docs: update install instructions for Forgejo

Formula/dsmview.rb

@@ -3,8 +3,8 @@ class Dsmview < Formula
 
   desc "TUI SSH monitor for Synology DSM 7.x"
   homepage "https://github.com/janvete/dsmview"
-  url "https://github.com/janvete/dsmview/archive/refs/tags/v0.3.0.tar.gz"
-  sha256 "aba20e5ffe9ef162ff2ff29ab91ad8601a4bd6815304ea1b7d1701aa975a104b"
+  url "https://github.com/janvete/dsmview/archive/refs/tags/v0.3.1.tar.gz"
+  sha256 "6f0fcda846ee254604b87e06f3eaf20f58cdb148573cc30cb0fc7f31e922d665"
   license "MIT"
   head "https://github.com/janvete/dsmview.git", branch: "main"
 

README.md

@@ -2,11 +2,31 @@
 
 TUI SSH monitor for Synology DSM 7.x — read-only dashboard inspired by `btop`.
 
-```
-brew tap janvete/tools
+## Installation
+
+### macOS (Homebrew)
+
+```bash
+brew tap janvete/tools https://git.janvete.com/seth/homebrew-tools.git
 brew install dsmview
 ```
 
+### Debian / Ubuntu (APT)
+
+```bash
+echo "deb [trusted=yes] https://git.janvete.com/seth/apt/raw/branch/main ./" | sudo tee /etc/apt/sources.list.d/janvete.list
+sudo apt update
+sudo apt install dsmview
+```
+
+### From source
+
+```bash
+git clone ssh://git@git-ssh.janvete.com:554/seth/dsmview.git
+cd dsmview
+pip install .
+```
+
 ## Usage
 
 ```