diff --git a/tests/tui_gateway/test_shell_hooks_registration.py b/tests/tui_gateway/test_shell_hooks_registration.py
new file mode 100644
index 000000000000..f0542410014b
--- /dev/null
+++ b/tests/tui_gateway/test_shell_hooks_registration.py
@@ -0,0 +1,59 @@
+"""Test that tui_gateway/entry.py registers shell hooks at startup.
+
+Regression test for GitHub issue #43823 — shell hooks configured in
+config.yaml were silently ignored in the desktop/TUI entry point because
+``register_from_config()`` was never called from ``tui_gateway/entry.py``.
+"""
+
+import importlib
+import sys
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+
+class TestTuiEntryShellHooks:
+    """Verify shell hooks are registered during TUI startup."""
+
+    def test_register_from_config_called_at_startup(self):
+        """``main()`` must call ``register_from_config`` so that
+        declarative shell hooks (e.g. ``pre_tool_call``) fire in desktop
+        sessions just like they do in CLI and gateway sessions."""
+        # We need to mock the entire startup sequence so main() doesn't
+        # actually start reading stdin or writing to stdout.
+        mock_register = MagicMock()
+
+        with patch("tui_gateway.entry._install_sidecar_publisher"), \
+             patch("tui_gateway.entry.write_json", side_effect=[True, lambda *a, **k: True]) as mock_write, \
+             patch("hermes_cli.config.load_config", return_value={}), \
+             patch("agent.shell_hooks.register_from_config", mock_register), \
+             patch("sys.stdin", []):
+            # Reload to pick up the mock targets
+            import tui_gateway.entry as entry_mod
+            # main() reads from sys.stdin — empty list means no lines, exits loop
+            try:
+                entry_mod.main()
+            except SystemExit:
+                pass
+
+        mock_register.assert_called_once()
+        call_kwargs = mock_register.call_args
+        assert call_kwargs[1].get("accept_hooks") is False
+
+    def test_register_failure_does_not_block_startup(self):
+        """If ``register_from_config`` raises, the TUI must still start."""
+        mock_register = MagicMock(side_effect=RuntimeError("boom"))
+
+        with patch("tui_gateway.entry._install_sidecar_publisher"), \
+             patch("tui_gateway.entry.write_json", side_effect=[True, lambda *a, **k: True]), \
+             patch("hermes_cli.config.load_config", return_value={}), \
+             patch("agent.shell_hooks.register_from_config", mock_register), \
+             patch("sys.stdin", []):
+            import tui_gateway.entry as entry_mod
+            try:
+                entry_mod.main()
+            except SystemExit:
+                pass
+            # main() should not have crashed — it completed normally
+
+        mock_register.assert_called_once()
diff --git a/tui_gateway/entry.py b/tui_gateway/entry.py
index 7069ec97605f..6fd1a704b508 100644
--- a/tui_gateway/entry.py
+++ b/tui_gateway/entry.py
@@ -263,6 +263,21 @@ def _discover_mcp_background() -> None:
         global _mcp_discovery_thread
         _mcp_discovery_thread = _mcp_thread
 
+    # Register declarative shell hooks from config.yaml.  The TUI / desktop
+    # entry point has no TTY for consent prompts, so accept_hooks=False and
+    # the effective value is resolved from HERMES_ACCEPT_HOOKS env var or
+    # hooks_auto_accept in config — matching the gateway pattern.
+    # Failures are logged but must never block TUI startup.
+    try:
+        from hermes_cli.config import load_config
+        from agent.shell_hooks import register_from_config
+        register_from_config(load_config(), accept_hooks=False)
+    except Exception:
+        logger.debug(
+            "shell-hook registration failed at TUI startup",
+            exc_info=True,
+        )
+
     if not write_json({
         "jsonrpc": "2.0",
         "method": "event",