init: 毛孩子计划 小程序 + Go 后端 + 内嵌后台

- pets-fe: 微信原生小程序（首页/计划/记录/报告/社区/引导），
  服务端驱动、无假数据；弹层改用 scroll-view，打开时隐藏自定义 tabBar
- pets-be: Gin + GORM(MySQL, sundynix_ 前缀) + MinIO，统一响应/分页，
  微信 code2session 登录，provider-neutral AI(DeepSeek)，go:embed React 后台
- 修复：分段选择类型不匹配（字符串 vs 数字）导致选不中

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

pets-fe/utils/store.js

@@ -0,0 +1,100 @@
+// 全局状态：登录、宠物列表、当前宠物；服务端驱动 + 发布订阅
+const api = require('./api.js');
+
+const state = {
+  user: null,
+  pets: [],
+  currentId: 0,
+};
+
+const listeners = new Set();
+let bootstrapPromise = null;
+
+function getPets() {
+  return state.pets;
+}
+function getPet() {
+  return state.pets.find((p) => p.id === state.currentId) || state.pets[0] || {};
+}
+function currentPetId() {
+  const p = getPet();
+  return p && p.id;
+}
+
+function notify() {
+  const pet = getPet();
+  listeners.forEach((fn) => {
+    try {
+      fn(pet);
+    } catch (e) {
+      /* noop */
+    }
+  });
+}
+
+function subscribe(fn) {
+  listeners.add(fn);
+  return () => listeners.delete(fn);
+}
+
+// 登录 + 拉宠物列表（只跑一次）
+function ready() {
+  if (!bootstrapPromise) {
+    bootstrapPromise = (async () => {
+      const res = await api.login();
+      state.user = res.user;
+      await loadPets();
+    })().catch((e) => {
+      bootstrapPromise = null; // 允许重试
+      throw e;
+    });
+  }
+  return bootstrapPromise;
+}
+
+async function loadPets() {
+  const pets = await api.getPets();
+  state.pets = pets || [];
+  if (!state.currentId && state.pets[0]) {
+    state.currentId = state.pets[0].id;
+  }
+  // 当前宠物被删或不存在时回退第一只
+  if (!state.pets.find((p) => p.id === state.currentId) && state.pets[0]) {
+    state.currentId = state.pets[0].id;
+  }
+  notify();
+  return state.pets;
+}
+
+function switchPet(id) {
+  if (state.currentId === id) return;
+  state.currentId = id;
+  notify();
+}
+
+// 本地更新当前宠物字段（服务端已改动后同步 UI）
+function patchCurrent(patch) {
+  const pet = getPet();
+  Object.assign(pet, patch);
+  notify();
+}
+
+function setUser(u) {
+  state.user = u;
+}
+function getUser() {
+  return state.user;
+}
+
+module.exports = {
+  ready,
+  loadPets,
+  getPets,
+  getPet,
+  currentPetId,
+  switchPet,
+  patchCurrent,
+  subscribe,
+  setUser,
+  getUser,
+};