hive-forge: grant the swarm-controller token write:admin for CreateForgeUser

nix/host-modules/hive-forge/default.nix

@@ -1092,10 +1092,22 @@ in
               # re-mint instead of being silently masked by a stamp that
               # outlived what it claims exists.
               if [ ! -s "$token_path" ]; then
+                # `write:admin` added for `swarm-controller::forge::Client::
+                # ensure_agent_user` (the `CreateForgeUser` jobq node) —
+                # Forgejo's `admin_create_user` HTTP endpoint refused every
+                # call with "token does not have at least one of required
+                # scope(s): [write:admin]" without it, an already-deployed
+                # swarm hitting this the moment that node shipped. A host
+                # whose token was minted before this scope was added won't
+                # pick it up automatically — the `[ ! -s "$token_path" ]`
+                # guard above only mints when the file is absent, by design
+                # (see its own comment) — so an existing deployment needs
+                # its token file deleted to force a re-mint with the new
+                # scope.
                 out=$(forgejo admin user generate-access-token \
                   --username ${lib.escapeShellArg swarmControllerForgeUser} \
                   --token-name swarm-controller-boot \
-                  --scopes "write:repository,write:organization,write:issue,read:user")
+                  --scopes "write:repository,write:organization,write:issue,read:user,write:admin")
                 token=$(printf '%s' "$out" | grep -oE '[0-9a-f]{32,}' | head -n1)
                 if [ -z "$token" ]; then
                   echo "no token-shaped word in forgejo's generate-access-token output" >&2