feat: add Zed extension release artifact with WSL2 support

The Zed extension now detects Windows via current_platform() and
automatically uses `wsl streamd lsp` instead of `streamd lsp`,
enabling seamless LSP support when Zed runs on Windows with streamd
installed in WSL2.

A pre-built zip (extension.toml + extension.wasm) is now built as
`zed-extension-zip` and published to every release. The README gains
a step-by-step WSL2 installation guide.

.forgejo/workflows/release.yml

@@ -53,6 +53,10 @@ jobs:
         if: steps.version.outputs.SKIP != 'true'
         run: nix build .#streamd-windows -o result-windows
 
+      - name: Build Zed extension
+        if: steps.version.outputs.SKIP != 'true'
+        run: nix build .#zed-extension-zip -o result-zed-extension-zip
+
       - name: Prepare release artifacts
         if: steps.version.outputs.SKIP != 'true'
         run: |
@@ -60,6 +64,7 @@ jobs:
           cp result-deb release/streamd_${{ steps.version.outputs.VERSION }}_amd64.deb
           cp result-musl/bin/streamd release/streamd-${{ steps.version.outputs.VERSION }}-linux-x86_64
           cp result-windows/bin/streamd.exe release/streamd-${{ steps.version.outputs.VERSION }}-windows-x86_64.exe
+          cp result-zed-extension-zip release/streamd-zed-extension-${{ steps.version.outputs.VERSION }}.zip
 
       - name: Create release
         if: steps.version.outputs.SKIP != 'true'

README.md

@@ -153,6 +153,41 @@ Add to `~/.config/zed/settings.json`:
 
 The `"..."` keeps Zed's default Markdown servers (e.g. `marksman`) active alongside streamd.
 
+#### Zed Extension (WSL2)
+
+If you run Zed on Windows with streamd installed inside WSL2, use the pre-built Zed extension instead of the manual config above. The extension auto-detects Windows and routes LSP communication through WSL2.
+
+**1. Install streamd in WSL2** (e.g. via the `.deb` package):
+
+```bash
+wget https://git.konstantinfickel.de/kfickel/streamd/releases/download/vX.Y.Z/streamd_X.Y.Z_amd64.deb
+sudo dpkg -i streamd_X.Y.Z_amd64.deb
+```
+
+**2. Download the extension** from the same release page:
+
+```
+streamd-zed-extension-X.Y.Z.zip
+```
+
+**3. Extract the zip** to a permanent folder on your Windows machine, e.g.:
+
+```
+C:\Users\<you>\zed-extensions\streamd-zed-extension\
+```
+
+The folder must contain `extension.toml` and `extension.wasm`.
+
+**4. Install the extension in Zed** via the command palette (`Ctrl+Shift+P`):
+
+```
+zed: install dev extension
+```
+
+Point Zed to the extracted folder.
+
+**5. Verify** by opening a Markdown file inside a directory that contains `.streamd.toml` — `@` completions and diagnostics should become active.
+
 ### Neovim (nvim-lspconfig)
 
 **1. Register the server** — add to your Neovim config (e.g. `~/.config/nvim/init.lua` or a plugin file):

flake.nix

@@ -141,6 +141,36 @@
           };
         };
 
+      mkGitHooksDev =
+        system:
+        let
+          pkgs = mkPkgs system;
+          toolchain = pkgs.rust-bin.stable.latest.default;
+        in
+        git-hooks.lib.${system}.run {
+          src = ./.;
+          hooks = {
+            rustfmt = {
+              enable = true;
+              package = toolchain;
+            };
+            clippy = {
+              enable = true;
+              package = toolchain;
+              settings.denyWarnings = true;
+            };
+            cargo-test = {
+              enable = true;
+              name = "cargo test";
+              entry = "${toolchain}/bin/cargo test";
+              pass_filenames = false;
+              language = "system";
+              files = "\\.(rs|toml)$";
+            };
+            commitizen.enable = true;
+          };
+        };
+
       mkMuslCraneLib =
         system:
         let
@@ -199,6 +229,21 @@
         in
         craneLib.buildPackage (commonArgs // { inherit cargoArtifacts; });
 
+      mkZedExtensionZip =
+        system:
+        let
+          pkgs = mkPkgs system;
+          zed-extension = mkZedExtension system;
+        in
+        pkgs.runCommand "streamd-zed-extension-${version}.zip" {
+          nativeBuildInputs = [ pkgs.zip ];
+        } ''
+          mkdir -p streamd-zed-extension
+          cp ${zed-extension}/extension.toml streamd-zed-extension/
+          cp ${zed-extension}/extension.wasm streamd-zed-extension/
+          zip -r $out streamd-zed-extension
+        '';
+
       mkStreamdDeb =
         system:
         let
@@ -250,9 +295,10 @@
           streamd-deb = mkStreamdDeb system;
           streamd-windows = mkStreamdWindows system;
           zed-extension = mkZedExtension system;
+          zed-extension-zip = mkZedExtensionZip system;
         in
         {
-          inherit streamd streamd-musl streamd-deb streamd-windows zed-extension;
+          inherit streamd streamd-musl streamd-deb streamd-windows zed-extension zed-extension-zip;
           default = streamd;
         }
       );
@@ -339,7 +385,7 @@
             ];
 
             shellHook = ''
-              ${(mkGitHooksCheck system).shellHook}
+              ${(mkGitHooksDev system).shellHook}
             '';
           };
         }

zed-extension/src/lib.rs

@@ -1,4 +1,4 @@
-use zed_extension_api::{self as zed, Command, LanguageServerId, Result, Worktree};
+use zed_extension_api::{self as zed, Command, LanguageServerId, Os, Result, Worktree, current_platform};
 
 struct StreamdExtension;
 
@@ -12,6 +12,14 @@ impl zed::Extension for StreamdExtension {
         _language_server_id: &LanguageServerId,
         _worktree: &Worktree,
     ) -> Result<Command> {
+        let (os, _) = current_platform();
+        if os == Os::Windows {
+            Ok(Command {
+                command: "wsl".into(),
+                args: vec!["streamd".into(), "lsp".into()],
+                env: vec![],
+            })
+        } else {
             Ok(Command {
                 command: "streamd".into(),
                 args: vec!["lsp".into()],
@@ -19,5 +27,6 @@ impl zed::Extension for StreamdExtension {
             })
         }
     }
+}
 
 zed::register_extension!(StreamdExtension);