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/sideM.vue

@@ -0,0 +1,84 @@
+<template>
+	<div class="mobile-nav-button" @click="showMobileNav">
+		<el-icon><el-icon-menu /></el-icon>
+	</div>
+
+	<el-drawer
+		:size="240"
+		v-model="nav"
+		direction="ltr"
+		:with-header="false"
+		destroy-on-close
+	>
+		<el-container class="mobile-nav">
+			<el-header>
+				<logo/>
+			</el-header>
+			<el-main>
+				<el-scrollbar>
+					<el-menu
+						:default-active="$route.fullPath"
+						@select="select"
+						router
+						background-color="#212d3d"
+						text-color="#fff"
+						active-text-color="#409EFF"
+					>
+						<navMenu :navMenus="vueAdmin.menuTree"></navMenu>
+					</el-menu>
+				</el-scrollbar>
+			</el-main>
+		</el-container>
+	</el-drawer>
+</template>
+
+<script lang="ts" setup>
+import { defineAsyncComponent, ref } from "vue";
+import { vueAdmin, resolveVue } from '../VueAdmin';
+
+const navMenu = defineAsyncComponent(resolveVue('components/navMenu.vue'));
+const Logo = defineAsyncComponent(resolveVue('components/logo.vue'));
+
+let nav = ref(false);
+function showMobileNav() { nav.value = true; }
+function select() {}
+</script>
+
+<style scoped>
+.mobile-nav-button {
+	position: fixed;
+	bottom: 10px;
+	left: 10px;
+	z-index: 10;
+	width: 50px;
+	height: 50px;
+	background: #409eff;
+	box-shadow: 0 2px 12px 0 rgba(64, 158, 255, 1);
+	border-radius: 50%;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+}
+.mobile-nav-button i {
+	color: #fff;
+	font-size: 20px;
+}
+
+.mobile-nav {
+	background: #212d3d;
+}
+.mobile-nav .el-header {
+	background: transparent;
+	border: 0;
+}
+.mobile-nav .el-main {
+	padding: 0;
+}
+.mobile-nav .logo-bar {
+	display: flex;
+	align-items: center;
+	font-weight: bold;
+	font-size: 20px;
+	color: #fff;
+}
+</style>