feat: add source control identity management

modules/hosts/orion/default.nix

@@ -42,7 +42,8 @@ in
       };
 
       environment.systemPackages = [
-      ] ++ lib.optional (terminalPackage != null && lib.elem "terminfo" terminalPackage.outputs) (
+      ]
+      ++ lib.optional (terminalPackage != null && lib.elem "terminfo" terminalPackage.outputs) (
         lib.getOutput "terminfo" terminalPackage
       );
     };

modules/hosts/polaris/default.nix

@@ -29,6 +29,15 @@ in
       mouse.accelSpeed = 0.4;
     };
 
+    sourceControl.users = {
+      kiri.personal.publicKey = "";
+
+      ergon = {
+        personal.publicKey = "";
+        work.publicKey = "";
+      };
+    };
+
     users = {
       inherit (metaLib.users)
         ergon

modules/hosts/zenith/default.nix

@@ -30,6 +30,15 @@ in
       mouse.accelSpeed = 0.4;
     };
 
+    sourceControl.users = {
+      kiri.personal.publicKey = "";
+
+      ergon = {
+        personal.publicKey = "";
+        work.publicKey = "";
+      };
+    };
+
     users = {
       inherit (metaLib.users)
         ergon