feat: 小程序统一走 Go 后台，咨询与登录切到 /api/v1

去掉协会 WebView 和魔方账密页，微信登录与咨询接口共用同一 token 和拦截器。

Co-authored-by: Cursor <cursoragent@cursor.com>

pages/yxg/explore-category.vue

@@ -0,0 +1,77 @@
+<template>
+	<yxg-page :title="cat?.title || '分类'">
+		<view class="head">
+			<yxg-tool-icon :name="heroIcon" :size="40" />
+			<view>
+				<text class="title">{{ cat?.title || '分类' }}</text>
+				<text v-if="cat" class="sub">{{ cat.description }}</text>
+			</view>
+		</view>
+		<text v-if="loading" class="hint">加载中…</text>
+		<text v-else-if="error" class="err">{{ error }}</text>
+		<view v-else-if="cat" class="list">
+			<view v-for="it in cat.items" :key="it.key" class="row" @click="yxgGo(it.path)">
+				<yxg-tool-icon :name="toolIconFor(it.path || it.key)" :size="36" />
+				<view class="row-body">
+					<text class="row-t">{{ it.title }}</text>
+					<text class="row-d">{{ it.description }}</text>
+				</view>
+				<text class="chev">›</text>
+			</view>
+		</view>
+	</yxg-page>
+</template>
+
+<script setup>
+import YxgPage from '@/components/yxg/yxg-page.vue'
+import YxgToolIcon from '@/components/yxg/yxg-tool-icon.vue'
+import { yxgApi } from '@/util/yxgApi.js'
+import { ensureAccount } from '@/util/yxgAuth.js'
+import { toolIconFor } from '@/util/yxgCatalog.js'
+import { yxgGo } from '@/util/yxgNav.js'
+
+const category = ref('')
+const cat = ref(null)
+const loading = ref(true)
+const error = ref('')
+const heroIcon = computed(() => toolIconFor(cat.value?.key || category.value || 'explore'))
+
+async function load() {
+	loading.value = true
+	error.value = ''
+	if (!(await ensureAccount(`/explore/${category.value}`))) {
+		loading.value = false
+		return
+	}
+	try {
+		cat.value = await yxgApi.getExploreCategory(category.value)
+	} catch (e) {
+		error.value = e instanceof Error ? e.message : '加载失败'
+	} finally {
+		loading.value = false
+	}
+}
+
+onLoad((q) => {
+	category.value = q.category || ''
+	load()
+})
+</script>
+
+<style>
+page { background-color: #ffd1c7; }
+</style>
+<style scoped>
+.head { display: flex; align-items: center; gap: 12px; padding: 8px 16px; }
+.title { display: block; font-size: 20px; font-weight: 700; color: #333; }
+.sub { display: block; font-size: 12px; color: #999; margin-top: 2px; }
+.list { margin: 8px 16px; background: #fff; border-radius: 16px; }
+.row { display: flex; align-items: center; gap: 12px; padding: 14px; border-bottom: 1px solid #f5f5f5; }
+.row:last-child { border-bottom: none; }
+.row-body { flex: 1; min-width: 0; }
+.row-t { display: block; font-size: 15px; font-weight: 650; color: #222; }
+.row-d { display: block; font-size: 12px; color: #999; margin-top: 2px; }
+.chev { color: #ccc; }
+.hint, .err { display: block; padding: 16px; font-size: 13px; color: #999; }
+.err { color: #e54d42; }
+</style>