5)
-  assert.equal(offPeak.cost.usd.total, 0.22)
+  // 1M 未命中输入：高峰 = 空闲 × 2（CNY 2/1；USD 0.3/0.15）
+  assert.equal(peak.cost.cny.total, 2)
+  assert.equal(peak.cost.usd.total, 0.3)
+  assert.equal(offPeak.cost.cny.total, 1)
+  assert.equal(offPeak.cost.usd.total, 0.15)
 })
 
 test('foldRounds tolerates missing turn/end (open round) and missing model', () => {
@@ -150,9 +155,9 @@ test('foldRounds marks unknown models and uses fallback pricing', () => {
   assert.equal(rounds[0].cost.unknownModel, true)
   assert.equal(rounds[0].cost.estimated, true)
   assert.equal(rounds[0].cost.source, 'fallback')
-  // 轮开始于北京时间 08:00（空闲）→ 1M token × flash 空闲未命中价（CNY 1.5 / USD 0.22）
-  assert.equal(rounds[0].cost.cny.total, 1.5)
-  assert.equal(rounds[0].cost.usd.total, 0.22)
+  // 轮开始于北京时间 08:00（空闲）→ 1M token × flash 空闲未命中价（CNY 1 / USD 0.15）
+  assert.equal(rounds[0].cost.cny.total, 1)
+  assert.equal(rounds[0].cost.usd.total, 0.15)
 })
 
 test('foldTurnUsage stays compatible with the v0.1 semantics', () => {
@@ -206,7 +211,7 @@ test('/usage route returns rounds with cost and timing', async () => {
   ]
   const routes = new Map()
   apply({
-    effect(setup) { setup() },
+    effect(setup) { disposers.push(setup()) },
     get() { return undefined },
     webServer: { register(route) { routes.set(route.path, route); return () => {} } },
     sessions: { get(id) { return id === 'session-test' ? { id, events } : undefined } },
@@ -247,7 +252,7 @@ test('/usage route prefers snapshotEvents() when the new API is present', async
   ]
   const routes = new Map()
   apply({
-    effect(setup) { setup() },
+    effect(setup) { disposers.push(setup()) },
     get() { return undefined },
     webServer: { register(route) { routes.set(route.path, route); return () => {} } },
     // 有 snapshotEvents、无 events —— 必须走 snapshotEvents() 分支，且绝不触碰 events 属性。
@@ -273,7 +278,7 @@ test('/usage route prefers snapshotEvents() when the new API is present', async
   const both = { id: 'session-test', events: [], snapshotEvents: () => events }
   const bothRoutes = new Map()
   apply({
-    effect(setup) { setup() },
+    effect(setup) { disposers.push(setup()) },
     get() { return undefined },
     webServer: { register(route) { bothRoutes.set(route.path, route); return () => {} } },
     sessions: { get(id) { return id === 'session-test' ? both : undefined } },