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>

tests/test_v831_automotive_ref.py

@@ -16,7 +16,8 @@ def test_automotive_new_and_old_versions_remain_available(factory):
         assert theme_store.compatibility('automotive',version)['valid']
         assert ('auto31-home' in (p/'pages/home.html').read_text()) == (version == '1.4.0')
         assert "'pages/' ~ kind" in (p/'pro.html').read_text()
-    assert theme_store.latest('industrial')=='1.3.0'
+    assert theme_store.latest('industrial')=='1.3.1'
+    assert theme_store.resolve('industrial','1.3.0') != theme_store.resolve('industrial')
     assert 'auto31-home' in (theme_store.resolve('automotive','1.4.0')/'pages/home.html').read_text()