diff --git a/build.properties b/build.properties
new file mode 100644
index 0000000..180cd4b
--- /dev/null
+++ b/build.properties
@@ -0,0 +1,11 @@
+src.dir=src/main/java
+res.dir=src/main/resources
+web.dir=src/main/webapp
+test.dir=src/test/java
+build.dir=build
+dist.dir=dist
+lib.dir=lib
+war.name=jsf.war
+
+history.diff.file=history.sh
+history.script=history.diff
\ No newline at end of file
diff --git a/build.xml b/build.xml
index 4307a6e..bf51090 100644
--- a/build.xml
+++ b/build.xml
@@ -1,33 +1,21 @@
 <project name="jsf" default="build" basedir=".">
-  <!-- Конфигурация -->
-  <property name="src.dir" value="src/main/java"/>
-  <property name="res.dir" value="src/main/resources"/>
-  <property name="web.dir" value="src/main/webapp"/>
-  <property name="test.dir" value="src/test/java"/>
-  <property name="build.dir" value="build"/>
-  <property name="dist.dir" value="dist"/>
-  <property name="lib.dir" value="lib"/>
-  <property name="war.name" value="jsf.war"/>
+  <property file="build.properties"/>
 
-  <taskdef resource="net/sf/antcontrib/antlib.xml">
-    <classpath>
-      <pathelement location="lib/ant-contrib-1.0b3.jar"/>
-    </classpath>
-  </taskdef>
+  <path id="graal.classpath">
+    <pathelement location="lib/js-scriptengine-23.1.2.jar" />
+    <pathelement location="lib/js-22.3.1.jar" />
+  </path>
 
-  <!-- Подготовка -->
   <target name="prepare">
     <mkdir dir="${build.dir}"/>
     <mkdir dir="${dist.dir}"/>
   </target>
 
-  <!-- Очистка -->
   <target name="clean">
     <delete dir="${build.dir}"/>
     <delete dir="${dist.dir}"/>
   </target>
 
-  <!-- Компиляция -->
   <target name="compile" depends="prepare">
     <javac srcdir="${src.dir}" destdir="${build.dir}" includeantruntime="false" source="17" target="17">
       <classpath>
@@ -39,9 +27,8 @@
     </copy>
   </target>
 
-  <!-- Упаковка в WAR -->
   <target name="build" depends="compile">
-    <war destfile="${dist.dir}/${war.name}" webxml="${web.dir}/WEB-INF/web.xml">
+    <war destfile="${dist.dir}/${war.name}" webxml="${web.dir}/WEB-INF/web.xml" manifest="src/main/resources/META-INF/MANIFEST.MF">
       <fileset dir="${web.dir}">
         <exclude name="WEB-INF/web.xml"/>
       </fileset>
@@ -60,7 +47,6 @@
     </javac>
   </target>
 
-  <!-- Тесты -->
   <target name="test" depends="compile-tests">
     <mkdir dir="test-reports"/>
     <junit printsummary="yes" haltonfailure="yes" fork="true">
@@ -77,110 +63,17 @@
     </junit>
   </target>
 
-  <!-- Валидация XML -->
   <target name="xml">
-    <xmlvalidate lenient="no" failonerror="yes">
-      <fileset dir="." includes="**/*.xml"/>
+    <xmlvalidate lenient="true" failonerror="yes">
+      <fileset dir="." includes="**/*.xml" />
     </xmlvalidate>
   </target>
 
-  <!-- История -->
   <target name="history">
-    <condition property="git.present">
-      <available file=".git" type="dir"/>
-    </condition>
-    <fail message="Git is required." unless="git.present"/>
-
-    <echo message="🔁 Attempting history recovery..."/>
-
-    <exec executable="git" output="revs.txt" failonerror="true">
-      <arg value="rev-list"/>
-      <arg value="HEAD"/>
+    <exec executable="bash">
+      <env key="DIFF_FILE" value="${history.diff.file}"/>
+      <arg value="${history.script}"/>
     </exec>
-
-    <loadfile property="rev.lines" srcFile="revs.txt"/>
-
-    <property name="last.good" value=""/>
-    <property name="next.bad" value=""/>
-
-    <foreach list="${rev.lines}" target="try-revision" param="rev"/>
-
-    <fail message="🛑 No working revision found!" unless="last.good"/>
-
-    <echo message="✅ Working revision: ${last.good}"/>
-    <echo message="📄 Diffing from ${next.bad} to ${last.good}"/>
-
-    <exec executable="git" failonerror="false">
-      <arg value="diff"/>
-      <arg value="${next.bad}"/>
-      <arg value="${last.good}"/>
-      <redirector output="diff.patch"/>
-    </exec>
-
-    <echo message="📝 Diff saved to diff.patch"/>
   </target>
 
-  <target name="try-revision" unless="last.good">
-    <echo message="⏪ Trying revision: ${rev}"/>
-    <exec executable="git" failonerror="false">
-      <arg value="checkout"/>
-      <arg value="${rev}"/>
-    </exec>
-
-    <property name="compile.successful" value="false"/>
-    <trycatch>
-      <try>
-        <antcall target="clean"/>
-        <antcall target="compile"/>
-        <property name="compile.successful" value="true"/>
-      </try>
-      <catch>
-        <echo message="❌ Failed to compile at ${rev}"/>
-      </catch>
-    </trycatch>
-
-    <if>
-      <equals arg1="${compile.successful}" arg2="true"/>
-      <then>
-        <echo message="✅ Successfully compiled ${rev}"/>
-        <property name="last.good" value="${rev}"/>
-        <echo message="🛑 Breaking loop"/>
-        <property name="break.loop" value="true"/>
-      </then>
-      <else>
-        <property name="next.bad" value="${rev}"/>
-      </else>
-    </if>
-  </target>
-
-
-  <target name="try-compile" unless="found.good">
-    <property name="current.rev" value="@{rev}"/>
-    <exec executable="git" failonerror="true">
-      <arg value="checkout"/>
-      <arg value="${current.rev}"/>
-    </exec>
-    <trycatch property="compile.success">
-      <try>
-        <antcall target="clean"/>
-        <antcall target="compile"/>
-      </try>
-      <catch>
-        <echo message="❌ Failed to compile at ${current.rev}"/>
-      </catch>
-    </trycatch>
-    <condition property="compile.success">
-      <available file="${build.dir}"/>
-    </condition>
-    <if>
-      <isset property="compile.success"/>
-      <then>
-        <property name="last.good" value="${current.rev}"/>
-        <property name="found.good" value="true"/>
-      </then>
-      <else>
-        <property name="next.bad" value="${current.rev}"/>
-      </else>
-    </if>
-  </target>
 </project>
diff --git a/history.sh b/history.sh
new file mode 100644
index 0000000..ce11c21
--- /dev/null
+++ b/history.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# You can override with env vars when invoking from Ant
+DIFF_FILE="${DIFF_FILE:-history.diff}"
+
+# Remember where we started, so we can optionally restore later
+ORIG_HEAD="$(git rev-parse HEAD)"
+BROKEN_COMMIT=""
+
+# Compile target to test (defaults to 'compile', change if necessary)
+ANT_TARGET="${ANT_TARGET:-compile}"
+
+while true; do
+  echo "[history.sh] Trying to build commit $(git rev-parse --short HEAD) …"
+  if ant -q "${ANT_TARGET}"; then
+    echo "[history.sh] Build succeeded on commit $(git rev-parse --short HEAD)"
+    break
+  fi
+
+  if [[ -z "${BROKEN_COMMIT}" ]]; then
+    BROKEN_COMMIT="$(git rev-parse HEAD)"
+  fi
+
+  # If this is the first commit, stop the search
+  if [[ "$(git rev-list --count HEAD)" -eq 1 ]]; then
+    echo "[history.sh] Reached the first commit without a successful build. Aborting."
+    exit 1
+  fi
+
+  # Step back one commit
+  git reset --hard HEAD^
+
+done
+
+# If we discovered a broken commit, emit the diff
+if [[ -n "${BROKEN_COMMIT}" ]]; then
+  echo "[history.sh] Saving diff between working HEAD and first broken commit ${BROKEN_COMMIT:0:7} → ${DIFF_FILE}"
+  git diff HEAD "${BROKEN_COMMIT}" > "${DIFF_FILE}"
+fi
+
+# Restore original state (comment this line if you prefer to stay on the good commit)
+# git checkout -q "${ORIG_HEAD}"
+
+exit 0
diff --git a/lib/ant-contrib-1.0b2.jar b/lib/ant-contrib-1.0b2.jar
new file mode 100644
index 0000000..ea817cd
Binary files /dev/null and b/lib/ant-contrib-1.0b2.jar differ
diff --git a/lib/js-22.3.1.jar b/lib/js-22.3.1.jar
new file mode 100644
index 0000000..136cfc0
Binary files /dev/null and b/lib/js-22.3.1.jar differ
diff --git a/lib/js-scriptengine-23.1.2.jar b/lib/js-scriptengine-23.1.2.jar
new file mode 100644
index 0000000..e75ee09
Binary files /dev/null and b/lib/js-scriptengine-23.1.2.jar differ