Nomad changes

packages/java/checkstyle.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+    "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+    "https://checkstyle.org/dtds/configuration_1_3.dtd">
+
+<!-- Checkstyle handles correctness checks only. Spotless handles all formatting. -->
+<module name="Checker">
+    <property name="charset" value="UTF-8"/>
+    <property name="severity" value="error"/>
+    <property name="fileExtensions" value="java"/>
+
+    <module name="SuppressionFilter">
+        <property name="file" value="checkstyle-suppressions.xml"/>
+        <property name="optional" value="true"/>
+    </module>
+
+    <module name="LineLength">
+        <!-- 200 accommodates the alef-emitted DefaultClient.java FFM call shims:
+             the codegen chains arena allocation, MemorySegment marshalling, and
+             error-result handling onto single lines that don't reflow cleanly.
+             Tests and hand-written code stay well below this; the limit only
+             gives the generator headroom. -->
+        <property name="max" value="200"/>
+        <property name="ignorePattern" value="^package.*|^import.*|a]href|href|http://|https://|ftp://"/>
+    </module>
+
+    <module name="TreeWalker">
+        <!-- Naming Conventions (relaxed for FFI snake_case from Rust) -->
+        <module name="ConstantName">
+            <property name="format" value="^([A-Z][A-Z0-9]*(_[A-Z0-9]+)*|[a-z][a-zA-Z0-9_]*)$"/>
+        </module>
+        <module name="PackageName"/>
+        <module name="TypeName"/>
+
+        <!-- Modifier Checks -->
+        <module name="ModifierOrder"/>
+        <module name="RedundantModifier"/>
+
+        <!-- Imports -->
+        <module name="UnusedImports"/>
+
+        <!-- Coding -->
+        <module name="EmptyStatement"/>
+        <module name="EqualsHashCode"/>
+        <module name="SimplifyBooleanExpression"/>
+        <module name="SimplifyBooleanReturn"/>
+
+        <!-- Size Violations -->
+        <module name="MethodLength">
+            <property name="max" value="150"/>
+        </module>
+
+        <!-- Misc -->
+        <module name="ArrayTypeStyle"/>
+        <module name="UpperEll"/>
+    </module>
+</module>