Add Windows directive model

Author: mearvk

src/windows/WindowsDirective.java

@@ -0,0 +1,18 @@
+package windows;
+
+/** Explicit policy controlling whether and how a Windows operation may run. */
+public record WindowsDirective(
+        String name,
+        boolean allowsExecution,
+        boolean allowNetwork,
+        boolean allowWrite,
+        long timeoutMillis) {
+    public WindowsDirective {
+        if (name == null || name.isBlank()) throw new IllegalArgumentException("name is required");
+        if (timeoutMillis < 0) throw new IllegalArgumentException("timeoutMillis must be non-negative");
+    }
+
+    public static WindowsDirective standard(String name) {
+        return new WindowsDirective(name, true, false, false, 30_000);
+    }
+}