Merge origin/master into codex/status-bar-token-metrics

Resolve the agent-loop import conflict by retaining both durable request context and runtime policy context. Refresh the combined session fixtures and regenerate documentation catalogs. Mark PDF artifacts as binary so staged whitespace checks do not parse PDF bytes as text.

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

@@ -11,6 +11,10 @@
   - img
 - button "Edit":
   - img
+- button "Context injection":
+  - img
+  - img
+  - text: Context injection
 - 'button "Think The user wants me to write a single `run_code` program that:"':
   - img
   - img
@@ -20,10 +24,8 @@
   - img
   - text: Code Run bash echo and catch missing file read
 - img
-- text: Bash Echo CODE_ROUND_OK
-- 'button "Read Error: cannot read \"{{cwd}}/workspace/missing.txt\": not found"':
-  - img
-  - text: "Read Error: cannot read \"{{cwd}}/workspace/missing.txt\": not found"
+- text: Bash Echo CODE_ROUND_OK 失败 Read
+- button "missing.txt"
 - button "Think The program ran successfully. Let me now reply DONE as instructed.":
   - img
   - img