feat: column lineage API, SQL tags, and PyO3 bindings

Cargo.toml

@@ -3,6 +3,8 @@ resolver = "2"
 members = [
     "crates/polyglot-sql",
     "crates/polyglot-sql-wasm",
+    "crates/polyglot-sql-python",
+    "crates/polyglot-sql-tags",
 ]
 exclude = [
     "examples/rust",

crates/polyglot-sql-python/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "polyglot-sql-python"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+description = "Python bindings for polyglot-sql — a high-performance SQL transpiler"
+
+[lib]
+name = "_polyglot_core"
+crate-type = ["cdylib"]
+
+[dependencies]
+polyglot-sql = { path = "../polyglot-sql" }
+polyglot-sql-tags = { path = "../polyglot-sql-tags" }
+pyo3 = { version = "0.23", features = ["extension-module"] }
+serde_json = "1.0"

crates/polyglot-sql-python/README.md

@@ -0,0 +1,28 @@
+# polyglot-sql (Python)
+
+High-performance SQL transpiler with a **sqlglot-compatible** Python API, powered by a Rust core.
+
+## Installation
+
+```bash
+pip install polyglot-sql
+```
+
+## Usage
+
+```python
+import polyglot
+
+# Transpile SQL between dialects
+result = polyglot.transpile(
+    "SELECT EPOCH_MS(1618088028295)",
+    read="duckdb",
+    write="hive"
+)
+
+# Parse SQL into an AST
+expr = polyglot.parse_one("SELECT id, name FROM users", read="postgres")
+
+# Generate SQL for a different dialect
+print(expr.sql(dialect="mysql"))
+```

crates/polyglot-sql-python/pyproject.toml

@@ -0,0 +1,30 @@
+[build-system]
+requires = ["maturin>=1.0,<2.0"]
+build-backend = "maturin"
+
+[project]
+name = "polyglot-sql"
+version = "0.1.4"
+description = "High-performance SQL transpiler with sqlglot-compatible Python API"
+readme = "README.md"
+license = { text = "MIT" }
+requires-python = ">=3.8"
+keywords = ["sql", "transpile", "dialect", "parser"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Rust",
+    "Topic :: Database",
+    "Topic :: Software Development :: Compilers",
+]
+
+[project.optional-dependencies]
+dev = ["pytest>=7.0"]
+
+[tool.maturin]
+features = ["pyo3/extension-module"]
+module-name = "polyglot._polyglot_core"
+python-source = "python"