feature: introduce GitHub actions for python and update pyproject.toml

.github/workflows/python.yml

@@ -0,0 +1,33 @@
+name: Python Code Style & Linting
+
+permissions:
+  contents: read
+
+on:
+  push:
+    branches: [ 'main' ]
+    paths:
+      - 'python/**'
+  pull_request:
+    branches: [ '*' ]
+    paths:
+      - 'python/**'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./python
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install Ruff
+      uses: astral-sh/ruff-action@v3
+
+    - name: Ruff Format
+      run: ruff format --check --config ./pyproject.toml .
+
+    - name: Ruff Lint
+      run: ruff check --config ./pyproject.toml .

python/pyproject.toml

@@ -1,7 +1,35 @@
 [project]
-name = "python"
+name = "valuecell"
 version = "0.1.0"
-description = "Add your description here"
+description = "ValueCell is a community-driven, multi-agent platform for financial applications."
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = []
+
+[project.optional-dependencies]
+dev = [
+    "ruff",
+    "pytest>=7.4.0",
+    "pytest-cov>=4.1.0",
+    "pytest-asyncio>=1.0.0",
+]
+
+[tool.ruff]
+line-length = 88
+indent-width = 4
+target-version = "py312"
+force-exclude = true
+exclude = [
+    "venv",
+    "build",
+    "dist",
+    "node_modules",
+    "site-packages",
+    "third_party",
+]
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+skip-magic-trailing-comma = false
+line-ending = "auto"