fix(rectification): plain-word opening with examples in the stem, plain de-duplicated step receipt (BUG-1049, BUG-1050)

- BUG-1049 (recurrence of BUG-504): the opening stem carries six examples and
  an example answer again and is server-owned on the zero-evidence opening;
  the body is two plain sentences (no 大运/盘面/代表分钟/精确到秒, no year, no
  question). Stem de-dup compares whole sentences / near-equality instead of a
  12-char prefix, which had deleted the body's examples sentence since
  aa7ccb30 (BUG-604) + dd8f35f7 (BUG-648).
- BUG-1050: plain step labels; a finished step label shows once and
  「已完成 N 步」counts shown rows; failed rows read 「…未完成」 from the
  in-progress wording.
- Skill 10.0.30 -> 10.0.31 (OpeningPolicy); 10.0.30 kept as deprecated.
- VOICE / DESIGN / CHANGELOG / BUG_HISTORY / PROGRESS / real-device checklist
  and screenshots.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017eEAG8HD3mm8gsKXgk8uU8

frontend/tests/rectification-agentic-entry.test.ts

@@ -409,8 +409,10 @@ test("rectification keeps receipts for the varga sentence and shows live tool pr
   assert.doesNotMatch(chat, /activeActivity/);
   assert.match(chat, /RECTIFICATION_TOOL_PROGRESS_LABELS/);
   assert.match(chat, /rectificationCompletedTrail\(activityReceiptState\.completedSteps\)/);
-  assert.match(progressLabels, /正在读取校正记录/);
-  assert.match(progressLabels, /正在比较候选时间/);
+  // 原值: /正在读取校正记录/、/正在比较候选时间/ / 新值: /正在看你的资料/、/正在重新对照盘面/ / 原因: BUG-1050 步骤名改大白话
+  assert.match(progressLabels, /正在看你的资料/);
+  assert.match(progressLabels, /正在重新对照盘面/);
+  assert.doesNotMatch(progressLabels, /对话焦点|校正记录/);
   assert.doesNotMatch(chat, /<CompletedActivityReceipt/);
   assert.match(chat, /event\.type === "tool\.activity"/);
   assert.match(chat, /event\.status === "started"/);