Add environment variable support for bots and scripts

Introduce the EnvironmentVariable flatbuffer table for passing custom
environment variables to bot and script processes. Add the
`environment` field to CustomBot and ScriptConfiguration.
Migrate dev setup to `uv`, replace the monolithic `pytest.py` with
structured tests, and update the serialization codegen to handle
optional vector fields.

Author: VirxEC

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rlbot_flatbuffers"
-version = "0.18.10"
+version = "0.18.11"
 edition = "2024"
 description = "A Python module implemented in Rust for serializing and deserializing RLBot's flatbuffers"
 repository = "https://github.com/RLBot/flatbuffers-python"

Cargo.toml

@@ -25,23 +25,28 @@ The crate used to generate Python binds (PyO3) supports all the way back to Pyth
 ### Dev setup
 
 - Ensure Python 3.10+ is installed
-- Create a virtual Python environment
-    - `python3 -m venv venv`
-- Activate the virtual environment
-    - Windows: `venv\Scripts\activate.bat`
-    - Linux: `source venv/bin/activate`
-- Install maturin
-    - `pip install maturin`
-- Build & install for testing
-    - `maturin develop --release`
-
-To use in another Python environment, like if testing [python-interface](https://github.com/RLBot/python-interface), you can build the wheel:
-
-- `maturin build --release`
+- Install [uv](https://docs.astral.sh/uv/) (if not already installed)
+    - `curl -LsSf https://astral.sh/uv/install.sh | sh`
+- Sync the Python environment (this builds the Rust extension)
+    - `uv sync`
+- If you've made changes to the Rust code and `uv sync` doesn't rebuild, force reinstall:
+    - `uv sync --reinstall-package rlbot-flatbuffers`
+
+To use in another Python environment, like if testing [python-interface](https://github.com/RLBot/python-interface), you can build a wheel:
+
+- `uv run maturin build --release`
 - (In another environment) `pip install path/to/file.whl`
 
 The exact path of the wheel will be printed by maturin, just copy+paste it.
 
+### Running tests
+
+Tests are written with [pytest](https://docs.pytest.org/) and live in the `tests/` directory. Run them with:
+
+```sh
+uv run pytest
+```
+
 ### Basic usage
 
 All classes and methods should have types hints readable by your IDE, removing the guesswork of common operations.

README.md

@@ -1,19 +1,29 @@
-[build-system]
-requires = ["maturin>=1.3,<2.0"]
-build-backend = "maturin"
-
 [project]
 name = "rlbot_flatbuffers"
 requires-python = ">=3.10"
 classifiers = [
-    "Programming Language :: Rust",
-    "Programming Language :: Python :: Implementation :: CPython",
-    "Programming Language :: Python :: Implementation :: PyPy",
+  "Programming Language :: Python :: Implementation :: CPython",
+  "Programming Language :: Python :: Implementation :: PyPy",
+  "Programming Language :: Rust",
+]
+dynamic = ["description", "readme", "urls", "version"]
+
+[dependency-groups]
+dev = [
+  "numpy>=2.2.6",
+  "pytest>=9.1.1",
 ]
-dynamic = ["version", "description", "urls", "readme"]
+
+[build-system]
+requires = ["maturin>=1.3,<2.0"]
+build-backend = "maturin"
 
 [tool.maturin]
 features = ["pyo3/extension-module", "pyo3/abi3-py310"]
 
+[tool.pytest.ini_options]
+minversion = "9.0"
+testpaths = ["tests"]
+
 [tool.ruff.lint]
 ignore = ["F403", "F405"]