test(feedback): fix the assembled e2e record path and teardown restore

The feedback-command e2e now drives the recorded prompt through a separate
all-modes test that arms whenTurnSettled before sending and writes the
fixture back via recordFixture in record mode; the acknowledgement golden
test runs only in replay/refresh. The scaffold restores the pinned DSH_HOME
on the persistence-root setup failure path, and the telemetry subsystems
page links the README's sharing-disclosure anchor.

apps/web/tests/snapshots/feedback-command/ack.expected.md

@@ -1,6 +1,8 @@
 - banner:
   - navigation "Session hierarchy":
     - button "Reply with the single word" [disabled]
+  - img
+  - text: 标准模式
   - tablist:
     - tab "Chat" [selected]
     - tab "Trajectory"