feat: add zed extension

flake.nix

@@ -89,6 +89,41 @@
           }
         );
 
+      mkZedExtension =
+        system:
+        let
+          pkgs = mkPkgs system;
+          toolchain = pkgs.rust-bin.stable.latest.default.override {
+            targets = [ "wasm32-wasip1" ];
+          };
+          craneLib = (crane.mkLib pkgs).overrideToolchain toolchain;
+          extensionSrc = ./zed-extension;
+          vendoredDeps = craneLib.vendorCargoDeps { src = extensionSrc; };
+        in
+        pkgs.stdenv.mkDerivation {
+          pname = "streamd-zed-extension";
+          version = "0.0.1";
+          src = extensionSrc;
+
+          nativeBuildInputs = [
+            toolchain
+            pkgs.cargo-component
+          ];
+
+          buildPhase = ''
+            export HOME=$TMPDIR
+            mkdir -p .cargo
+            cp ${vendoredDeps}/config.toml .cargo/config.toml
+            cargo component build --release --offline
+          '';
+
+          installPhase = ''
+            mkdir -p $out
+            cp extension.toml $out/
+            cp target/wasm32-wasip1/release/streamd_zed.wasm $out/extension.wasm
+          '';
+        };
+
       mkGitHooksCheck =
         system:
         let
@@ -214,9 +249,10 @@
           streamd-musl = mkStreamdMusl system;
           streamd-deb = mkStreamdDeb system;
           streamd-windows = mkStreamdWindows system;
+          zed-extension = mkZedExtension system;
         in
         {
-          inherit streamd streamd-musl streamd-deb streamd-windows;
+          inherit streamd streamd-musl streamd-deb streamd-windows zed-extension;
           default = streamd;
         }
       );