diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5db873..609c364 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,18 @@
 
 本文件的格式基于 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.0.0/)，
 并且本项目遵循 [语义化版本 (Semantic Versioning)](https://semver.org/lang/zh-CN/spec/v2.0.0.html)。
+ 
+## [1.2.2] - 2026-01-14
+
+### 变更
+- **Linting**: 强化了 Biome 配置，启用了更严格的 `a11y` (可访问性), `suspicious` (可疑代码), `style` (代码规范) 和 `correctness` (正确性) 检查规则。
+- **配置**: 配置 `noUnknownAtRules` 规则以忽略 Tailwind CSS 特有的 At-rules。
+
+### 修复
+- **Web 可访问性**: 为所有按钮添加了显式的 `type="button"` 以符合规范。
+- **语义化/ARAI**: 修正了 `Modal` 背景的交互逻辑，将非语义化的 `div` 替换为 `<button>` 并添加了必要的键盘事件与 ARIA 属性。
+- **Hook 依赖**: 在多个视图中使用了 `useCallback` 来确保 `useEffect` 依赖链的稳定性，解决了 `exhaustive-deps` 警告。
+- **代码健壮性**: 修复了 `main.tsx` 中的 Non-null Assertion 并解决了 `TopicsView` 中的类型重声明冲突。
 
 ## [1.2.1] - 2026-01-14
 
diff --git a/docs/copilot-context.md b/docs/copilot-context.md
index 26320aa..25b0882 100644
--- a/docs/copilot-context.md
+++ b/docs/copilot-context.md
@@ -1,4 +1,4 @@
-# Project Context for GitHub Copilot (v1.2.1)
+# Project Context for GitHub Copilot (v1.2.2)
 
 This document provides technical context, architectural decisions, and code conventions for the **Alert Message Center** project. It is intended to help AI assistants understand the codebase.
 
@@ -194,6 +194,11 @@ The database schema is defined in `apps/server/src/db/schema.ts`.
 - **Styling**: Use Tailwind utility classes directly in JSX.
 - **Async/Await**: Prefer `async/await` over `.then()`.
 - **Type Safety**: strict TypeScript usage. Backend and Frontend share types via Hono RPC or shared interfaces.
+- **Linter & Formatter**:
+  - Framework: [Biome](https://biomejs.dev/).
+  - **Rules**: Strict configuration for `a11y`, `suspicious`, `style`, and `correctness`.
+  - **Tailwind**: `noUnknownAtRules` is configured to ignore Tailwind directives (`@tailwind`, `@apply`, etc.).
+  - **Enforcement**: CI/CD runs `biome check` to ensure compliance. Avoid use of `as any` unless absolutely necessary (e.g., complex API payloads), in which case `// biome-ignore` should include a rationale.
 - **Logging**:
   - Framework: `pino`.
   - **Structured Log**: Use JSON format for easy parsing and aggregation.
diff --git a/todo.md b/todo.md
index b0ef349..7d251e1 100644
--- a/todo.md
+++ b/todo.md
@@ -26,4 +26,5 @@
 - [x] **Auto-Cleanup**: Unbind subscriptions when bot is removed from group.
 - [x] **Long Connection**: WebSocket support for intranet deployments.
 - [x] **Structured Logging**: Integrated `pino` for better observability.
+- [x] **Linting**: Tightened Biome rules and resolved all a11y/correctness issues.