Follow-ups on top of @xxxigm's salvaged bridge (#33294):
- Remove the now-dead narrow item/started-only mapper from #38835
(_codex_note_to_tool_progress) — the full bridge supersedes it and
keeps the same tool-name contract; its tests are repointed at the
bridge helpers.
- Preserve main's request_routing/approval-bypass wiring on the
CodexAppServerSession constructor (landed after the PR was filed).
- Gate agentMessage interim delivery on display.show_commentary so the
app-server runtime honors the same toggle as the codex_responses
commentary channel (tool progress is unaffected).
- Add json import (bridge helpers use json.dumps) and modernize the
wiring test's stub agent for main's usage-accounting attributes.
42 tests across five suites:
* ``TestCodexItemToToolName`` / ``TestCodexItemToArgs`` /
``TestCodexItemToPreview`` / ``TestCodexItemCompletionPayload`` —
pin the per-type mapping so the synthetic tool name + args the
UI sees match what ``CodexEventProjector`` writes into messages.
* ``TestStreamDeltaDispatch`` / ``TestToolProgressDispatch`` /
``TestAgentMessageInterimDispatch`` — drive each Codex
notification shape through the bridge and assert the right
agent callback fires with the right arguments (including the
duration / is_error / result kwargs the gateway renders).
* ``TestBridgeRobustness`` — defensive paths: non-dict
notifications, missing params, raising callbacks (must not
tear down the codex turn loop), and agents without callbacks
registered (cron / gateway-less contexts).
* ``TestBridgeWiredInRuntime`` — integration guard that
``run_codex_app_server_turn`` actually constructs the session
with ``on_event=<bridge>``, preventing a future refactor from
silently regressing live progress visibility again.
