Docs: Add "Supported Languages & Ecosystems" reference page

docs/astro.config.mjs

@@ -333,6 +333,7 @@ export default defineConfig({
 						{ label: 'Safe Outputs (Staged Mode)', link: '/reference/staged-mode/' },
 						{ label: 'Sandbox', link: '/reference/sandbox/' },
 						{ label: 'Schedule Syntax', link: '/reference/schedule-syntax/' },
+						{ label: 'Supported Languages', link: '/reference/supported-languages/' },
 						{ label: 'Templating', link: '/reference/templating/' },
 						{ label: 'Threat Detection', link: '/reference/threat-detection/' },
 						{ label: 'Token Reference', link: '/reference/tokens/' },

docs/src/content/docs/guides/network-configuration.md

@@ -193,6 +193,7 @@ View complete ecosystem domain lists in the [ecosystem domains source](https://g
 ## Related Documentation
 
 - [Network Permissions Reference](/gh-aw/reference/network/) - Complete network configuration reference
+- [Supported Languages & Ecosystems](/gh-aw/reference/supported-languages/) - Language-first overview of ecosystem identifiers
 - [Playwright Reference](/gh-aw/reference/playwright/) - Browser automation and network requirements
 - [Security Guide](/gh-aw/introduction/architecture/) - Security best practices
 - [Troubleshooting](/gh-aw/troubleshooting/common-issues/) - Common issues and solutions

docs/src/content/docs/reference/network.md

@@ -106,7 +106,7 @@ Mix ecosystem identifiers with specific domains for fine-grained control:
 | `playwright` | Playwright testing framework domains (see [Playwright Reference](/gh-aw/reference/playwright/)) |
 | `chrome` | Headless Chrome/Puppeteer browser testing (`*.google.com`, `*.googleapis.com`, `*.gvt1.com`) |
 
-Common identifiers: `python` (PyPI/pip), `node` (npm/yarn/pnpm), `containers` (Docker Hub/GHCR), `go` (proxy.golang.org). See the [Network Configuration Guide](/gh-aw/guides/network-configuration/) for complete domain lists.
+Common identifiers: `python` (PyPI/pip), `node` (npm/yarn/pnpm), `containers` (Docker Hub/GHCR), `go` (proxy.golang.org). See the [Network Configuration Guide](/gh-aw/guides/network-configuration/) for complete domain lists, or the [Supported Languages](/gh-aw/reference/supported-languages/) page for a language-first overview.
 
 ## Strict Mode Validation
 

docs/src/content/docs/reference/supported-languages.md

@@ -0,0 +1,88 @@
+---
+title: Supported Languages & Ecosystems
+description: Language ecosystem identifiers for configuring network access in agentic workflows
+sidebar:
+  order: 1350
+---
+
+Agentic workflows run inside an Ubuntu/Linux sandbox. Each programming language has a corresponding **ecosystem identifier** that grants the workflow access to that language's package registry and toolchain domains. Set these identifiers in the [`network.allowed`](/gh-aw/reference/network/) field of your workflow frontmatter.
+
+## Language Ecosystem Identifiers
+
+| Language | Ecosystem Identifier | Package Manager |
+|----------|---------------------|-----------------|
+| Python | `python` | pip, conda |
+| JavaScript / TypeScript | `node` | npm, yarn, pnpm |
+| Java | `java` | Maven, Gradle |
+| Go | `go` | Go modules |
+| Rust | `rust` | Cargo |
+| C# / .NET | `dotnet` | NuGet |
+| Ruby | `ruby` | Bundler, RubyGems |
+| PHP | `php` | Composer |
+| Swift | `swift` | SwiftPM (Linux only) |
+| Kotlin | `kotlin` + `java` | Gradle |
+| Dart | `dart` | pub |
+| C / C++ | `defaults` | System toolchain (gcc, cmake) |
+
+> [!NOTE]
+> Swift projects that depend on Apple-only frameworks (UIKit, AppKit, SwiftUI on macOS) are not supported — the sandbox runs Ubuntu Linux.
+
+## Infrastructure Ecosystems
+
+These identifiers are not language-specific but pair with any language workflow:
+
+| Identifier | Use for |
+|------------|---------|
+| `defaults` | Basic infrastructure: certificates, JSON schema, Ubuntu mirrors. This is the default when `network:` is not specified, and is recommended as the starting baseline for most workflows. |
+| `github` | GitHub domains (`github.com`, `raw.githubusercontent.com`, etc.) |
+| `containers` | Docker Hub, GitHub Container Registry, Quay, GCR |
+| `linux-distros` | Debian, Ubuntu, Alpine package repositories (`apt`, `apk`) |
+
+## Configuration Examples
+
+### Single language
+
+```aw wrap
+---
+network:
+  allowed:
+    - defaults
+    - python
+---
+```
+
+### JVM family (Java + Kotlin)
+
+```aw wrap
+---
+network:
+  allowed:
+    - defaults
+    - java
+    - kotlin
+---
+```
+
+### Multi-language
+
+```aw wrap
+---
+network:
+  allowed:
+    - defaults
+    - node
+    - python
+    - containers
+    - github
+---
+```
+
+## Less Common Languages
+
+Additional language ecosystems are available for less common languages including Elixir, Haskell, Julia, Perl, OCaml, Deno, and Terraform. See the [Ecosystem Identifiers table](/gh-aw/reference/network/#ecosystem-identifiers) in the Network Permissions reference for the most up-to-date list of supported identifiers.
+
+## Related Documentation
+
+- [Network Permissions](/gh-aw/reference/network/) — Network configuration reference and ecosystem identifiers table
+- [Network Configuration Guide](/gh-aw/guides/network-configuration/) — Practical patterns and troubleshooting
+- [Sandbox](/gh-aw/reference/sandbox/) — Sandbox environment details