feat: openid-login + avatar_url 修复

- 后端: 新增 /auth/openid-login 接口（调 CRMEB 补齐用户信息）
- 后端: config.py 新增 crmeb_base_url / crmeb_api_key 配置
- 后端: api.ts 新增 openid-login 接口声明
- 前端: LoginPage 改为走 openid-login（openid 单参登录）
- 前端: UserContext 修复 avatar_url 未映射导致头像不显示的问题

frontend/src/app/pages/LoginPage.tsx

@@ -3,7 +3,7 @@ import { useNavigate } from "react-router";
 import { motion } from "motion/react";
 import { Heart } from "lucide-react";
 import { useUser } from "../context/UserContext";
-import { devLogin, createDummyToken, updateUserProfile } from "../services/api";
+import { devLogin, fetchApi } from "../services/api";
 import { debugLog, clearDebugLogs } from "../services/debug";
 
 export function LoginPage() {
@@ -20,39 +20,23 @@ export function LoginPage() {
 
     const openidParam = params.get('openid');
     if (openidParam && openidParam.trim()) {
-      const uid = parseInt(params.get('uid') || '0');
-      const phone = params.get('phone') || '';
-      const token = createDummyToken(uid, openidParam, phone);
-      debugLog(`dummy token: ${token.substring(0, 50)}...`);
-
-      try {
-        const payload = JSON.parse(atob(token.split('.')[1]));
-        debugLog(`payload: uid=${payload.uid}, openid=${payload.openid}, phone=${payload.phone}`);
-      } catch (e: any) {
-        debugLog(`decode error: ${e.message}`);
-      }
-
-      setTokenAndUser(token, { id: String(uid), openid: openidParam, phone });
-      debugLog(`setTokenAndUser: id=${uid}, openid=${openidParam}, phone=${phone}`);
-
-      // 同步昵称和头像到后端
-      const nameParam = params.get('name');
-      const avatarParam = params.get('avatar');
-      if (nameParam || avatarParam) {
-        const updateData: Record<string, unknown> = {};
-        if (nameParam) updateData.name = decodeURIComponent(nameParam);
-        if (avatarParam) updateData.avatar_url = decodeURIComponent(avatarParam);
-        updateUserProfile(updateData).then(() => {
-          debugLog(`synced: name=${nameParam}, avatar=${(avatarParam || '').substring(0, 30)}...`);
-        }).catch((e) => debugLog(`sync error: ${e.message}`));
-      }
-
-      fetchProfile().then((dto) => {
-        if (dto) debugLog(`fetchProfile: name=${dto.name}, phone=${dto.phone}, onboarded=${dto.is_onboarded}`);
-        navigate(dto?.is_onboarded ? "/home" : "/onboarding", { replace: true });
+      debugLog(`openid: ${openidParam}`);
+      fetchApi("/auth/openid-login", {
+        method: "POST",
+        body: JSON.stringify({ openid: openidParam }),
+      }).then((res: any) => {
+        debugLog(`openid-login OK: id=${res.user_id}, phone=${res.mobile}`);
+        setTokenAndUser(res.token, { id: res.user_id, openid: res.openid, phone: res.mobile });
+        fetchProfile().then((dto) => {
+          if (dto) debugLog(`fetchProfile: name=${dto.name}, phone=${dto.phone}, onboarded=${dto.is_onboarded}`);
+          navigate(dto?.is_onboarded ? "/home" : "/onboarding", { replace: true });
+        }).catch((e: any) => {
+          debugLog(`fetchProfile error: ${e?.message}`);
+          setError("登录已失效，请在小程序重新进入");
+        });
       }).catch((e: any) => {
-        debugLog(`fetchProfile error: ${e?.message}`);
-        setError("登录已失效，请在小程序重新进入");
+        debugLog(`openid-login error: ${e?.message}`);
+        setError("登录失败: " + (e?.message || ""));
       });
       return;
     }