upgrade: adopt V8.31.1 (theme 1.3/1.4 redesigns, editor deep-canvas, guided launch, component library)

Overlay 190 upstream items (V8.22→8.31) preserving trade-pro theme,
registry tests, and design docs. Re-applied full patch set on identical
anchors (discovery/env_for/blocks.css/type-mapping/locale-override/
theme_color/frontend entries/test_theme_pro_v3 mods) plus compose pins.

Verified: theme suites 35/35; dual-baseline full run 415 passed vs
pristine 386+29 ours, FAILED-set diff EMPTY (same 10 Windows env fails).
Live: container 8.31.1-dev.1 healthy, hesupipe 192 entries intact,
trade-pro build 203 pages 0 errors.

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

tests/test_workspace_v812.py

@@ -47,9 +47,9 @@ def test_safe_import_is_default_and_direct_import_is_explicit(client):
 
 
 def test_wizard_does_not_claim_design_automatically_finished(client):
-    js=client.get('/ui/workspace.js').text
-    assert 'optional:true,view:\'design\'' in js
-    assert '不自动标记为完成' not in js or '设计可以随时修改' in js
+    js=client.get('/ui/workspace-guide.js').text
+    assert "id:'design'" in js and 'optional:true' in js
+    assert "done:false,optional:true" in js
 
 
 def test_live_job_endpoint_can_list_user_site_jobs(client):