feat(partner): map pick UX and Tencent LBS SN signature

Hide locate on store forms; restore optimized locpicker overlay.
Add TENCENT_LBS_SECRET_KEY and server-side sig for WebServiceAPI.

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

apps/h5-partner/src/pages/StoreDetailPage.tsx

@@ -6,7 +6,7 @@ import { toastError, toastSuccess } from '../lib/toast';
 import { usePartnerSession } from '../contexts/PartnerSessionContext';
 import { canManagePartnerStore } from '../lib/partnerAccess';
 import { normalizeStringArray, patchEnvPhotoAt } from '../lib/storeDraft';
-import { formatStoreCoords, locateStorePosition } from '../lib/storeLocate';
+import { formatStoreCoords } from '../lib/storeLocate';
 import OssUploadField from '../components/OssUploadField';
 import TencentLocPickerOverlay from '../components/TencentLocPickerOverlay';
 import {
@@ -55,7 +55,6 @@ export default function StoreDetailPage() {
   const [statusSaving, setStatusSaving] = useState(false);
   const [saving, setSaving] = useState(false);
   const [mediaSaving, setMediaSaving] = useState(false);
-  const [locating, setLocating] = useState(false);
   const [mapPickerOpen, setMapPickerOpen] = useState(false);
   const [actionError, setActionError] = useState('');
   const [closeConfirmOpen, setCloseConfirmOpen] = useState(false);
@@ -346,35 +345,6 @@ export default function StoreDetailPage() {
             <textarea disabled={readOnly} rows={2} value={form.address} onChange={(e) => setForm({ ...form, address: e.target.value })} />
             {!readOnly ? (
               <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginTop: 8, flexWrap: 'wrap' }}>
-                <button
-                  type="button"
-                  className="partner-btn-outline"
-                  style={{ padding: '8px 12px', fontSize: 13 }}
-                  disabled={locating}
-                  onClick={() => {
-                    void (async () => {
-                      setLocating(true);
-                      setActionError('');
-                      try {
-                        const pos = await locateStorePosition();
-                        setForm((prev) => ({
-                          ...prev,
-                          latitude: String(pos.latitude),
-                          longitude: String(pos.longitude),
-                        }));
-                        toastSuccess('已获取当前坐标');
-                      } catch (e) {
-                        const msg = e instanceof Error ? e.message : '定位失败';
-                        setActionError(msg);
-                        toastError(msg);
-                      } finally {
-                        setLocating(false);
-                      }
-                    })();
-                  }}
-                >
-                  {locating ? '定位中…' : '获取当前位置'}
-                </button>
                 <button
                   type="button"
                   className="partner-btn-outline"
@@ -386,7 +356,7 @@ export default function StoreDetailPage() {
                 <span className="label-md text-muted">
                   {formatStoreCoords(form.latitude, form.longitude)
                     ? `坐标：${formatStoreCoords(form.latitude, form.longitude)}`
-                    : '未定位'}
+                    : '未选点（可地图选点）'}
                 </span>
               </div>
             ) : formatStoreCoords(form.latitude, form.longitude) ? (