diff --git a/Libraries/PyKotor/tests/cli/test_resource_json_progress.py b/Libraries/PyKotor/tests/cli/test_resource_json_progress.py
new file mode 100644
index 000000000..ece82ae81
--- /dev/null
+++ b/Libraries/PyKotor/tests/cli/test_resource_json_progress.py
@@ -0,0 +1,63 @@
+"""Regression tests for JSON export progress reporting in CI/automation."""
+
+from __future__ import annotations
+
+import io
+import logging
+
+import pytest
+
+from pykotor.tools.resource_json import (
+    _ExportProgressReporter,
+    _format_progress_bar,
+    _supports_live_progress,
+)
+
+
+class _FakeTty(io.StringIO):
+    def isatty(self) -> bool:
+        return True
+
+
+def test_format_progress_bar_clamps_percent() -> None:
+    assert _format_progress_bar(-5.0) == "-" * len(_format_progress_bar(50.0))
+    assert _format_progress_bar(150.0) == "#" * len(_format_progress_bar(50.0))
+
+
+@pytest.mark.parametrize("env_name", ["CI", "GITHUB_ACTIONS"])
+@pytest.mark.parametrize("env_value", ["true", "1", "yes", " TRUE "])
+def test_supports_live_progress_disabled_in_automation_env(
+    monkeypatch: pytest.MonkeyPatch,
+    env_name: str,
+    env_value: str,
+) -> None:
+    monkeypatch.delenv("CI", raising=False)
+    monkeypatch.delenv("GITHUB_ACTIONS", raising=False)
+    monkeypatch.setenv(env_name, env_value)
+    assert _supports_live_progress(_FakeTty()) is False
+
+
+def test_supports_live_progress_enabled_for_tty_outside_ci(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.delenv("CI", raising=False)
+    monkeypatch.delenv("GITHUB_ACTIONS", raising=False)
+    assert _supports_live_progress(_FakeTty()) is True
+
+
+def test_export_progress_reporter_logs_instead_of_live_updates_in_ci(
+    monkeypatch: pytest.MonkeyPatch,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    monkeypatch.setenv("CI", "true")
+    caplog.set_level(logging.INFO)
+    reporter = _ExportProgressReporter(
+        logger=logging.getLogger("test_resource_json_progress"),
+        total_resources=10,
+        stream=_FakeTty(),
+    )
+
+    assert reporter.live_updates is False
+    reporter.update(1, "texture.tpc")
+    assert caplog.records
+    assert "texture.tpc" in caplog.records[0].message
diff --git a/Libraries/PyKotor/tests/diff_tool/test_cli_utils.py b/Libraries/PyKotor/tests/diff_tool/test_cli_utils.py
new file mode 100644
index 000000000..c65e2c635
--- /dev/null
+++ b/Libraries/PyKotor/tests/diff_tool/test_cli_utils.py
@@ -0,0 +1,89 @@
+"""Regression tests for diff_tool CLI path helpers."""
+
+from __future__ import annotations
+
+import pathlib
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+
+THIS_SCRIPT_PATH = pathlib.Path(__file__).resolve()
+PYKOTOR_PATH = THIS_SCRIPT_PATH.parents[2].joinpath("src")
+
+
+def add_sys_path(p: pathlib.Path) -> None:
+    working_dir = str(p)
+    if working_dir not in sys.path:
+        sys.path.append(working_dir)
+
+
+if PYKOTOR_PATH.joinpath("pykotor").exists():
+    add_sys_path(PYKOTOR_PATH)
+
+from pykotor.diff_tool.cli_utils import (  # noqa: E402  # pyright: ignore[reportMissingImports]
+    is_kotor_install_dir,
+    normalize_path_arg,
+)
+from pykotor.tools.patching import is_kotor_install_dir as patching_is_kotor_install_dir  # noqa: E402
+from pykotor.tslpatcher.diff.engine import (  # noqa: E402
+    is_kotor_install_dir as engine_is_kotor_install_dir,
+)
+
+
+class TestNormalizePathArg(unittest.TestCase):
+    def test_none_and_blank_inputs(self) -> None:
+        self.assertIsNone(normalize_path_arg(None))
+        self.assertIsNone(normalize_path_arg(""))
+        self.assertIsNone(normalize_path_arg("   "))
+
+    def test_strips_surrounding_quotes(self) -> None:
+        self.assertEqual(normalize_path_arg('"C:\\KOTOR"'), "C:\\KOTOR")
+        self.assertEqual(normalize_path_arg("'/opt/kotor'"), "/opt/kotor")
+
+    def test_fixes_powershell_quote_escape_mangling(self) -> None:
+        mangled = 'C:\\Program Files\\KOTOR" C:\\other\\path'
+        self.assertEqual(normalize_path_arg(mangled), "C:\\Program Files\\KOTOR")
+
+    def test_strips_trailing_slashes_and_embedded_quotes(self) -> None:
+        self.assertEqual(normalize_path_arg('C:\\path\\'), "C:\\path")
+        self.assertEqual(normalize_path_arg('C:\\path"'), "C:\\path")
+
+
+class TestIsKotorInstallDir(unittest.TestCase):
+    def test_detects_install_with_exact_chitin_key_name(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp) / "Kotor"
+            root.mkdir()
+            (root / "chitin.key").write_bytes(b"")
+
+            self.assertTrue(is_kotor_install_dir(root))
+            self.assertTrue(patching_is_kotor_install_dir(root))
+            self.assertTrue(engine_is_kotor_install_dir(root))
+
+    def test_rejects_directory_without_chitin_key(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp)
+
+            self.assertFalse(is_kotor_install_dir(root))
+            self.assertFalse(patching_is_kotor_install_dir(root))
+            self.assertFalse(engine_is_kotor_install_dir(root))
+
+    @unittest.skipIf(
+        sys.platform == "win32",
+        "Case-mismatch path semantics differ on Windows filesystems.",
+    )
+    def test_detects_install_with_case_mismatched_paths(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp) / "GameDir"
+            root.mkdir()
+            (root / "CHITIN.KEY").write_bytes(b"")
+
+            mismatched = root.parent / "gamedir"
+            self.assertTrue(is_kotor_install_dir(mismatched))
+            self.assertTrue(patching_is_kotor_install_dir(mismatched))
+            self.assertTrue(engine_is_kotor_install_dir(mismatched))
+
+
+if __name__ == "__main__":
+    unittest.main()