migrate CI to gitea

sw/default.nix

@@ -79,21 +79,21 @@ in
     builders = mkOption {
       type = types.submodule {
         options = {
-          githubRunner = {
-            enable = mkEnableOption "GitHub Actions self-hosted runner";
+          giteaRunner = {
+            enable = mkEnableOption "Gitea Actions self-hosted runner";
 
             url = mkOption {
               type = types.str;
-              description = "GitHub repository URL for the runner";
+              description = "Gitea instance URL for the runner";
             };
 
             tokenFile = mkOption {
               type = types.path;
-              default = "/var/lib/github-runner-token";
+              default = "/var/lib/gitea-runner-token";
               description = ''
-                Path to file containing GitHub PAT token.
-                Generate at: https://github.com/settings/tokens
-                The token must have repo access.
+                Path to file containing Gitea runner token.
+                Generate in Gitea repository settings under Actions > Runners.
+                The token must have runner registration access.
               '';
             };
 
@@ -103,28 +103,10 @@ in
               description = "Extra labels to identify this runner in workflows";
             };
 
-            user = mkOption {
-              type = types.str;
-              default = "engr-ugaif";
-              description = "User to run the runner as";
-            };
-
-            workDir = mkOption {
-              type = types.str;
-              default = "/var/lib/github-runner";
-              description = "Working directory for runner";
-            };
-
             name = mkOption {
               type = types.str;
-              default = "nixos-systems";
-              description = "Name of the GitHub runner service";
-            };
-
-            replace = mkOption {
-              type = types.bool;
-              default = false;
-              description = "Replace existing runner registration on start";
+              default = "athenix";
+              description = "Name of the Gitea runner service";
             };
           };
         };