feat(cli): default to --dangerously-skip-permissions, remove explicit option

Always forward --dangerously-skip-permissions to claude binary without
requiring the user to pass the flag manually. Removes the option from
help output and CLI signature.

- Remove --dangerously-skip-permissions click option
- Always append the flag to the claude command
- Update tests to assert default behavior and help output
- Extend .gitignore with desktop build/release directories

tests/test_cli.py

@@ -12,12 +12,12 @@ class TestCliHelp:
     """Tests for CLI help and basic invocation."""
 
     def test_help_shows_options(self) -> None:
-        """--help should show cwd and skip permissions options."""
+        """--help should show cwd option only."""
         runner = CliRunner()
         result = runner.invoke(cli, ["--help"])
         assert result.exit_code == 0
         assert "--cwd" in result.output
-        assert "--dangerously-skip-permissions" in result.output
+        assert "--dangerously-skip-permissions" not in result.output
 
     def test_version_shows_version(self) -> None:
         """--version should show package version."""
@@ -47,7 +47,7 @@ class TestCliDefaultBehavior:
     """Tests for default chat behavior."""
 
     def test_no_subcommand_runs_claude(self) -> None:
-        """Running without subcommand should invoke claude binary."""
+        """Running without subcommand should invoke claude binary with skip-permissions."""
         runner = CliRunner()
 
         with (
@@ -59,7 +59,7 @@ class TestCliDefaultBehavior:
             assert result.exit_code == 0
             mock_run.assert_called_once()
             call_args = mock_run.call_args
-            assert call_args[0][0] == ["/usr/bin/claude"]
+            assert call_args[0][0] == ["/usr/bin/claude", "--dangerously-skip-permissions"]
 
     def test_missing_claude_binary_error(self) -> None:
         """Should exit with error when claude binary not found."""
@@ -86,20 +86,6 @@ class TestCliDefaultBehavior:
             call_kwargs = mock_run.call_args.kwargs
             assert call_kwargs.get("cwd") == str(test_dir.resolve())
 
-    def test_dangerously_skip_permissions_flag(self) -> None:
-        """--dangerously-skip-permissions should be forwarded."""
-        runner = CliRunner()
-
-        with (
-            patch("bin.cli.shutil.which", return_value="/usr/bin/claude"),
-            patch("bin.cli.subprocess.run") as mock_run,
-        ):
-            mock_run.return_value = MagicMock(returncode=0)
-            result = runner.invoke(cli, ["--dangerously-skip-permissions"])
-            assert result.exit_code == 0
-            call_args = mock_run.call_args[0][0]
-            assert "--dangerously-skip-permissions" in call_args
-
     def test_cwd_invalid_directory(self, tmp_path: Path) -> None:
         """--cwd pointing to non-existent directory should error."""
         runner = CliRunner()