Add stubs for the project documentation (#5135)

@ibraheemdev is going to do some work on these, I just sketched out some
parts to try to understand how things will fit together.

docs/guides/projects.md

@@ -1 +1,32 @@
-# Creating a project
+# Working on projects
+
+## Creating a new project
+
+```
+uv init
+```
+
+### Working on an existing project
+
+<!-- What makes a project compatible with uv commands? What are my alternatives? -->
+
+
+## Running commands
+
+```
+uv run
+```
+
+## Managing dependencies
+
+```
+uv add
+```
+
+```
+uv remove
+```
+
+## Next steps
+
+See the [projects concept](../projects.md) documentation for more details on projects.

docs/projects.md

@@ -0,0 +1,55 @@
+# Projects
+
+## Project metadata
+
+`pyproject.toml`
+
+```
+uv init
+```
+
+## Project environments
+
+`.venv`
+
+```
+uv sync
+```
+
+## Lock files
+
+```
+uv lock
+```
+
+## Adding dependencies
+
+```
+uv add
+```
+
+### Updating existing dependencies
+
+<!-- What happens when the same dependency is added multiple times? -->
+
+## Removing dependencies
+
+```
+uv remove
+```
+
+## Running commands
+
+```
+uv run
+```
+
+### Running commands with additional dependencies
+
+### Running scripts
+
+Scripts that declare inline metadata are automatically executed in environments isolated from the project. See the [scripts guide](./guides/scripts.md#declaring-script-dependencies) for more details.
+
+## Projects with many packages
+
+See the [workspaces](./preview/workspaces.md) documentation.

mkdocs.template.yml

@@ -75,9 +75,9 @@ nav:
       - Installing Python: guides/install-python.md
       - Running scripts: guides/scripts.md
       - Using tools: guides/tools.md
-      - Creating a project: guides/projects.md
+      - Working on projects: guides/projects.md
   - Concepts:
-      - Projects: preview/projects.md
+      - Projects: projects.md
       - Command-line tools: preview/tools.md
       - Python versions: python-versions.md
       - Workspaces: preview/workspaces.md