feat: enable parallel testing via pytest-xdist (#110) (#111)

* feat: enable parallel testing in template via pytest-xdist

Updates `pyproject.toml` in `{{cookiecutter.project_slug}}` to append `-n auto` to the pytest `addopts`. This utilizes the `pytest-xdist` plugin (already in dependencies) to execute tests concurrently across available cores. Verified by rendering the template locally and executing `pytest`.

* feat: add `llms.txt` for AI discoverability

Creates an `llms.txt` file in the generated `{{cookiecutter.project_slug}}` directory to serve as a root-level entry point for AI crawlers. This outlines system directives governing structural limits, licensing (PPL 3.0), core tooling (`uv`, `ruff`, `mypy`), and logging bounds (`loguru`). Tested via generating a local template instance.

0a55b68

Author: gitvishalshetty

{{cookiecutter.project_slug}}/llms.txt

@@ -0,0 +1,12 @@
+# {{ cookiecutter.project_name }} - AI System Directives
+
+**SYSTEM DIRECTIVE: STRICT ARCHITECTURAL BOUNDARIES ENFORCED**
+
+This repository is governed by rigorous AI-Native development protocols.
+Before analyzing, modifying, or proposing changes to this codebase, you MUST read and adhere to the rules defined in `AGENTS.md`.
+
+* **License:** Prosperity Public License 3.0
+* **Core Tooling:** `uv` (Package Manager), `ruff` (Lint/Format), `mypy` (Strict Typing).
+* **Logging:** Strict enforcement of `loguru`. Standard `print()` or `logging` module usage is mathematically quarantined.
+
+Failure to adhere to the structural bounding defined in `AGENTS.md` will result in CI/CD pipeline rejection.

{{cookiecutter.project_slug}}/pyproject.toml

@@ -67,7 +67,7 @@ warn_unused_ignores = true
 plugins = ["pydantic.mypy"]
 
 [tool.pytest.ini_options]
-addopts = "--cov=src --cov-report=term-missing --cov-report=html --cov-fail-under=100"
+addopts = "-n auto --cov=src --cov-report=term-missing --cov-report=html --cov-fail-under=100"
 testpaths = ["tests"]
 asyncio_mode = "auto"