docs(tests): update README to reflect current test layout

- Fix stale paths: tests/pipeline → tests/unit_tests/pipeline
- Update CI Python versions: 3.11, 3.12, 3.13
- Add test directory structure for box, config, platform, plugin, provider, storage
- Document pytest markers and uv commands
- Mention planned E2E tests

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/README.md

@@ -10,16 +10,16 @@ Due to circular import dependencies in the pipeline module structure, the test f
 
 ```
 tests/
-├── pipeline/                      # Pipeline stage tests
-│   ├── conftest.py               # Shared fixtures and test infrastructure
-│   ├── test_simple.py            # Basic infrastructure tests (always pass)
-│   ├── test_bansess.py           # BanSessionCheckStage tests
-│   ├── test_ratelimit.py         # RateLimit stage tests
-│   ├── test_preproc.py           # PreProcessor stage tests
-│   ├── test_respback.py          # SendResponseBackStage tests
-│   ├── test_resprule.py          # GroupRespondRuleCheckStage tests
-│   ├── test_pipelinemgr.py       # PipelineManager tests
-│   └── test_stages_integration.py # Integration tests
+├── __init__.py
+├── unit_tests/                    # Unit tests
+│   ├── box/                       # Box module tests
+│   ├── config/                    # Configuration tests
+│   ├── pipeline/                  # Pipeline stage tests
+│   │   └── conftest.py           # Shared fixtures and test infrastructure
+│   ├── platform/                  # Platform adapter tests
+│   ├── plugin/                    # Plugin system tests
+│   ├── provider/                  # Provider tests
+│   └── storage/                   # Storage tests
 └── README.md                      # This file
 ```
 
@@ -56,29 +56,42 @@ This script automatically:
 
 ### Manual test execution
 
-#### Run all tests
+#### Run all unit tests
 ```bash
-pytest tests/pipeline/
+uv run pytest tests/unit_tests/ --cov=langbot --cov-report=xml --cov-report=term
 ```
 
-#### Run only simple tests (no imports, always pass)
+#### Run specific test module
 ```bash
-pytest tests/pipeline/test_simple.py -v
+uv run pytest tests/unit_tests/pipeline/ -v
 ```
 
 #### Run specific test file
 ```bash
-pytest tests/pipeline/test_bansess.py -v
+uv run pytest tests/unit_tests/pipeline/test_bansess.py -v
 ```
 
 #### Run with coverage
 ```bash
-pytest tests/pipeline/ --cov=pkg/pipeline --cov-report=html
+uv run pytest tests/unit_tests/pipeline/ --cov=langbot --cov-report=html
 ```
 
 #### Run specific test
 ```bash
-pytest tests/pipeline/test_bansess.py::test_bansess_whitelist_allow -v
+uv run pytest tests/unit_tests/pipeline/test_bansess.py::test_bansess_whitelist_allow -v
+```
+
+### Using markers
+
+```bash
+# Run only unit tests
+uv run pytest tests/unit_tests/ -m unit
+
+# Run only integration tests (when available)
+uv run pytest tests/ -m integration
+
+# Skip slow tests
+uv run pytest tests/unit_tests/ -m "not slow"
 ```
 
 ### Known Issues
@@ -86,8 +99,8 @@ pytest tests/pipeline/test_bansess.py::test_bansess_whitelist_allow -v
 Some tests may encounter circular import errors. This is a known issue with the current module structure. The test infrastructure is designed to work around this using lazy imports, but if you encounter issues:
 
 1. Make sure you're running from the project root directory
-2. Ensure the virtual environment is activated
-3. Try running `test_simple.py` first to verify the test infrastructure works
+2. Ensure dependencies are installed: `uv sync --dev`
+3. Try running a simple test first to verify the test infrastructure works
 
 ## CI/CD Integration
 
@@ -97,7 +110,7 @@ Tests are automatically run on:
 - Push to PR branch
 - Push to master/develop branches
 
-The workflow runs tests on Python 3.10, 3.11, and 3.12 to ensure compatibility.
+The workflow runs tests on Python 3.11, 3.12, and 3.13 to ensure compatibility.
 
 ## Adding New Tests
 
@@ -111,8 +124,8 @@ Create a new test file `test_<stage_name>.py`:
 """
 
 import pytest
-from pkg.pipeline.<module>.<stage> import <StageClass>
-from pkg.pipeline import entities as pipeline_entities
+from langbot.pkg.pipeline.<module>.<stage> import <StageClass>
+from langbot.pkg.pipeline import entities as pipeline_entities
 
 
 @pytest.mark.asyncio
@@ -128,7 +141,7 @@ async def test_stage_basic_flow(mock_app, sample_query):
 
 ### 2. For additional fixtures
 
-Add new fixtures to `conftest.py`:
+Add new fixtures to the appropriate `conftest.py`:
 
 ```python
 @pytest.fixture
@@ -142,7 +155,7 @@ def my_custom_fixture():
 Use the helper functions in `conftest.py`:
 
 ```python
-from tests.pipeline.conftest import create_stage_result, assert_result_continue
+from tests.unit_tests.pipeline.conftest import create_stage_result, assert_result_continue
 
 result = create_stage_result(
     result_type=pipeline_entities.ResultType.CONTINUE,
@@ -166,7 +179,7 @@ assert_result_continue(result)
 ### Import errors
 Make sure you've installed the package in development mode:
 ```bash
-uv pip install -e .
+uv sync --dev
 ```
 
 ### Async test failures
@@ -178,6 +191,7 @@ Check that you're mocking at the right level and using `AsyncMock` for async fun
 ## Future Enhancements
 
 - [ ] Add integration tests for full pipeline execution
+- [ ] Add E2E tests
 - [ ] Add performance benchmarks
 - [ ] Add mutation testing for better coverage quality
 - [ ] Add property-based testing with Hypothesis