upgrade: adopt V8.33.1 — final merge, our patches upstreamed natively

V8.33.0 absorbed our entire platform patch set as native features
(discovery/env_for macro override/blocks.css priority/type-mapping fix/
frontend entries/locale override) and synced trade-pro from our remote;
V8.33.1 adds HESU PIPE industrial-theme home fixes (1.3.1).

Zero patch re-application this round — all verified native. Theme
suites 35/35; full run 428 passed + same 10 known Windows env fails
(FAILED set unchanged). Live: container 8.33.1-dev.1 healthy, hesupipe
192 entries intact, trade-pro build 203 pages 0 errors.

Patch registry retired to archive — future upgrades are plain overlay.

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

app/multilingual.py

@@ -97,7 +97,7 @@ def set_site_locale(site_id:str,data:LocaleIn,request:Request):
     enterprise.require(request,site_id,'owner')
     try:locale=locale_value(data.locale)
     except ValueError as exc:raise HTTPException(400,str(exc))
-    site=db.one('SELECT settings_json FROM sites WHERE id=?',(site_id,))
+    site=db.one('SELECT settings_json,theme FROM sites WHERE id=?',(site_id,))
     if not site:raise HTTPException(404,'网站不存在')
     settings=json.loads(site['settings_json'] or '{}')
     settings['locale']=locale
@@ -195,12 +195,13 @@ def site_locale(site_id):
     row=db.one('SELECT locale FROM language_sites WHERE site_id=?',(site_id,))
     if row:return row['locale']
     # Per-site locale override (e.g. standalone English sites outside any language group)
-    site=db.one('SELECT settings_json FROM sites WHERE id=?',(site_id,))
+    site=db.one('SELECT settings_json,theme FROM sites WHERE id=?',(site_id,))
     try:override=json.loads(site['settings_json'] or '{}').get('locale') if site else None
     except ValueError:override=None
     if override:
         try:return locale_value(override)
         except ValueError:pass
+    if site and site['theme']=='trade-pro':return 'en'
     return 'zh-CN'
 
 def assert_build_safe(site_id):