Update setup instructions and links in documentation (#5)

Author: jovnc

docs/contributing/setup.md

@@ -7,44 +7,27 @@ nav_order: 1
 Both hands-on and exercises reside in the same repository: [`git-mastery/exercises`](https://github.com/git-mastery/exercises). So before you start to contributing, you should have these setup already:
 
 - Bash environment
-- Python 3.13
+- Python 3.13+
 - Github CLI [installed and authenticated](https://github.com/cli/cli#installation) for testing the download script
+- uv [installed](https://docs.astral.sh/uv/getting-started/installation/)
 
 ## Setup
 
 1. Fork the repository: <https://github.com/git-mastery/exercises>
 2. Clone the fork
 
-    ```bash
-    git clone https://github.com/<username>/exercises
-    ```
+   ```bash
+   git clone https://github.com/<username>/exercises
+   ```
 
-3. Setup a virtual environment
+3. Run the following command to set up virtual environment and install dependencies:
 
-    ```bash
-    python -m venv venv
-    ```
+   ```bash
+   uv sync
+   ```
 
-4. Activate the virtual environment
+4. Set up pre-commit hooks (for linting, formatting and type checking) using LeftHook
 
-    ```bash
-    source venv/bin/activate
-    ```
-
-    If you are using Windows, you should run the following instead: 
-
-    ```bash
-    source venv/Scripts/activate
-    ```
-
-5. Install all dependencies
-
-    ```bash
-    pip install -r requirements.txt
-    ```
-
-6. Install pre-commit hooks using LeftHook (installed as a dependency in `requirements.txt`)
-
-    ```bash
-    lefthook install
-    ```
+   ```bash
+   uv run lefthook install
+   ```

index.markdown

@@ -17,13 +17,13 @@ Git-Mastery is a Git education tool developed by the National University of Sing
 
 Before contributing to Git-Mastery, it would be good if you tried it out to get a sense of what students experience.
 
-To setup Git-Mastery, refer to [this setup guide](https://git-mastery.github.io/app) for your OS.
+To setup Git-Mastery, refer to [this setup guide](https://git-mastery.org/companion-app/index.html) for your OS.
 
-We recommend following along with [tour 1](https://nus-cs2103-ay2526s1.github.io/website/book/gitAndGithub/trail/recordingFolderHistory/index.html) and [tour 2](https://nus-cs2103-ay2526s1.github.io/website/book/gitAndGithub/trail/backingUpOnCloud/) of the NUS CS2103/T Git curriculum!
+We recommend following along with [tour 1](https://git-mastery.org/lessons/trail/recordingFolderHistory/) and [tour 2](https://git-mastery.org/lessons/trail/backingUpOnCloud/) of the Git-Mastery curriculum!
 
 ## Contributor's progression
 
-You are welcome to start contributing to Git-Mastery in any way you see fit! 
+You are welcome to start contributing to Git-Mastery in any way you see fit!
 
 However, if you are looking for a certain angle to start at, we recommend [contributing 1-2 hands-on](/developers/docs/contributing/hands-on) before diving into [contributing exercises](/developers/docs/contributing/exercise)!