add proto paths

comparisons/meta-version-managers.md

@@ -13,7 +13,7 @@ Note that systems like [Nix](https://nixos.org) and [Guix](https://guix.gnu.org)
 | [mise](https://github.com/jdxcode/mise) | 2,000+ | Rust | PATH | ✅ |
 | [Hermit](https://github.com/cashapp/hermit) | 500+ | Go,HCL | ❔ | ❌ |
 | [aqua](https://github.com/aquaproj/aqua) | 300+ | Go | ❔ | ❌ |
-| [proto](https://github.com/moonrepo/proto) | 163+ | Rust | ? | ❌ |
+| [proto](https://github.com/moonrepo/proto) | 445+ | Rust | ? | ❌ |
 | [Woof](https://github.com/version-manager/woof) | 21+ | Bash,jq | PATH | ✅ |
 
 ## Supported Interfaces
@@ -30,10 +30,20 @@ Note that systems like [Nix](https://nixos.org) and [Guix](https://guix.gnu.org)
 
 ## Custom
 
-## sdkman
+### sdkman
 
 - Uses `.sdkmanrc`
 
-## mise
+### mise
 
 - Uses `.mise.toml`
+
+### proto
+
+[It checks in order:](https://moonrepo.dev/docs/proto/detection)
+
+- CLI argument
+- `PROTO_*_VERSION` environment variable
+- `.prototools` (local)
+- version manager configs (e.g. `.nvmrc`) & manifest files (e.g. `package.json`)
+- `~/.proto/.prototools` (global)