snapshot: WIP 5j replay reliability (B1 watchdog + dialog handlers + grounding drift)

Snapshot avant correction du blocage relance Léa (3 incidents 24h: SSH refusé,
polls morts ×2). Point de rollback stable.

Contenu:
- agent_v1/core/executor.py: 5 patchs dialog handling (saveas drift, close_tab
  hotkey fallback, confirm_save Unicode apostrophe, foreground dialog
  recontextualization, runtime_dialog in-loop) + helpers normalize_window_hint,
  requires_post_verify_window_transition
- agent_v1/core/grounding.py: garde drift template fix (fallback_x/y plumbed)
- server_v1/replay_watchdog.py (NEW): orphan watchdog B1, scan 10s timeout 30s
- server_v1/api_stream.py: dispatched_action plumbing, watchdog lifespan,
  metrics endpoint
- server_v1/replay_engine.py: _schedule_retry préserve original_action +
  dispatched_action
- stream_processor.py: gardes _infer_tab_switch_target (no false switch_tab
  on save_as dialog open) + _attach_expected_window_before
- tests/integration: test_replay_watchdog.py (8 cas), test_stream_processor.py
- tests/unit: test_executor_verify_window_guard.py (start_button, close_tab,
  runtime_dialog, post_verify, transition fallbacks)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/integration/test_client_server_compat.py

@@ -64,6 +64,31 @@ class TestStreamerEndpoints:
         _, kwargs = finalize_calls[0]
         assert kwargs["params"]["session_id"] == "sess_test_002"
 
+    def test_finalize_callback_receives_server_payload(self):
+        """Le payload enrichi de /finalize est remonté au callback client."""
+        from agent_v0.agent_v1.network.streamer import TraceStreamer
+
+        payload = {
+            "status": "queued_for_processing",
+            "replay_ready": True,
+            "replay_request": {
+                "endpoint": "/api/v1/traces/stream/replay-session",
+                "session_id": "sess_test_008",
+                "machine_id": "pc-alpha",
+            },
+        }
+        seen = []
+
+        with patch("agent_v0.agent_v1.network.streamer.requests") as mock_req:
+            mock_req.post.return_value = MagicMock(ok=True, json=lambda: payload)
+            streamer = TraceStreamer("sess_test_008")
+            streamer.set_on_finalize_result(seen.append)
+            streamer._server_available = True
+            streamer.running = False
+            streamer._finalize_session()
+
+        assert seen == [payload]
+
 
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