Add jj-review TUI plugin to global opencode config

modules/_opencode/tui.json

@@ -0,0 +1,4 @@
+{
+	"$schema": "https://opencode.ai/tui.json",
+	"plugin": ["./plugin/review.ts"]
+}

modules/ai-tools.nix

@@ -116,6 +116,7 @@ in {
 				recursive = true;
 			};
 			"opencode/AGENTS.md".source = ./_opencode/AGENTS.md;
+			"opencode/tui.json".source = ./_opencode/tui.json;
 		};
 	};
 }