diff --git a/src/app/(dashboard)/parent/children/[studentId]/page.tsx b/src/app/(dashboard)/parent/children/[studentId]/page.tsx
index ce25626..48d4977 100644
--- a/src/app/(dashboard)/parent/children/[studentId]/page.tsx
+++ b/src/app/(dashboard)/parent/children/[studentId]/page.tsx
@@ -3,10 +3,10 @@ import { notFound } from "next/navigation"
 import { requireAuth } from "@/shared/lib/auth-guard"
 import { getSearchParam } from "@/shared/lib/utils"
 import {
-  verifyParentChildRelation,
-  getChildDashboardData,
-  getChildNameList,
-} from "@/modules/parent/data-access"
+  verifyParentChildRelationAction,
+  getChildDashboardDataAction,
+  getChildNameListAction,
+} from "@/modules/parent/actions"
 import { ChildDetailHeader } from "@/modules/parent/components/child-detail-header"
 import {
   ChildDetailPanel,
@@ -31,7 +31,8 @@ export default async function ChildDetailPage({
   const t = await getTranslations("common")
 
   // 校验当前家长与该子女存在关系（同时按 parentId + studentId 过滤，防止跨家庭信息泄露）
-  const relation = await verifyParentChildRelation(studentId, ctx.userId)
+  // 审计 v1 P0 修复（G4-002）：改调 Server Action，统一权限校验入口
+  const relation = await verifyParentChildRelationAction(studentId)
 
   // dataScope 二次校验：admin/其他角色可能通过 requireAuth，但需确认 dataScope 包含该子女
   const isInScope =
@@ -52,8 +53,8 @@ export default async function ChildDetailPage({
   }
 
   const [child, siblings] = await Promise.all([
-    getChildDashboardData(studentId, relation),
-    getChildNameList(ctx.userId),
+    getChildDashboardDataAction(studentId),
+    getChildNameListAction(),
   ])
   if (!child) {
     notFound()
diff --git a/src/app/(dashboard)/parent/elective/page.tsx b/src/app/(dashboard)/parent/elective/page.tsx
index 09bd0b3..70cb4b5 100644
--- a/src/app/(dashboard)/parent/elective/page.tsx
+++ b/src/app/(dashboard)/parent/elective/page.tsx
@@ -4,9 +4,9 @@ import { getTranslations } from "next-intl/server"
 import { requirePermission } from "@/shared/lib/auth-guard"
 import { Permissions } from "@/shared/types/permissions"
 import {
-  getChildren,
-  getChildBasicInfo,
-} from "@/modules/parent/data-access"
+  getChildrenAction,
+  getChildBasicInfoAction,
+} from "@/modules/parent/actions"
 import { getStudentSelections } from "@/modules/elective/data-access-selections"
 import {
   ParentChildrenDataPage,
@@ -25,7 +25,6 @@ interface ChildSelectionData {
 export default async function ParentElectivePage() {
   const t = await getTranslations("elective")
   const ctx = await requirePermission(Permissions.ELECTIVE_READ)
-  const parentId = ctx.userId
 
   // dataScope 校验：家长必须有关联子女才能查看选课信息
   if (ctx.dataScope.type !== "children" || ctx.dataScope.childrenIds.length === 0) {
@@ -41,11 +40,12 @@ export default async function ParentElectivePage() {
   }
 
   // 并行拉取每个子女的选课记录，使用 allSettled 容错
-  const relations = await getChildren(parentId)
+  // 审计 v1 P0 修复（G4-002）：改调 Server Action，统一权限校验入口
+  const relations = await getChildrenAction()
   const results = await Promise.allSettled(
     relations.map(async (r): Promise<ChildSelectionData> => {
       // 双重校验：parentId + studentId 必须存在关联关系，防止跨家庭信息泄露
-      const basicInfo = await getChildBasicInfo(r.studentId, r.relation)
+      const basicInfo = await getChildBasicInfoAction(r.studentId, r.relation)
       const selections = await getStudentSelections(r.studentId)
       return {
         studentId: r.studentId,
diff --git a/src/app/(dashboard)/parent/leave/page.tsx b/src/app/(dashboard)/parent/leave/page.tsx
index e36357c..7f345d4 100644
--- a/src/app/(dashboard)/parent/leave/page.tsx
+++ b/src/app/(dashboard)/parent/leave/page.tsx
@@ -5,7 +5,7 @@ import { ArrowLeft, CalendarDays } from "lucide-react"
 import { getAuthContext } from "@/shared/lib/auth-guard"
 import { Button } from "@/shared/components/ui/button"
 import { Card, CardContent, CardHeader, CardTitle } from "@/shared/components/ui/card"
-import { getChildren, getChildBasicInfo } from "@/modules/parent/data-access"
+import { getChildrenAction, getChildBasicInfoAction } from "@/modules/parent/actions"
 import { getLeaveRequests } from "@/modules/leave-requests/data-access"
 import {
   LeaveRequestForm,
@@ -46,8 +46,9 @@ export default async function ParentLeavePage() {
   }
 
   // 并行：子女关系列表 + 已有请假申请列表
+  // 审计 v1 P0 修复（G4-002）：改调 Server Action，统一权限校验入口
   const [relations, leaveResult] = await Promise.all([
-    getChildren(ctx.userId),
+    getChildrenAction(),
     getLeaveRequests({
       scope: ctx.dataScope,
       currentUserId: ctx.userId,
@@ -59,7 +60,7 @@ export default async function ParentLeavePage() {
   // 构造子女选项（含 activeClass），供表单下拉使用
   const childOptions: ChildOption[] = []
   for (const r of relations) {
-    const basic = await getChildBasicInfo(r.studentId, r.relation)
+    const basic = await getChildBasicInfoAction(r.studentId, r.relation)
     if (basic && basic.classId && basic.className) {
       childOptions.push({
         id: basic.id,
diff --git a/src/app/(dashboard)/student/error-book/student-error-book-list-client.tsx b/src/app/(dashboard)/student/error-book/student-error-book-list-client.tsx
index 559d46b..e8695bd 100644
--- a/src/app/(dashboard)/student/error-book/student-error-book-list-client.tsx
+++ b/src/app/(dashboard)/student/error-book/student-error-book-list-client.tsx
@@ -3,7 +3,7 @@
 import { useTransition } from "react"
 import type { JSX } from "react"
 import { useRouter } from "next/navigation"
-import { toast } from "sonner"
+import { notify } from "@/shared/lib/notify"
 import { useTranslations } from "next-intl"
 
 import { ErrorBookList } from "@/modules/error-book/components/error-book-list"
@@ -102,10 +102,10 @@ export function StudentErrorBookListClient({
       )
       const res = await createPracticeSessionAction(undefined, formData)
       if (res.success && res.data) {
-        toast.success(res.message ?? tPractice("starter.title"))
+        notify.success(res.message ?? tPractice("starter.title"))
         router.push(`/student/practice/${res.data.sessionId}`)
       } else {
-        toast.error(res.message ?? t("messages.saveFailed"))
+        notify.error(res.message ?? t("messages.saveFailed"))
       }
     })
   }
diff --git a/src/app/(dashboard)/teacher/classes/schedule/schedule-filters.tsx b/src/app/(dashboard)/teacher/classes/schedule/schedule-filters.tsx
index 82d8e2d..2078926 100644
--- a/src/app/(dashboard)/teacher/classes/schedule/schedule-filters.tsx
+++ b/src/app/(dashboard)/teacher/classes/schedule/schedule-filters.tsx
@@ -5,7 +5,7 @@ import { useRouter } from "next/navigation"
 import { useTranslations } from "next-intl"
 import { useQueryState, parseAsString } from "nuqs"
 import { Plus } from "lucide-react"
-import { toast } from "sonner"
+import { notify } from "@/shared/lib/notify"
 
 import { Button } from "@/shared/components/ui/button"
 import {
@@ -57,14 +57,14 @@ export function ScheduleFilters({ classes }: { classes: TeacherClass[] }) {
       formData.set("classId", createClassId)
       const res = await createClassScheduleItemAction(null, formData)
       if (res.success) {
-        toast.success(res.message)
+        notify.success(res.message)
         setOpen(false)
         router.refresh()
       } else {
-        toast.error(res.message || t("list.failedCreate"))
+        notify.error(res.message || t("list.failedCreate"))
       }
     } catch {
-      toast.error(t("list.failedCreate"))
+      notify.error(t("list.failedCreate"))
     } finally {
       setIsWorking(false)
     }
diff --git a/src/app/(dashboard)/teacher/classes/students/students-filters.tsx b/src/app/(dashboard)/teacher/classes/students/students-filters.tsx
index 2042797..9870696 100644
--- a/src/app/(dashboard)/teacher/classes/students/students-filters.tsx
+++ b/src/app/(dashboard)/teacher/classes/students/students-filters.tsx
@@ -5,7 +5,7 @@ import { useRouter } from "next/navigation"
 import { useTranslations } from "next-intl"
 import { useQueryState, parseAsString } from "nuqs"
 import { UserPlus, ChevronDown, Check } from "lucide-react"
-import { toast } from "sonner"
+import { notify } from "@/shared/lib/notify"
 
 import { Input } from "@/shared/components/ui/input"
 import { Button } from "@/shared/components/ui/button"
@@ -65,14 +65,14 @@ export function StudentsFilters({ classes, defaultClassId }: { classes: TeacherC
     try {
       const res = await enrollStudentByEmailAction(enrollClassId, null, formData)
       if (res.success) {
-        toast.success(res.message)
+        notify.success(res.message)
         setOpen(false)
         router.refresh()
       } else {
-        toast.error(res.message || t("list.failedCreate"))
+        notify.error(res.message || t("list.failedCreate"))
       }
     } catch {
-      toast.error(t("list.failedCreate"))
+      notify.error(t("list.failedCreate"))
     } finally {
       setIsWorking(false)
     }
diff --git a/src/app/globals.css b/src/app/globals.css
index 6e8f650..2392fc2 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -4,6 +4,11 @@
 @plugin "@tailwindcss/typography";
 @custom-variant dark (&:where(.dark, .dark *));
 
+/* 排除非源码目录，防止文档中的 Tailwind 任意值语法字符串被误识别为类名 */
+@source not "../../docs";
+@source not "../../scripts";
+@source not "../../tests";
+
 /* Reduced Motion */
 @layer base {
   @media (prefers-reduced-motion: reduce) {