test(tui): fix stale mocks + xdist flakes in TUI test suite

All 61 TUI-related tests green across 3 consecutive xdist runs.

tests/tui_gateway/test_protocol.py:
- rename `get_messages` → `get_messages_as_conversation` on mock DB (method
  was renamed in the real backend, test was still stubbing the old name)
- update tool-message shape expectation: `{role, name, context}` matches
  current `_history_to_messages` output, not the legacy `{role, text}`

tests/hermes_cli/test_tui_resume_flow.py:
- `cmd_chat` grew a first-run provider-gate that bailed to "Run: hermes
  setup" before `_launch_tui` was ever reached; 3 tests stubbed
  `_resolve_last_session` + `_launch_tui` but not the gate
- factored a `main_mod` fixture that stubs `_has_any_provider_configured`,
  reused by all three tests

tests/test_tui_gateway_server.py:
- `test_config_set_personality_resets_history_and_returns_info` was flaky
  under xdist because the real `_write_config_key` touches
  `~/.hermes/config.yaml`, racing with any other worker that writes
  config. Stub it in the test.

tests/cli/test_cli_approval_ui.py

@@ -141,3 +141,116 @@ class TestCliApprovalUi:
         assert "archive-" in rendered
         assert "keyring.gpg" in rendered
         assert "status=progress" in rendered
+
+    def test_approval_display_preserves_command_and_choices_with_long_description(self):
+        """Regression: long tirith descriptions used to push approve/deny off-screen.
+
+        The panel must always render the command and every choice, even when
+        the description would otherwise wrap into 10+ lines. The description
+        gets truncated with a marker instead.
+        """
+        cli = _make_cli_stub()
+        long_desc = (
+            "Security scan — [CRITICAL] Destructive shell command with wildcard expansion: "
+            "The command performs a recursive deletion of log files which may contain "
+            "audit information relevant to active incident investigations, running services "
+            "that rely on log files for state, rotated archives, and other system artifacts. "
+            "Review whether this is intended before approving. Consider whether a targeted "
+            "deletion with more specific filters would better match the intent."
+        )
+        cli._approval_state = {
+            "command": "rm -rf /var/log/apache2/*.log",
+            "description": long_desc,
+            "choices": ["once", "session", "always", "deny"],
+            "selected": 0,
+            "response_queue": queue.Queue(),
+        }
+
+        # Simulate a compact terminal where the old unbounded panel would overflow.
+        import shutil as _shutil
+
+        with patch("cli.shutil.get_terminal_size",
+                   return_value=_shutil.os.terminal_size((100, 20))):
+            fragments = cli._get_approval_display_fragments()
+
+        rendered = "".join(text for _style, text in fragments)
+
+        # Command must be fully visible (rm -rf /var/log/apache2/*.log is short).
+        assert "rm -rf /var/log/apache2/*.log" in rendered
+
+        # Every choice must render — this is the core bug: approve/deny were
+        # getting clipped off the bottom of the panel.
+        assert "Allow once" in rendered
+        assert "Allow for this session" in rendered
+        assert "Add to permanent allowlist" in rendered
+        assert "Deny" in rendered
+
+        # The bottom border must render (i.e. the panel is self-contained).
+        assert rendered.rstrip().endswith("╯")
+
+        # The description gets truncated — marker should appear.
+        assert "(description truncated)" in rendered
+
+    def test_approval_display_skips_description_on_very_short_terminal(self):
+        """On a 12-row terminal, only the command and choices have room.
+
+        The description is dropped entirely rather than partially shown, so the
+        choices never get clipped.
+        """
+        cli = _make_cli_stub()
+        cli._approval_state = {
+            "command": "rm -rf /var/log/apache2/*.log",
+            "description": "recursive delete",
+            "choices": ["once", "session", "always", "deny"],
+            "selected": 0,
+            "response_queue": queue.Queue(),
+        }
+
+        import shutil as _shutil
+
+        with patch("cli.shutil.get_terminal_size",
+                   return_value=_shutil.os.terminal_size((100, 12))):
+            fragments = cli._get_approval_display_fragments()
+
+        rendered = "".join(text for _style, text in fragments)
+
+        # Command visible.
+        assert "rm -rf /var/log/apache2/*.log" in rendered
+        # All four choices visible.
+        for label in ("Allow once", "Allow for this session",
+                      "Add to permanent allowlist", "Deny"):
+            assert label in rendered, f"choice {label!r} missing"
+
+    def test_approval_display_truncates_giant_command_in_view_mode(self):
+        """If the user hits /view on a massive command, choices still render.
+
+        The command gets truncated with a marker; the description gets dropped
+        if there's no remaining row budget.
+        """
+        cli = _make_cli_stub()
+        # 50 lines of command when wrapped at ~64 chars.
+        giant_cmd = "bash -c 'echo " + ("x" * 3000) + "'"
+        cli._approval_state = {
+            "command": giant_cmd,
+            "description": "shell command via -c/-lc flag",
+            "choices": ["once", "session", "always", "deny"],
+            "selected": 0,
+            "show_full": True,
+            "response_queue": queue.Queue(),
+        }
+
+        import shutil as _shutil
+
+        with patch("cli.shutil.get_terminal_size",
+                   return_value=_shutil.os.terminal_size((100, 24))):
+            fragments = cli._get_approval_display_fragments()
+
+        rendered = "".join(text for _style, text in fragments)
+
+        # All four choices visible even with a huge command.
+        for label in ("Allow once", "Allow for this session",
+                      "Add to permanent allowlist", "Deny"):
+            assert label in rendered, f"choice {label!r} missing"
+
+        # Command got truncated with a marker.
+        assert "(command truncated" in rendered