docs: add installation snippet

Author: janbiasi

plugins/caffeinate/README.md

@@ -11,4 +11,10 @@ Prevent your system from sleeping during agentic workflows.
 
 ## Installation
 
-Copy the [content](https://unpkg.com/@opencode-plugins/caffeinate@1.0.0/dist/plugin.js) to `~/.config/opencode/plugin/caffeinate.js`
+Add the package to your plugins list in `~/.config/opencode/opencode.json`:
+
+```json
+{
+  "plugins": ["@opencode-plugins/caffeinate"]
+}
+```

plugins/env-protection/README.md

@@ -7,3 +7,13 @@
 | windows  | :white_check_mark: |
 
 Prevent opencode to read any `.env` file - this is taken 1:1 from [opencode docs](https://opencode.ai/docs/plugins/#env-protection).
+
+## Installation
+
+Add the package to your plugins list in `~/.config/opencode/opencode.json`:
+
+```json
+{
+  "plugins": ["@opencode-plugins/env-protection"]
+}
+```