v0.3.0: 单 sources 入口 + 路径后缀覆盖约定

破坏性重构。框架对外只暴露一个 `sources` glob 入口,消费侧任何 .vue
都按文件路径后缀匹配同后缀覆盖:

- shrimp/components/<name>.vue 同后缀覆盖框架内置(login/layout/topbar/ShrimpTable/...)
- shrimp/components/fields/Field<X>.vue 注册类型 <x>(首字母小写)
- shrimp/module/<key>.vue 业务模块

变更:
- 删除 customFields / moduleSources / overrideField / registerField 旧入口
- 删除 fieldOverrides Map,字段表纯靠 glob 扫描注册
- 框架内 .vue 对可覆盖 peer 改用 defineAsyncComponent(resolveVue(...))
  (login → ShrimpLangSwitch / layout → sideM/navMenu/topbar/userbar/logo /
   ShrimpTable → ShrimpEditDrawer/ShrimpFilterDrawer/...)
- views/ 全部并入 components/,App.vue 上提到 src/ 根
- LangSwitch → ShrimpLangSwitch,PowerTree → ShrimpPowerTree
- module/FieldRelativeTime.vue → components/fields/FieldRelativeTime.vue
- module/user.vue 改用 #column-updatedAt slot 替代旧的 overrideField

字段类型约定从 'field' + Name 改为 lowercase-first(FieldString → 'string'),
内置和消费侧统一。

src/components/userbar.vue

@@ -0,0 +1,92 @@
+<template>
+	<div class="user-bar">
+		<LangSwitch class="panel-item" />
+		<div class="panel-item" @click="screen">
+			<el-icon><el-icon-full-screen /></el-icon>
+		</div>
+		<el-dropdown class="user" trigger="click" @command="handleUser">
+			<div class="user-avatar dropdown-panel-item">
+				<label>{{ vueAdmin.userName || 'Admin' }}</label>
+				<el-icon class="el-icon--right"><el-icon-arrow-down /></el-icon>
+			</div>
+			<template #dropdown>
+				<el-dropdown-menu>
+					<el-dropdown-item command="clearCache">{{ $t("base.clearCache") }}</el-dropdown-item>
+					<el-dropdown-item divided command="outLogin">{{ $t("base.logout") }}</el-dropdown-item>
+				</el-dropdown-menu>
+			</template>
+		</el-dropdown>
+	</div>
+</template>
+
+<script lang="ts" setup>
+import { vueAdmin, resolveVue } from "../VueAdmin";
+import { defineAsyncComponent } from "vue";
+
+const LangSwitch = defineAsyncComponent(resolveVue('components/ShrimpLangSwitch.vue'));
+
+function screen() {
+	vueAdmin.fullscreen();
+}
+function handleUser(command: string) {
+	switch (command) {
+		case "clearCache":
+			vueAdmin.clearCache();
+			vueAdmin.reset();
+			break;
+		case "outLogin":
+			vueAdmin.reset();
+			break;
+	}
+}
+</script>
+
+<style scoped>
+.user-bar {
+	display: flex;
+	align-items: center;
+	height: 100%;
+}
+
+.user-bar .panel-item {
+	padding: 0 10px;
+	cursor: pointer;
+	height: 100%;
+	display: flex;
+	align-items: center;
+}
+
+.user-bar .panel-item i {
+	font-size: 16px;
+}
+
+.user-bar .panel-item:hover {
+	background: rgba(0, 0, 0, 0.1);
+}
+
+.dropdown-panel-item {
+	padding: 0 10px;
+	cursor: pointer;
+	height: 100%;
+	display: flex;
+	align-items: center;
+}
+
+.dropdown-panel-item:hover {
+	background: rgba(0, 0, 0, 0.1);
+}
+
+.user-bar .user-avatar {
+	height: 49px;
+	display: flex;
+	align-items: center;
+}
+
+.user-bar .user-avatar label {
+	display: inline-block;
+	margin-left: 5px;
+	font-size: 12px;
+	cursor: pointer;
+}
+</style>
+