feat: add uv plugin to marketplace

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

plugins/uv/skills/uv/SKILL.md

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+---
+name: uv
+description: "Use `uv` instead of pip/python/venv. Run scripts with `uv run script.py`, add deps with `uv add`, use inline script metadata for standalone scripts."
+---
+
+## Quick Reference
+
+```bash
+uv run script.py                   # Run a script
+uv run --with requests script.py   # Run with ad-hoc dependency
+uv run python -m ast foo.py >/dev/null  # Verify syntax without writing __pycache__
+uv add requests                    # Add dependency to project
+uv init --script foo.py            # Create script with inline metadata
+```
+
+## Inline Script Dependencies
+
+```python
+# /// script
+# requires-python = ">=3.12"
+# dependencies = ["requests"]
+# ///
+```
+
+See [scripts.md](scripts.md) for full details on running scripts, locking, and reproducibility.
+
+## Build Backend
+
+Use `uv_build` for pure Python packages:
+
+```toml
+[build-system]
+requires = ["uv_build>=0.9.28,<0.10.0"]
+build-backend = "uv_build"
+```
+
+See [build.md](build.md) for project structure, namespaces, and file inclusion.

plugins/uv/skills/uv/build.md

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+# uv Build Backend
+
+Use `uv_build` for pure Python packages. For extension modules, use `hatchling` instead.
+
+## pyproject.toml
+
+```toml
+[project]
+name = "my-package"
+version = "0.1.0"
+requires-python = ">=3.12"
+dependencies = []
+
+[build-system]
+requires = ["uv_build>=0.9.28,<0.10.0"]
+build-backend = "uv_build"
+```
+
+## Project Structure
+
+Default layout uses `src/<package_name>/__init__.py`:
+
+```
+pyproject.toml
+src/
+└── my_package/
+    └── __init__.py
+```
+
+Package name is normalized: `Foo-Bar` → `foo_bar`.
+
+### Custom Module Location
+
+```toml
+[tool.uv.build-backend]
+module-name = "mymodule"
+module-root = ""  # Use project root instead of src/
+```
+
+### Namespace Packages
+
+For `foo.bar` namespace:
+
+```
+src/foo/bar/__init__.py  # No __init__.py in foo/
+```
+
+```toml
+[tool.uv.build-backend]
+module-name = "foo.bar"
+```
+
+## File Inclusion/Exclusion
+
+Excludes `__pycache__`, `*.pyc`, `*.pyo` by default.
+
+```toml
+[tool.uv.build-backend]
+source-include = ["assets/**"]
+source-exclude = ["/dist", "tests/**"]
+```
+
+- Includes are anchored (`pyproject.toml` = only root)
+- Excludes are not anchored (`__pycache__` = all dirs named that)
+- Use `/prefix` to anchor excludes

plugins/uv/skills/uv/scripts.md

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+# Running Scripts with uv
+
+## Basic Usage
+
+```bash
+uv run script.py                   # Run a script
+uv run script.py arg1 arg2         # With arguments
+uv run --python 3.10 script.py     # Specific Python version
+echo 'print("hi")' | uv run -      # From stdin
+```
+
+In a project directory, use `--no-project` to skip installing the project:
+
+```bash
+uv run --no-project script.py
+```
+
+## Syntax Verification (No `__pycache__`)
+
+Use the AST parser instead of `python -m py_compile`:
+
+```bash
+uv run python -m ast script.py >/dev/null
+```
+
+## Ad-hoc Dependencies
+
+```bash
+uv run --with requests script.py
+uv run --with 'requests>2,<3' script.py
+uv run --with requests --with rich script.py
+```
+
+## Inline Script Metadata (Recommended)
+
+Declare dependencies directly in the script:
+
+```python
+# /// script
+# requires-python = ">=3.12"
+# dependencies = [
+#   "requests<3",
+#   "rich",
+# ]
+# ///
+
+import requests
+from rich import print
+```
+
+Then just: `uv run script.py`
+
+### Managing Dependencies
+
+```bash
+uv init --script example.py --python 3.12   # Create script with metadata
+uv add --script example.py requests rich    # Add dependencies
+```
+
+### Alternative Index
+
+```bash
+uv add --index "https://example.com/simple" --script example.py requests
+```
+
+Adds to metadata:
+
+```python
+# [[tool.uv.index]]
+# url = "https://example.com/simple"
+```
+
+## Locking Dependencies
+
+```bash
+uv lock --script example.py  # Creates example.py.lock
+```
+
+## Reproducibility
+
+Pin resolution date:
+
+```python
+# /// script
+# dependencies = ["requests"]
+# [tool.uv]
+# exclude-newer = "2023-10-16T00:00:00Z"
+# ///
+```
+
+## Executable Scripts (Shebang)
+
+```python
+#!/usr/bin/env -S uv run --script
+# /// script
+# dependencies = ["httpx"]
+# ///
+
+import httpx
+print(httpx.get("https://example.com"))
+```
+
+```bash
+chmod +x myscript
+./myscript
+```