docs(readme): Add Installation section with ZIP download and WP-CLI command

Two clearly-labeled install methods at the top of the README so
users know how to get the plugin without scrolling:
  - WordPress Admin GUI: 3-step ZIP upload
  - WP-CLI one-liner with --activate flag

Both link directly to the v1.0.0 release ZIP on Gitea.

README.md

@@ -60,31 +60,31 @@ Transform your WordPress site into a complete OAuth2 provider:
 
 ---
 
-## 📋 Installation
+## 📦 Installation
+
+**Latest release:** [v1.0.0](https://git.supported.systems/tigerstyle/tigerstyle-scent/releases/tag/v1.0.0) · [All releases](https://git.supported.systems/tigerstyle/tigerstyle-scent/releases)
 
 ### Prerequisites
-- WordPress 5.0 or higher
-- PHP 7.4 or higher  
-- MySQL 5.7 or higher
-- HTTPS enabled (recommended for production)
+- WordPress 5.0+
+- PHP 7.4+
+- MySQL 5.7+
+- HTTPS strongly recommended (required for production OAuth2 flows)
 
-### Quick Setup
+### Via WordPress Admin (GUI)
+
+1. Download [tigerstyle-scent-1.0.0.zip](https://git.supported.systems/tigerstyle/tigerstyle-scent/releases/download/v1.0.0/tigerstyle-scent-1.0.0.zip)
+2. In WordPress admin: **Plugins → Add New → Upload Plugin**, pick the ZIP
+3. Click **Activate Plugin** — settings appear under **TigerStyle Scent** in the sidebar
+4. Configure your territory: navigate to **TigerStyle Scent → Scent Profiles → Add New**
+
+### Via WP-CLI (terminal)
 
-1. **Clone the repository:**
 ```bash
-   git clone https://github.com/tigerstyle/scent.git wp-content/plugins/tigerstyle-scent
+wp plugin install \
+  https://git.supported.systems/tigerstyle/tigerstyle-scent/releases/download/v1.0.0/tigerstyle-scent-1.0.0.zip \
+  --activate
 ```
 
-2. **Activate the plugin:**
-   - Go to WordPress Admin → Plugins
-   - Find "🐯 TigerStyle Scent" 
-   - Click "Activate"
-
-3. **Configure your territory:**
-   - Navigate to **TigerStyle Scent** in admin menu
-   - Set your territory preferences
-   - Create your first scent profile (OAuth2 client)
-
 ---
 
 ## 🎯 Quick Start Guide