feat(forgejo): enable ssh server

systems/etna/forgejo.nix

@@ -1,44 +1,59 @@
 _: {
   cfTunnels."git.uku3lig.net" = "http://localhost:3000";
 
-  services.forgejo = {
-    enable = true;
+  services = {
+    forgejo = {
+      enable = true;
 
-    database = {
-      type = "postgres";
-      createDatabase = true;
-    };
-
-    settings = {
-      DEFAULT.APP_NAME = "uku's forge";
-
-      server = {
-        DISABLE_SSH = true;
-        ROOT_URL = "https://git.uku3lig.net";
+      database = {
+        type = "postgres";
+        createDatabase = true;
       };
 
-      service = {
-        ALLOW_ONLY_EXTERNAL_REGISTRATION = true;
-        # TODO enable turnstile once it gets fixed
-        # see codeberg:forgejo/forgejo#3832
-        ENABLE_CAPTCHA = true;
-      };
-
-      oauth2 = {
-        # providers are configured in the admin panel
-        ENABLED = true;
-      };
-
-      actions.ENABLED = false;
-
-      "ui.meta" = {
-        AUTHOR = "uku's forge";
-        DESCRIPTION = "the place where literally nothing gets done";
-      };
-
-      "repository.signing" = {
-        DEFAULT_TRUST_MODEL = "committer";
+      settings = {
+        DEFAULT.APP_NAME = "uku's forge";
+
+        server = {
+          ROOT_URL = "https://git.uku3lig.net";
+          START_SSH_SERVER = true;
+          BUILTIN_SSH_SERVER_USER = "git";
+          SSH_DOMAIN = "ssh.uku.moe";
+          SSH_LISTEN_PORT = 2222;
+        };
+
+        service = {
+          ALLOW_ONLY_EXTERNAL_REGISTRATION = true;
+          # TODO enable turnstile once it gets fixed
+          # see codeberg:forgejo/forgejo#3832
+          ENABLE_CAPTCHA = true;
+        };
+
+        oauth2 = {
+          # providers are configured in the admin panel
+          ENABLED = true;
+        };
+
+        actions.ENABLED = false;
+
+        "ui.meta" = {
+          AUTHOR = "uku's forge";
+          DESCRIPTION = "the place where literally nothing gets done";
+        };
+
+        "repository.signing" = {
+          DEFAULT_TRUST_MODEL = "committer";
+        };
       };
     };
+
+    frp.settings.proxies = [
+      {
+        name = "forgejo-ssh";
+        type = "tcp";
+        localIp = "127.0.0.1";
+        localPort = 2222;
+        remotePort = 22;
+      }
+    ];
   };
 }