test(web): re-record composer stats goldens over merged master

Reapplies this branch's one added occupancy segment on top of master's own
golden refresh from the preceding merge. Recorded with DSH_SNAPSHOT=refresh,
not hand-edited: an attempt to strip the co-recorded context-injection
affordance out of these files broke replay, which is the suite working as
intended — a golden must match the real render byte-for-byte.

Web replay is now 76/77. The one failure, queue-actions ("edits and removes
exact pending occurrences", counts 2 user/message events where it expects 1),
reproduces at pristine origin/master and is untouched here.

apps/web/tests/snapshots/code-mode-round/ui.expected.md

@@ -11,6 +11,7 @@
   - img
 - button "编辑":
   - img
+- button "▸ 上下文注入"
 - 'button "Think The user wants me to write a single `run_code` program that:"':
   - img
   - img
@@ -40,4 +41,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 52% Input 17.2K tok · Output 252 tok
+- text: 1 turns · 2 steps Tool call {{duration}} Context 7% of 128K Cache hit 52% Input 17.2K tok · Output 252 tok