docs: add contributing info

ARCHITECTURE.md → CONTRIBUTING.md

@@ -1,21 +1,55 @@
+# Contributing to Zebar
+
+Zebar uses the Tauri desktop framework and requires Node.js + Rust.
+
+Rust **nightly** and Node.js **version 20** are currently used.
+
+### Installing Rust
+
+[`rustup`](https://rustup.rs/) is the recommended way to set up the Rust toolchain.
+
+### Installing Node.js
+
+Install Node.js via the [official download](https://nodejs.org/en/download) or a version manager like NVM ([unix](https://github.com/nvm-sh/nvm#installing-and-updating), [windows](https://github.com/coreybutler/nvm-windows?tab=readme-ov-file#overview)), or [pnpm via its standalone script](https://pnpm.io/installation#using-a-standalone-script) and then switching version via `pnpm env use -g 20`.
+
+### Development
+
+To start the project in development mode:
+
+```shell
+# Install pnpm (package manager) if not already installed.
+npm i -g pnpm
+
+# Install dependencies.
+pnpm i
+
+# Start in development mode.
+pnpm dev
+```
+
+## Architecture
+
 Zebar is split into 3 packages:
 
 - `desktop` - a Tauri app which is a CLI that can spawn windows.
 - `client` - a SolidJS frontend which is spawned by Tauri on `zebar open <window_name>`.
 - `client-api` - business logic for communicating with Tauri.
 
-# How to create a new provider?
+### How to create a new provider?
 
 1. **Create a new config schema for your provider.**
+
    1. Add a schema for the config under [`packages/client-api/src/user-config/window/providers`](https://github.com/glzr-io/zebar/tree/main/packages/client-api/src/user-config/window/providers).
    2. Add the new provider type to the [`ProviderType`](https://github.com/glzr-io/zebar/blob/main/packages/client-api/src/user-config/window/provider-type.model.ts) enum.
    3. Add the schema to the [`ProviderConfigSchema`](https://github.com/glzr-io/zebar/blob/main/packages/client-api/src/user-config/window/provider-config.model.ts) array.
 
 2. **Add the client-side logic for the provider.** Most providers aren't client-side heavy, and simply subscribe to some variables sent from the Tauri backend (eg. [`create-ip-provider.ts`](https://github.com/glzr-io/zebar/tree/main/packages/client-api/src/providers/ip/create-ip-provider.ts)).
+
    1. Add a new provider under [`packages/client-api/src/providers`](https://github.com/glzr-io/zebar/tree/main/packages/client-api/src/providers).
    2. Add the provider to the switch statement in [`createProvider(...)`](https://github.com/glzr-io/zebar/blob/main/packages/client-api/src/providers/create-provider.ts#L28).
 
 3. **Add the backend logic for the provider.**
+
    1. Add the logic for the provider under [`packages/desktop/src/providers`](https://github.com/glzr-io/zebar/tree/main/packages/desktop/src/providers).
    2. Add the provider's config to the [`ProviderConfig`](https://github.com/glzr-io/zebar/blob/main/packages/desktop/src/providers/config.rs) enum.
    3. Add the provider's variables to the [`ProviderVariables`](https://github.com/glzr-io/zebar/blob/main/packages/desktop/src/providers/variables.rs) enum.

README.md

@@ -2,41 +2,16 @@
 
 Zebar is a way to create customizable and cross-platform taskbars, desktop widgets, and popups.
 
-## Contributing
-
-Zebar uses the Tauri desktop framework and requires Node.js + Rust.
-
-### Installing Rust
-
-[`rustup`](https://rustup.rs/) is the recommended way to set up the Rust toolchain. It can be installed via:
-
-```shell
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
-```
-
-### Installing Node.js
-
-Install Node.js via [NVM](https://github.com/nvm-sh/nvm#installing-and-updating) (recommended for easily switching between Node.js versions) or the [official download](https://nodejs.org/en/download).
-
-### Development
-
-To start the project in development mode:
-
-```shell
-# Install pnpm (package manager) if not already installed.
-npm i -g pnpm
-
-# Install dependencies.
-pnpm i
-
-# Start in development mode.
-pnpm dev
-```
+[How to contribute](https://github.com/glzr-io/zebar/blob/main/CONTRIBUTING.md)
 
 ## Providers
 
 ### Battery
 
+## Date
+
+https://moment.github.io/luxon/#/formatting?id=table-of-tokens
+
 ### Host
 
 - `hostname` -