feat: 新增备课模块并修复全模块 P0/P1/P2 缺陷

主要变更:

- 新增 lesson-preparation 模块: 备课编辑器、节点编辑、AI 建议、知识点选择、版本历史、作业发布

- 新增 shared 通用组件: charts/question-bank-filters/schedule-list/ui (chip-nav/filter-bar/page-header/stat-card/stat-item)

- 新增 student/admin 端 loading.tsx 与 error.tsx, 优化加载与错误态体验

- 新增 teacher/lesson-plans 页面 (列表/新建/编辑)

- 新增 drizzle 迁移 0002_tiny_lionheart 及 snapshot

- 新增 textbooks/schema.ts 与 exams/utils/normalize-structure.ts

- 修复 Tiptap v3 SSR hydration 崩溃 (rich-text-block immediatelyRender: false)

- 重构多模块 data-access/actions/组件, 修复权限校验与类型规范

- 同步架构文档 004/005 反映新增模块、导出、依赖关系

- 归档 bugs/* 测试报告与 e2e 测试脚本 (admin/parent/student/teacher web_test)

src/modules/settings/components/password-change-form.tsx

@@ -1,6 +1,6 @@
 "use client"
 
-import { useActionState, useEffect, useMemo, useState } from "react"
+import { useActionState, useEffect, useMemo, useRef, useState } from "react"
 import { useFormStatus } from "react-dom"
 import { Eye, EyeOff, KeyRound, Loader2 } from "lucide-react"
 import { toast } from "sonner"
@@ -18,10 +18,10 @@ import {
 } from "@/shared/lib/password-policy"
 import type { ActionState } from "@/shared/types/action-state"
 
-const STRENGTH_META: Record<PasswordStrength, { value: number; label: string; color: string }> = {
-  weak: { value: 33, label: "Weak", color: "bg-red-500" },
-  medium: { value: 66, label: "Medium", color: "bg-yellow-500" },
-  strong: { value: 100, label: "Strong", color: "bg-green-500" },
+const STRENGTH_META: Record<PasswordStrength, { value: number; label: string; barClass: string }> = {
+  weak: { value: 33, label: "Weak", barClass: "h-2 [&>div]:bg-red-500" },
+  medium: { value: 66, label: "Medium", barClass: "h-2 [&>div]:bg-yellow-500" },
+  strong: { value: 100, label: "Strong", barClass: "h-2 [&>div]:bg-green-500" },
 }
 
 function SubmitButton() {
@@ -52,6 +52,7 @@ export function PasswordChangeForm() {
   const [showCurrent, setShowCurrent] = useState(false)
   const [showNew, setShowNew] = useState(false)
   const [showConfirm, setShowConfirm] = useState(false)
+  const formRef = useRef<HTMLFormElement>(null)
 
   const strength = useMemo(() => getPasswordStrength(newPassword), [newPassword])
   const meta = STRENGTH_META[strength]
@@ -59,8 +60,7 @@ export function PasswordChangeForm() {
   useEffect(() => {
     if (state?.success) {
       toast.success(state.message ?? "Password changed successfully")
-      const form = document.getElementById("password-change-form") as HTMLFormElement | null
-      form?.reset()
+      formRef.current?.reset()
     } else if (state?.message) {
       toast.error(state.message)
     }
@@ -74,7 +74,7 @@ export function PasswordChangeForm() {
           Choose a strong password to keep your account secure.
         </CardDescription>
       </CardHeader>
-      <form id="password-change-form" action={formAction} onReset={() => setNewPassword("")}>
+      <form ref={formRef} id="password-change-form" action={formAction} onReset={() => setNewPassword("")}>
         <CardContent className="space-y-4">
           <div className="space-y-2">
             <Label htmlFor="currentPassword">Current Password</Label>
@@ -130,7 +130,7 @@ export function PasswordChangeForm() {
                   <span className="text-muted-foreground">Password strength</span>
                   <span className="font-medium">{meta.label}</span>
                 </div>
-                <Progress value={meta.value} className={`h-2 [&>div]:${meta.color}`} />
+                <Progress value={meta.value} className={meta.barClass} />
               </div>
             )}
           </div>