upgrade: adopt V8.32.0-dev.1 (theme preview iframe fix, editor simple mode)

Overlay 46 upstream items; full patch set re-applied (all patched files
reset by overlay regardless of upstream change status — lesson recorded).
Verified: theme suites 35/35; dual-baseline 418 passed vs pristine
389+29 ours, FAILED-set diff EMPTY (same 10 Windows env fails).
Live: container 8.32.0-dev.1 healthy, hesupipe 192 entries intact,
trade-pro build 203 pages 0 errors.

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

reports/v832/V8_32_验收数据.json

@@ -0,0 +1,29 @@
+{
+  "version": "8.32.0-dev.1",
+  "generated_utc": "2026-10-26T02:31:24.270437+00:00",
+  "python": {
+    "count": 400,
+    "batches": 18,
+    "batch_pass_after_retest": 18,
+    "initial_failed_batch": 15,
+    "initial_cause": "test wording assertion outdated after UI label changed",
+    "retested_batch_passed": 17,
+    "single_process_stalled": true
+  },
+  "javascript": {
+    "passed": 39
+  },
+  "http_worker": "passed",
+  "browser_isolated": {
+    "editor_desktop": true,
+    "editor_mobile_390": true,
+    "theme_preview_success_and_failure": true,
+    "gallery_error_retry": true,
+    "script_errors": 0
+  },
+  "production_verified": false,
+  "limitations": [
+    "real authenticated full Chromium against backend not verified: container policy blocks localhost",
+    "official Art Design Pro build and production PG/Redis not verified"
+  ]
+}