chore: setup project infrastructure and configuration

.env.example

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+# Groq API Key (required)
+GROQ_API_KEY=your_groq_api_key_here
+
+# Wolfram Alpha App ID (required for Wolfram tool)
+WOLFRAM_ALPHA_APP_ID=your_wolfram_alpha_app_id_here
+
+# LangSmith Tracing (optional but recommended)
+LANGSMITH_API_KEY=your_langsmith_api_key_here
+LANGSMITH_PROJECT=algebra-chatbot
+LANGSMITH_TRACING=true

.gitignore

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+# === System & IDE ===
+.DS_Store
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# === Environment & Secrets ===
+.env
+.env.*
+!.env.example
+venv/
+.venv/
+env/
+.Python
+
+# === Python ===
+__pycache__/
+*.py[oc]
+build/
+dist/
+wheels/
+*.egg-info/
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# === Database & Data ===
+*.db
+*.sqlite
+*.sqlite3
+data/
+!data/.gitkeep
+# Exclude model weights or large files
+*.pth
+*.pt
+*.bin
+
+# === Logs ===
+*.log
+logs/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# === Frontend (Node.js/React) ===
+node_modules/
+frontend/node_modules/
+frontend/dist/
+frontend/build/
+frontend/.eslintcache
+frontend/coverage/
+
+# === Testing & Quality Assurance ===
+# Pytest
+.pytest_cache/
+.test_caches/
+.wolfram_cache/
+.test_wolfram_*/
+.test_cache_*/
+.cache/
+.session_memory/
+
+# Coverage
+.coverage
+.coverage.*
+htmlcov/
+coverage.xml
+*.cover
+
+# Test Results
+# Test Results
+backend/tests/debug_*.py
+backend/tests/set_memory_*.py
+test_results.txt
+test-reports/
+junit/
+
+# some locals file
+note.md

.python-version

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+3.11

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install Node.js for frontend build
+RUN apt-get update && apt-get install -y curl && \
+    curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get install -y nodejs && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Install uv
+RUN pip install uv
+
+# Copy Python dependencies
+COPY pyproject.toml uv.lock* ./
+RUN uv sync --frozen || uv sync
+
+# Copy frontend and build
+COPY frontend/ ./frontend/
+WORKDIR /app/frontend
+RUN npm ci && npm run build
+
+# Copy backend
+WORKDIR /app
+COPY backend/ ./backend/
+
+# Create data directory for SQLite
+RUN mkdir -p /data
+
+# Set environment variables
+ENV DATABASE_URL=sqlite+aiosqlite:///data/algebra_chat.db
+ENV PYTHONPATH=/app
+
+# Expose port
+EXPOSE 7860
+
+# Run the application
+CMD ["uv", "run", "uvicorn", "backend.app:app", "--host", "0.0.0.0", "--port", "7860"]

pyproject.toml

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+[project]
+name = "calculus-chatbot"
+version = "0.1.0"
+description = "Simple agent for calculus problem solving"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+    "aiosqlite>=0.22.1",
+    "cvxpy>=1.7.5",
+    "diskcache>=5.6.3",
+    "fastapi>=0.127.1",
+    "greenlet>=3.3.0",
+    "httpx>=0.28.1",
+    "langchain>=1.2.0",
+    "langchain-groq>=1.1.1",
+    "langgraph>=1.0.5",
+    "langsmith>=0.1.0",
+    "matplotlib>=3.10.8",
+    "mpmath>=1.3.0",
+    "networkx>=3.6.1",
+    "numexpr>=2.14.1",
+    "numpy>=2.4.0",
+    "pandas>=2.3.3",
+    "pillow>=12.0.0",
+    "pint>=0.25.2",
+    "plotly>=6.5.0",
+    "polars>=1.36.1",
+    "pulp>=3.3.0",
+    "python-dotenv>=1.2.1",
+    "python-multipart>=0.0.21",
+    "pywavelets>=1.9.0",
+    "scikit-learn>=1.8.0",
+    "scipy>=1.16.3",
+    "seaborn>=0.13.2",
+    "sqlalchemy>=2.0.45",
+    "statsmodels>=0.14.6",
+    "sympy>=1.14.0",
+    "uncertainties>=3.2.3",
+    "uvicorn>=0.40.0",
+]
+
+[dependency-groups]
+dev = [
+    "httpx>=0.28.1",
+    "pytest>=9.0.2",
+    "pytest-asyncio>=1.3.0",
+]

pytest.ini

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+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["backend/tests"]
+python_files = "test_*.py"
+python_classes = "Test*"
+python_functions = "test_*"
+asyncio_default_fixture_loop_scope = "function"