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+# Copilot Instructions for nipanel-python
+
+## Repository Overview
+
+**nipanel** is a Python package that provides support for creating and controlling measurement and visualization panels. It's developed by NI and enables Python applications to create Streamlit-based panels that can be served and controlled via gRPC services.
+
+### Key Repository Information
+- **Language**: Python (3.9+)
+- **Package Manager**: Poetry 2.1+
+- **Framework**: Uses Streamlit for panel UI, gRPC for communication
+- **Size**: Medium-sized repository (~1300 lines of code in src/)
+- **Architecture**: Client-server model with Python panel service and Streamlit frontend
+- **Testing**: Comprehensive test suite with unit, integration, and acceptance tests
+
+## Build and Validation Commands
+
+**CRITICAL**: Always run commands in this exact order for successful builds and validation.
+
+### Environment Setup
+```powershell
+# 1. Verify Poetry is installed (required version 2.1+)
+poetry --version
+
+# 2. Install project dependencies (ALWAYS run first)
+poetry install
+
+# 3. For examples and development work
+poetry install --with examples
+
+# 4. For documentation work
+poetry install --with docs
+```
+
+### Development Workflow Commands
+Follow this sequence when making changes:
+
+```powershell
+# 1. Run linting (shows warnings but continues)
+poetry run nps lint
+
+# 2. Apply automatic formatting fixes
+poetry run nps fix
+
+# 3. Run static type checking (must pass)
+poetry run mypy
+
+# 4. Run security analysis (must pass)
+poetry run bandit -c pyproject.toml -r src/nipanel
+
+# 5. Run all tests (must pass)
+poetry run pytest -v
+
+# 6. Run only unit tests (faster feedback)
+poetry run pytest ./tests/unit -v
+
+# 7. Run tests with coverage
+poetry run pytest ./tests/unit -v --cov=nipanel
+```
+
+### Documentation Build
+```powershell
+# Build documentation (may fail due to external SSL cert issues - this is expected)
+poetry run sphinx-build docs docs/_build --builder html --fail-on-warning
+```
+
+### Runtime Requirements
+- **Python**: 3.9+ (excludes 3.9.7 due to Streamlit incompatibility)
+- **Poetry**: 2.1+ required for build system
+- **Virtual Environment**: Configured in-project (`.venv/` directory)
+
+## Project Layout and Architecture
+
+### Source Code Structure
+```
+src/nipanel/                 # Main package directory
+├── __init__.py             # Public API exports
+├── _streamlit_panel.py     # Core StreamlitPanel class
+├── _panel_client.py        # gRPC client for panel communication
+├── _panel_value_accessor.py # Value management for panels
+├── _streamlit_panel_initializer.py # Panel creation utilities
+├── _convert.py             # Type conversion utilities
+├── controls/               # Streamlit UI control components
+├── converters/             # Type conversion modules
+├── panel_refresh/          # Panel refresh functionality
+└── streamlit_refresh/      # Streamlit-specific refresh logic
+```
+
+### Configuration Files
+- **pyproject.toml**: Main project configuration, dependencies, tool settings
+- **poetry.toml**: Poetry configuration (sets `in-project = true` for venv)
+- **.github/workflows/**: Complete CI/CD pipeline
+
+### Test Structure
+```
+tests/
+├── unit/                   # Unit tests (primary test suite)
+├── integration/            # Integration tests
+├── acceptance/             # End-to-end acceptance tests
+├── utils/                  # Test utilities and fakes
+└── conftest.py            # Pytest configuration and fixtures
+```
+
+### Examples
+```
+examples/
+├── hello/                  # Basic panel example
+├── all_types/              # Demonstrates all supported data types
+├── simple_graph/           # Graph visualization example
+├── nidaqmx/               # Hardware integration examples
+└── performance_checker/    # Performance monitoring example
+```
+
+## CI/CD Pipeline
+
+The repository uses a comprehensive GitHub Actions pipeline:
+
+1. **check_nipanel.yml**: Runs on Windows, Ubuntu, macOS with Python 3.9, 3.13
+   - Linting with `poetry run nps lint`
+   - Type checking with `poetry run mypy`
+   - Security scanning with `poetry run bandit -c pyproject.toml -r src/nipanel`
+
+2. **run_unit_tests.yml**: Cross-platform testing (Windows, Ubuntu) with Python 3.9-3.13
+   - Unit tests: `poetry run pytest ./tests/unit -v --cov=nipanel --junitxml=test_results/nipanel-{os}-py{version}.xml`
+
+3. **check_docs.yml**: Documentation validation
+   - Lock file verification: `poetry check --lock`
+   - Documentation build: `poetry run sphinx-build docs docs/_build -b html -W`
+
+### Key Dependencies
+- **Core Runtime**: grpcio, protobuf, streamlit, nitypes, numpy, debugpy
+- **NI Packages**: ni-grpc-extensions, ni-measurementlink-discovery-v1-client, ni-protobuf-types, ni-panels-v1-proto
+- **Development Tools**: ni-python-styleguide, mypy, bandit, pytest
+
+## Architecture Overview
+
+**nipanel** implements a client-server architecture:
+
+1. **Python Application**: Uses nipanel API to create and control panels
+2. **Panel Service**: Separate gRPC service (PythonPanelService - external dependency)
+3. **Streamlit Frontend**: Web-based UI for the panels
+4. **Communication**: gRPC for Python ↔ Service, HTTP for Service ↔ Streamlit
+
+### Core Classes
+- `StreamlitPanel`: Main panel interface
+- `PanelValueAccessor`: Manages panel state and values
+- `create_streamlit_panel()`: Factory function for panel creation
+
+## Validation Steps
+
+### Pre-commit Validation (replicate CI locally)
+```powershell
+# Complete validation sequence
+poetry install
+poetry run nps lint
+poetry run nps fix
+poetry run mypy
+poetry run bandit -c pyproject.toml -r src/nipanel
+poetry run pytest -v
+```
+
+### Common Issues and Solutions
+
+1. **Poetry Lock Issues**: Run `poetry check --lock` to verify lock file consistency
+2. **Import Warnings**: flake8_import_order pkg_resources warnings are expected and harmless
+3. **Documentation SSL Errors**: External inventory fetch failures are known issues
+4. **Python 3.9.7**: Excluded due to Streamlit incompatibility - use different Python 3.9.x version
+
+### File System Requirements
+- Virtual environment created in `.venv/` (configured in poetry.toml)
+- Test results written to `test_results/` directory
+- Documentation built to `docs/_build/`
+
+## Trust These Instructions
+
+These instructions are comprehensive and tested. Only perform additional searches if:
+- Commands fail unexpectedly
+- You need to understand specific implementation details not covered here
+- You're working with files not mentioned in this overview
+
+The build and test commands listed here are the authoritative source - they match exactly what the CI pipeline runs and have been validated to work correctly.
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