add prometheus webapp link to docs

Author: levno-710

doc/README.md

@@ -6,7 +6,9 @@ description: Prometheus is a Lua obfuscator written in pure Lua.
 
 Prometheus obfuscates Lua source code using AST transforms and a configurable pipeline.
 
-This documentation is for the current codebase in this repository and covers:
+Use the [Prometheus Webapp](https://prometheus-lua.github.io/Prometheus/) to quickly try out settings and test small snippets. For larger scripts and advanced workflows, use the CLI (`prometheus-lua` or `cli.lua`).
+
+This documentation covers:
 
 - CLI usage (`prometheus-lua` and `cli.lua`)
 - configuration and presets

doc/getting-started/quickstart-first-obfuscation.md

@@ -1,5 +1,7 @@
 # Quickstart: First Obfuscation
 
+You can quickly try Prometheus in the [Prometheus Webapp](https://prometheus-lua.github.io/Prometheus/). For large scripts or advanced use cases, prefer the CLI workflow below.
+
 Create a simple Lua file:
 
 ```lua