feat(gemini): normalize base URL to strip API version suffixes

Automatically remove trailing slashes and version paths (e.g., /v1beta) from GEMINI_BASE_URL
Update GeminiAnalyzer to use the normalized URL and add type hints
Add test coverage for Gemini client configuration

tests/test_gemini.py

@@ -0,0 +1,86 @@
+from __future__ import annotations
+
+from pathlib import Path
+from types import ModuleType, SimpleNamespace
+import sys
+import unittest
+from unittest.mock import patch
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+fake_dotenv = ModuleType("dotenv")
+fake_dotenv.load_dotenv = lambda *args, **kwargs: None
+sys.modules.setdefault("dotenv", fake_dotenv)
+
+from uipath_explainator.config import Settings
+from uipath_explainator.gemini import GeminiAnalyzer
+
+
+class FakeHttpOptions:
+    def __init__(self, **kwargs) -> None:
+        self.kwargs = kwargs
+
+
+class FakeGenerateContentConfig:
+    def __init__(self, **kwargs) -> None:
+        self.kwargs = kwargs
+
+
+class FakeClient:
+    def __init__(self, api_key: str, http_options: FakeHttpOptions) -> None:
+        self.api_key = api_key
+        self.http_options = http_options
+        self.models = SimpleNamespace()
+
+
+class GeminiAnalyzerTests(unittest.TestCase):
+    def test_init_with_slots_declares_runtime_fields(self) -> None:
+        fake_types = SimpleNamespace(
+            HttpOptions=FakeHttpOptions,
+            GenerateContentConfig=FakeGenerateContentConfig,
+        )
+        fake_genai = ModuleType("google.genai")
+        fake_genai.Client = FakeClient
+        fake_genai.types = fake_types
+
+        fake_google = ModuleType("google")
+        fake_google.genai = fake_genai
+
+        with patch.dict(sys.modules, {"google": fake_google, "google.genai": fake_genai}):
+            analyzer = GeminiAnalyzer(Settings(api_key="test-key", base_url=None, model="gemini-test"))
+
+        self.assertIs(analyzer._types, fake_types)
+        self.assertIsInstance(analyzer._client, FakeClient)
+        self.assertEqual(analyzer._client.api_key, "test-key")
+        self.assertEqual(analyzer._client.http_options.kwargs, {"timeout": 120_000})
+
+    def test_init_strips_version_suffix_from_custom_base_url(self) -> None:
+        fake_types = SimpleNamespace(
+            HttpOptions=FakeHttpOptions,
+            GenerateContentConfig=FakeGenerateContentConfig,
+        )
+        fake_genai = ModuleType("google.genai")
+        fake_genai.Client = FakeClient
+        fake_genai.types = fake_types
+
+        fake_google = ModuleType("google")
+        fake_google.genai = fake_genai
+
+        with patch.dict(sys.modules, {"google": fake_google, "google.genai": fake_genai}):
+            analyzer = GeminiAnalyzer(
+                Settings(
+                    api_key="test-key",
+                    base_url="https://newapi.tootaio.com/v1beta/",
+                    model="gemini-test",
+                )
+            )
+
+        self.assertEqual(
+            analyzer._client.http_options.kwargs,
+            {"base_url": "https://newapi.tootaio.com", "timeout": 120_000},
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()