Generated project

2025-04-03 10:08:22 +00:00
commit e0e60be428
30 changed files with 1565 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,14 @@
+/target/
+.idea/
+.vscode/
+.settings
+.project
+.classpath
+
+*.iml
+.DS_Store
+
+# The following files are generated/updated by vaadin-maven-plugin
+node_modules/
+src/main/frontend/generated/
+vite.generated.ts
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
--- a/.prettierrc.json
+++ b/.prettierrc.json
@@ -0,0 +1,6 @@
+{
+    "singleQuote": true,
+    "printWidth": 120,
+    "bracketSameLine": true
+  }
+  
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -0,0 +1,9 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.
+
+In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to http://unlicense.org
--- a/README.md
+++ b/README.md
@@ -0,0 +1,9 @@
+# Votianlt README
+
+To start the application in development mode, run: `./mvnw`
+
+To build the application in production mode, run: `./mvnw -Pproduction package`
+
+## Getting Started
+
+The [Getting Started](https://vaadin.com/docs/latest/getting-started) guide will quickly familiarize you with your new Votianlt implementation. You'll learn how to set up your development environment, understand the project structure, and find resources to help you add muscles to your skeleton — transforming it into a fully-featured application.
--- a/eclipse-formatter.xml
+++ b/eclipse-formatter.xml
@@ -0,0 +1,283 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<profiles version="13">
+    <profile kind="CodeFormatterProfile" name="Vaadin Java Conventions 20241010" version="13">
+        <setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_before_root_tags" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.disabling_tag" value="@formatter:off"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_annotation" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_type_parameters" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_type_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_arguments" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.brace_position_for_anonymous_type_declaration" value="end_of_line"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_case" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_brace_in_array_initializer" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_block_boundaries" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_annotation_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_closing_brace_in_array_initializer" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_annotation" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_field" value="0"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_while" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.use_on_off_tags" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_annotation_type_member_declaration" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_else_in_if_statement" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_prefix_operator" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.keep_else_statement_on_same_line" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_ellipsis" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_for_parameter" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_annotation_type_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_breaks_compare_to_cases" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_at_in_annotation" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_multiple_fields" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_expressions_in_array_initializer" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_conditional_expression" value="80"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_for" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_binary_operator" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_wildcard" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.brace_position_for_array_initializer" value="end_of_line"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_enum_constant" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_finally_in_try_statement" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_local_variable" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_catch_in_try_statement" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_while" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_after_package" value="1"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_parameters" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.continuation_indentation" value="2"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_postfix_operator" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_method_invocation" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_arguments" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_superinterfaces" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_new_chunk" value="1"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_binary_operator" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_package" value="0"/>
+        <setting id="org.eclipse.jdt.core.compiler.source" value="17"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_constant_arguments" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_constructor_declaration" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.format_line_comments" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_angle_bracket_in_type_arguments" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_declarations" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.join_wrapped_lines" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_block" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_explicit_constructor_call" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_invocation_arguments" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_member_type" value="1"/>
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+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_method_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_selector_in_method_invocation" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_switch" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_unary_operator" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_case" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.indent_parameter_description" value="true"/>
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+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_switch" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_enum_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_parameters" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_type_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.clear_blank_lines_in_block_comment" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.lineSplit" value="120"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_if" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_brackets_in_array_type_reference" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_parenthesized_expression" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_explicitconstructorcall_arguments" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_constructor_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_first_class_body_declaration" value="0"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_method" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indentation.size" value="8"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_declaration" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.enabling_tag" value="@formatter:on"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_enum_constant" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_superclass_in_type_declaration" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_assignment" value="0"/>
+        <setting id="org.eclipse.jdt.core.compiler.problem.assertIdentifier" value="error"/>
+        <setting id="org.eclipse.jdt.core.formatter.tabulation.char" value="space"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_constructor_declaration_parameters" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_prefix_operator" value="do not insert"/>
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+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_method" value="1"/>
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+        <setting id="org.eclipse.jdt.core.formatter.format_guardian_clause_on_one_line" value="false"/>
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+        <setting id="org.eclipse.jdt.core.compiler.problem.enumIdentifier" value="error"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_switchstatements_compare_to_switch" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_ellipsis" value="do not insert"/>
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+        <setting id="org.eclipse.jdt.core.formatter.compact_else_if" value="true"/>
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+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_binary_expression" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.brace_position_for_enum_declaration" value="end_of_line"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_type" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_while" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode" value="enabled"/>
+        <setting id="org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_label" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_parameter" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_type_parameters" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_invocation" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_while_in_do_statement" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_enum_constant" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.format_javadoc_comments" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.line_length" value="80"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_package" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_between_import_groups" value="1"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_enum_constant_arguments" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.brace_position_for_constructor_declaration" value="end_of_line"/>
+        <setting id="org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body" value="0"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_conditional" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_type_header" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation_type_member_declaration" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.wrap_before_binary_operator" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_declaration_header" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_between_type_declarations" value="1"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_synchronized" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_statements_compare_to_block" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_superinterfaces_in_enum_declaration" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.join_lines_in_comments" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_conditional" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_field_declarations" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_compact_if" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_for_inits" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_switchstatements_compare_to_cases" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_array_initializer" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_default" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_and_in_type_parameter" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_constructor_declaration" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_imports" value="1"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_assert" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.format_html" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_method_declaration" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_parameters" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_allocation_expression" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_anonymous_type_declaration" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_conditional" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_for" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_postfix_operator" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.format_source_code" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_synchronized" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_allocation_expression" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_constructor_declaration_throws" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_parameters_in_method_declaration" value="16"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_brace_in_array_initializer" value="insert"/>
+        <setting id="org.eclipse.jdt.core.compiler.codegen.targetPlatform" value="17"/>
+        <setting id="org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_annotation" value="0"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.format_header" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.format_block_comments" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_enum_constant" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.alignment_for_enum_constants" value="48"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_block" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_annotation_declaration_header" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_parenthesized_expression" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_parenthesized_expression" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_catch" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_local_declarations" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_increments" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_invocation" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_assert" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.brace_position_for_type_declaration" value="end_of_line"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_array_initializer" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_braces_in_array_initializer" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_declaration" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon_in_for" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_catch" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_field_declarations" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_annotation" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_parameterized_type_reference" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_method_invocation_arguments" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_javadoc_boundaries" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_after_imports" value="1"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_local_declarations" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_constant_header" value="true"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_after_semicolon_in_for" value="insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_arguments" value="do not insert"/>
+        <setting id="org.eclipse.jdt.core.formatter.never_indent_block_comments_on_first_column" value="false"/>
+        <setting id="org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line" value="false"/>
+    </profile>
+</profiles>
--- a/259
+++ b/259
@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
--- a/mvnw.cmd
+++ b/mvnw.cmd
@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
--- a/pom.xml
+++ b/pom.xml
@@ -0,0 +1,229 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>de.assecutor.votianlt</groupId>
+    <artifactId>votianlt</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <packaging>jar</packaging>
+
+    <properties>
+        <java.version>21</java.version>
+        <vaadin.version>24.7.0</vaadin.version>
+        <archunit.version>1.3.0</archunit.version>
+    </properties>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.4.3</version>
+        <relativePath/>
+    </parent>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>com.vaadin</groupId>
+                <artifactId>vaadin-bom</artifactId>
+                <version>${vaadin.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <!-- Vaadin -->
+        <dependency>
+            <groupId>com.vaadin</groupId>
+            <!-- Replace artifactId with vaadin-core to use only free components -->
+            <artifactId>vaadin</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.vaadin</groupId>
+            <artifactId>vaadin-spring-boot-starter</artifactId>
+        </dependency>
+
+        <!-- Persistence -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <!-- Replace with the database you will be using in production -->
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- Additional Spring Dependencies -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <!-- Testing -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.tngtech.archunit</groupId>
+            <artifactId>archunit-junit5</artifactId>
+            <version>${archunit.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <defaultGoal>spring-boot:run</defaultGoal>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>com.diffplug.spotless</groupId>
+                <artifactId>spotless-maven-plugin</artifactId>
+                <version>2.43.0</version>
+                <configuration>
+                    <java>
+                        <eclipse>
+                            <version>4.33</version>
+                            <file>${project.basedir}/eclipse-formatter.xml</file>
+                        </eclipse>
+                    </java>
+                    <typescript>
+                        <includes>
+                            <include>src/main/frontend/**/*.ts</include>
+                            <include>src/main/frontend/**/*.tsx</include>
+                        </includes>
+                        <excludes>
+                            <exclude>src/main/frontend/generated/**</exclude>
+                        </excludes>
+                        <prettier>
+                            <prettierVersion>3.3.3</prettierVersion>
+                            <configFile>${project.basedir}/.prettierrc.json</configFile>
+                        </prettier>
+                    </typescript>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>com.vaadin</groupId>
+                <artifactId>vaadin-maven-plugin</artifactId>
+                <version>${vaadin.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>prepare-frontend</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-wrapper-plugin</artifactId>
+                <version>3.3.2</version>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>production</id>
+            <dependencies>
+                <!-- Exclude development dependencies from production -->
+                <dependency>
+                    <groupId>com.vaadin</groupId>
+                    <artifactId>vaadin-core</artifactId>
+                    <exclusions>
+                        <exclusion>
+                            <groupId>com.vaadin</groupId>
+                            <artifactId>vaadin-dev</artifactId>
+                        </exclusion>
+                    </exclusions>
+                </dependency>
+            </dependencies>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>com.vaadin</groupId>
+                        <artifactId>vaadin-maven-plugin</artifactId>
+                        <version>${vaadin.version}</version>
+                        <executions>
+                            <execution>
+                                <goals>
+                                    <goal>build-frontend</goal>
+                                </goals>
+                                <phase>compile</phase>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+        <profile>
+            <id>integration-test</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-failsafe-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <goals>
+                                    <goal>integration-test</goal>
+                                    <goal>verify</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <trimStackTrace>false</trimStackTrace>
+                            <enableAssertions>true</enableAssertions>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <repositories>
+        <repository>
+            <id>vaadin-directory</id>
+            <url>https://maven.vaadin.com/vaadin-addons</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
+        <repository>
+            <id>vaadin-prereleases</id>
+            <url>https://maven.vaadin.com/vaadin-prereleases</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
+    </repositories>
+
+    <pluginRepositories>
+        <pluginRepository>
+            <id>vaadin-prereleases</id>
+            <url>https://maven.vaadin.com/vaadin-prereleases</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </pluginRepository>
+    </pluginRepositories>
+</project>
--- a/src/main/frontend/index.html
+++ b/src/main/frontend/index.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<!--
+This file is auto-generated by Vaadin.
+-->
+
+<html>
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <style>
+    body, #outlet {
+      height: 100vh;
+      width: 100%;
+      margin: 0;
+    }
+  </style>
+  <!-- index.ts is included here automatically (either by the dev server or during the build) -->
+</head>
+<body>
+  <!-- This outlet div is where the views are rendered -->
+  <div id="outlet"></div>
+</body>
+</html>
--- a/src/main/frontend/themes/default/styles.css
+++ b/src/main/frontend/themes/default/styles.css
--- a/src/main/frontend/themes/default/theme.json
+++ b/src/main/frontend/themes/default/theme.json
@@ -0,0 +1,9 @@
+{
+  "lumoImports": [
+    "typography",
+    "color",
+    "spacing",
+    "badge",
+    "utility"
+  ]
+}
--- a/src/main/java/de/assecutor/votianlt/Application.java
+++ b/src/main/java/de/assecutor/votianlt/Application.java
@@ -0,0 +1,24 @@
+package de.assecutor.votianlt;
+
+import com.vaadin.flow.component.page.AppShellConfigurator;
+import com.vaadin.flow.theme.Theme;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+import java.time.Clock;
+
+@SpringBootApplication
+@Theme("default")
+public class Application implements AppShellConfigurator {
+
+    @Bean
+    public Clock clock() {
+        return Clock.systemDefaultZone(); // You can also use Clock.systemUTC()
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}
--- a/src/main/java/de/assecutor/votianlt/base/domain/AbstractEntity.java
+++ b/src/main/java/de/assecutor/votianlt/base/domain/AbstractEntity.java
@@ -0,0 +1,44 @@
+package de.assecutor.votianlt.base.domain;
+
+import jakarta.persistence.MappedSuperclass;
+import org.jspecify.annotations.Nullable;
+import org.springframework.data.util.ProxyUtils;
+
+@MappedSuperclass
+public abstract class AbstractEntity<ID> {
+
+    public abstract @Nullable ID getId();
+
+    @Override
+    public String toString() {
+        return "%s{id=%s}".formatted(getClass().getSimpleName(), getId());
+    }
+
+    @Override
+    public int hashCode() {
+        // Hashcode should never change during the lifetime of an object. Because of
+        // this we can't use getId() to calculate the hashcode. Unless you have sets
+        // with lots of entities in them, returning the same hashcode should not be a
+        // problem.
+        return ProxyUtils.getUserClass(getClass()).hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        } else if (obj == this) {
+            return true;
+        }
+
+        var thisUserClass = ProxyUtils.getUserClass(getClass());
+        var otherUserClass = ProxyUtils.getUserClass(obj);
+        if (thisUserClass != otherUserClass) {
+            return false;
+        }
+
+        var id = getId();
+        return id != null && id.equals(((AbstractEntity<?>) obj).getId());
+    }
+
+}
--- a/src/main/java/de/assecutor/votianlt/base/domain/package-info.java
+++ b/src/main/java/de/assecutor/votianlt/base/domain/package-info.java
@@ -0,0 +1,4 @@
+@NullMarked
+package de.assecutor.votianlt.base.domain;
+
+import org.jspecify.annotations.NullMarked;
--- a/src/main/java/de/assecutor/votianlt/base/ui/component/ViewToolbar.java
+++ b/src/main/java/de/assecutor/votianlt/base/ui/component/ViewToolbar.java
@@ -0,0 +1,41 @@
+package de.assecutor.votianlt.base.ui.component;
+
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.Composite;
+import com.vaadin.flow.component.applayout.DrawerToggle;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.H1;
+import com.vaadin.flow.component.html.Header;
+import com.vaadin.flow.theme.lumo.LumoUtility.*;
+
+public final class ViewToolbar extends Composite<Header> {
+
+    public ViewToolbar(String viewTitle, Component... components) {
+        addClassNames(Display.FLEX, FlexDirection.COLUMN, JustifyContent.BETWEEN, AlignItems.STRETCH, Gap.MEDIUM,
+                FlexDirection.Breakpoint.Medium.ROW, AlignItems.Breakpoint.Medium.CENTER);
+
+        var drawerToggle = new DrawerToggle();
+        drawerToggle.addClassNames(Margin.NONE);
+
+        var title = new H1(viewTitle);
+        title.addClassNames(FontSize.XLARGE, Margin.NONE, FontWeight.LIGHT);
+
+        var toggleAndTitle = new Div(drawerToggle, title);
+        toggleAndTitle.addClassNames(Display.FLEX, AlignItems.CENTER);
+        getContent().add(toggleAndTitle);
+
+        if (components.length > 0) {
+            var actions = new Div(components);
+            actions.addClassNames(Display.FLEX, FlexDirection.COLUMN, JustifyContent.BETWEEN, Flex.GROW, Gap.SMALL,
+                    FlexDirection.Breakpoint.Medium.ROW);
+            getContent().add(actions);
+        }
+    }
+
+    public static Component group(Component... components) {
+        var group = new Div(components);
+        group.addClassNames(Display.FLEX, FlexDirection.COLUMN, AlignItems.STRETCH, Gap.SMALL,
+                FlexDirection.Breakpoint.Medium.ROW, AlignItems.Breakpoint.Medium.CENTER);
+        return group;
+    }
+}
--- a/src/main/java/de/assecutor/votianlt/base/ui/component/package-info.java
+++ b/src/main/java/de/assecutor/votianlt/base/ui/component/package-info.java
@@ -0,0 +1,4 @@
+@NullMarked
+package de.assecutor.votianlt.base.ui.component;
+
+import org.jspecify.annotations.NullMarked;
--- a/src/main/java/de/assecutor/votianlt/base/ui/view/MainErrorHandler.java
+++ b/src/main/java/de/assecutor/votianlt/base/ui/view/MainErrorHandler.java
@@ -0,0 +1,32 @@
+package de.assecutor.votianlt.base.ui.view;
+
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.notification.NotificationVariant;
+import com.vaadin.flow.server.VaadinServiceInitListener;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+class MainErrorHandler {
+
+    private static final Logger log = LoggerFactory.getLogger(MainErrorHandler.class);
+
+    @Bean
+    public VaadinServiceInitListener errorHandlerInitializer() {
+        return (event) -> event.getSource().addSessionInitListener(
+                sessionInitEvent -> sessionInitEvent.getSession().setErrorHandler(errorEvent -> {
+                    log.error("An unexpected error occurred", errorEvent.getThrowable());
+                    errorEvent.getComponent().flatMap(Component::getUI).ifPresent(ui -> {
+                        var notification = new Notification(
+                                "An unexpected error has occurred. Please try again later.");
+                        notification.addThemeVariants(NotificationVariant.LUMO_ERROR);
+                        notification.setPosition(Notification.Position.TOP_CENTER);
+                        notification.setDuration(3000);
+                        ui.access(notification::open);
+                    });
+                }));
+    }
+}
--- a/src/main/java/de/assecutor/votianlt/base/ui/view/MainLayout.java
+++ b/src/main/java/de/assecutor/votianlt/base/ui/view/MainLayout.java
@@ -0,0 +1,78 @@
+package de.assecutor.votianlt.base.ui.view;
+
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.applayout.AppLayout;
+import com.vaadin.flow.component.avatar.Avatar;
+import com.vaadin.flow.component.avatar.AvatarVariant;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.Span;
+import com.vaadin.flow.component.icon.Icon;
+import com.vaadin.flow.component.icon.VaadinIcon;
+import com.vaadin.flow.component.menubar.MenuBar;
+import com.vaadin.flow.component.menubar.MenuBarVariant;
+import com.vaadin.flow.component.orderedlayout.Scroller;
+import com.vaadin.flow.component.sidenav.SideNav;
+import com.vaadin.flow.component.sidenav.SideNavItem;
+import com.vaadin.flow.router.Layout;
+import com.vaadin.flow.server.menu.MenuConfiguration;
+import com.vaadin.flow.server.menu.MenuEntry;
+
+import static com.vaadin.flow.theme.lumo.LumoUtility.*;
+
+@Layout
+public final class MainLayout extends AppLayout {
+
+    public MainLayout() {
+        setPrimarySection(Section.DRAWER);
+        addToDrawer(createHeader(), new Scroller(createSideNav()), createUserMenu());
+    }
+
+    private Div createHeader() {
+        // TODO Replace with real application logo and name
+        var appLogo = VaadinIcon.CUBES.create();
+        appLogo.addClassNames(TextColor.PRIMARY, IconSize.LARGE);
+
+        var appName = new Span("Votianlt");
+        appName.addClassNames(FontWeight.SEMIBOLD, FontSize.LARGE);
+
+        var header = new Div(appLogo, appName);
+        header.addClassNames(Display.FLEX, Padding.MEDIUM, Gap.MEDIUM, AlignItems.CENTER);
+        return header;
+    }
+
+    private SideNav createSideNav() {
+        var nav = new SideNav();
+        nav.addClassNames(Margin.Horizontal.MEDIUM);
+        MenuConfiguration.getMenuEntries().forEach(entry -> nav.addItem(createSideNavItem(entry)));
+        return nav;
+    }
+
+    private SideNavItem createSideNavItem(MenuEntry menuEntry) {
+        if (menuEntry.icon() != null) {
+            return new SideNavItem(menuEntry.title(), menuEntry.path(), new Icon(menuEntry.icon()));
+        } else {
+            return new SideNavItem(menuEntry.title(), menuEntry.path());
+        }
+    }
+
+    private Component createUserMenu() {
+        // TODO Replace with real user information and actions
+        var avatar = new Avatar("John Smith");
+        avatar.addThemeVariants(AvatarVariant.LUMO_XSMALL);
+        avatar.addClassNames(Margin.Right.SMALL);
+        avatar.setColorIndex(5);
+
+        var userMenu = new MenuBar();
+        userMenu.addThemeVariants(MenuBarVariant.LUMO_TERTIARY_INLINE);
+        userMenu.addClassNames(Margin.MEDIUM);
+
+        var userMenuItem = userMenu.addItem(avatar);
+        userMenuItem.add("John Smith");
+        userMenuItem.getSubMenu().addItem("View Profile");
+        userMenuItem.getSubMenu().addItem("Manage Settings");
+        userMenuItem.getSubMenu().addItem("Logout");
+
+        return userMenu;
+    }
+
+}
--- a/src/main/java/de/assecutor/votianlt/base/ui/view/package-info.java
+++ b/src/main/java/de/assecutor/votianlt/base/ui/view/package-info.java
@@ -0,0 +1,4 @@
+@NullMarked
+package de.assecutor.votianlt.base.ui.view;
+
+import org.jspecify.annotations.NullMarked;
--- a/src/main/java/de/assecutor/votianlt/todo/domain/Todo.java
+++ b/src/main/java/de/assecutor/votianlt/todo/domain/Todo.java
@@ -0,0 +1,61 @@
+package de.assecutor.votianlt.todo.domain;
+
+import de.assecutor.votianlt.base.domain.AbstractEntity;
+import jakarta.persistence.*;
+import jakarta.validation.constraints.Size;
+import org.jspecify.annotations.Nullable;
+
+import java.time.Instant;
+import java.time.LocalDate;
+
+@Entity
+@Table(name = "todo")
+public class Todo extends AbstractEntity<Long> {
+
+    public static final int DESCRIPTION_MAX_LENGTH = 255;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "todo_id")
+    private Long id;
+
+    @Column(name = "description", nullable = false, length = DESCRIPTION_MAX_LENGTH)
+    @Size(max = DESCRIPTION_MAX_LENGTH)
+    private String description;
+
+    @Column(name = "creation_date", nullable = false)
+    private Instant creationDate;
+
+    @Column(name = "due_date")
+    @Nullable
+    private LocalDate dueDate;
+
+    @Override
+    public @Nullable Long getId() {
+        return id;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Instant getCreationDate() {
+        return creationDate;
+    }
+
+    public void setCreationDate(Instant creationDate) {
+        this.creationDate = creationDate;
+    }
+
+    public @Nullable LocalDate getDueDate() {
+        return dueDate;
+    }
+
+    public void setDueDate(@Nullable LocalDate dueDate) {
+        this.dueDate = dueDate;
+    }
+}
--- a/src/main/java/de/assecutor/votianlt/todo/domain/TodoRepository.java
+++ b/src/main/java/de/assecutor/votianlt/todo/domain/TodoRepository.java
@@ -0,0 +1,12 @@
+package de.assecutor.votianlt.todo.domain;
+
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+
+public interface TodoRepository extends JpaRepository<Todo, Long>, JpaSpecificationExecutor<Todo> {
+
+    // If you don't need a total row count, Slice is better than Page.
+    Slice<Todo> findAllBy(Pageable pageable);
+}
--- a/src/main/java/de/assecutor/votianlt/todo/domain/package-info.java
+++ b/src/main/java/de/assecutor/votianlt/todo/domain/package-info.java
@@ -0,0 +1,4 @@
+@NullMarked
+package de.assecutor.votianlt.todo.domain;
+
+import org.jspecify.annotations.NullMarked;
--- a/src/main/java/de/assecutor/votianlt/todo/service/TodoService.java
+++ b/src/main/java/de/assecutor/votianlt/todo/service/TodoService.java
@@ -0,0 +1,43 @@
+package de.assecutor.votianlt.todo.service;
+
+import de.assecutor.votianlt.todo.domain.Todo;
+import de.assecutor.votianlt.todo.domain.TodoRepository;
+import org.jspecify.annotations.Nullable;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Clock;
+import java.time.LocalDate;
+import java.util.List;
+
+@Service
+@Transactional(propagation = Propagation.REQUIRES_NEW)
+public class TodoService {
+
+    private final TodoRepository todoRepository;
+
+    private final Clock clock;
+
+    TodoService(TodoRepository todoRepository, Clock clock) {
+        this.todoRepository = todoRepository;
+        this.clock = clock;
+    }
+
+    public void createTodo(String description, @Nullable LocalDate dueDate) {
+        if ("fail".equals(description)) {
+            throw new RuntimeException("This is for testing the error handler");
+        }
+        var todo = new Todo();
+        todo.setDescription(description);
+        todo.setCreationDate(clock.instant());
+        todo.setDueDate(dueDate);
+        todoRepository.saveAndFlush(todo);
+    }
+
+    public List<Todo> list(Pageable pageable) {
+        return todoRepository.findAllBy(pageable).toList();
+    }
+
+}
--- a/src/main/java/de/assecutor/votianlt/todo/service/package-info.java
+++ b/src/main/java/de/assecutor/votianlt/todo/service/package-info.java
@@ -0,0 +1,4 @@
+@NullMarked
+package de.assecutor.votianlt.todo.service;
+
+import org.jspecify.annotations.NullMarked;
--- a/src/main/java/de/assecutor/votianlt/todo/ui/view/TodoView.java
+++ b/src/main/java/de/assecutor/votianlt/todo/ui/view/TodoView.java
@@ -0,0 +1,83 @@
+package de.assecutor.votianlt.todo.ui.view;
+
+import de.assecutor.votianlt.base.ui.component.ViewToolbar;
+import de.assecutor.votianlt.todo.domain.Todo;
+import de.assecutor.votianlt.todo.service.TodoService;
+import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.button.ButtonVariant;
+import com.vaadin.flow.component.datepicker.DatePicker;
+import com.vaadin.flow.component.grid.Grid;
+import com.vaadin.flow.component.html.Main;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.notification.NotificationVariant;
+import com.vaadin.flow.component.textfield.TextField;
+import com.vaadin.flow.router.Menu;
+import com.vaadin.flow.router.PageTitle;
+import com.vaadin.flow.router.Route;
+import com.vaadin.flow.theme.lumo.LumoUtility;
+
+import java.time.Clock;
+import java.time.format.DateTimeFormatter;
+import java.time.format.FormatStyle;
+import java.util.Optional;
+
+import static com.vaadin.flow.spring.data.VaadinSpringDataHelpers.toSpringPageRequest;
+
+@Route("")
+@PageTitle("Task List")
+@Menu(order = 0, icon = "vaadin:clipboard-check", title = "Task List")
+public class TodoView extends Main {
+
+    private final TodoService todoService;
+
+    final TextField description;
+    final DatePicker dueDate;
+    final Button createBtn;
+    final Grid<Todo> todoGrid;
+
+    public TodoView(TodoService todoService, Clock clock) {
+        this.todoService = todoService;
+
+        description = new TextField();
+        description.setPlaceholder("What do you want to do?");
+        description.setAriaLabel("Task description");
+        description.setMaxLength(Todo.DESCRIPTION_MAX_LENGTH);
+        description.setMinWidth("20em");
+
+        dueDate = new DatePicker();
+        dueDate.setPlaceholder("Due date");
+        dueDate.setAriaLabel("Due date");
+
+        createBtn = new Button("Create", event -> createTodo());
+        createBtn.addThemeVariants(ButtonVariant.LUMO_PRIMARY);
+
+        var dateTimeFormatter = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.MEDIUM).withZone(clock.getZone())
+                .withLocale(getLocale());
+        var dateFormatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM).withLocale(getLocale());
+
+        todoGrid = new Grid<>();
+        todoGrid.setItems(query -> todoService.list(toSpringPageRequest(query)).stream());
+        todoGrid.addColumn(Todo::getDescription).setHeader("Description");
+        todoGrid.addColumn(todo -> Optional.ofNullable(todo.getDueDate()).map(dateFormatter::format).orElse("Never"))
+                .setHeader("Due Date");
+        todoGrid.addColumn(todo -> dateTimeFormatter.format(todo.getCreationDate())).setHeader("Creation Date");
+        todoGrid.setSizeFull();
+
+        setSizeFull();
+        addClassNames(LumoUtility.BoxSizing.BORDER, LumoUtility.Display.FLEX, LumoUtility.FlexDirection.COLUMN,
+                LumoUtility.Padding.MEDIUM, LumoUtility.Gap.SMALL);
+
+        add(new ViewToolbar("Task List", ViewToolbar.group(description, dueDate, createBtn)));
+        add(todoGrid);
+    }
+
+    private void createTodo() {
+        todoService.createTodo(description.getValue(), dueDate.getValue());
+        todoGrid.getDataProvider().refreshAll();
+        description.clear();
+        dueDate.clear();
+        Notification.show("Task added", 3000, Notification.Position.BOTTOM_END)
+                .addThemeVariants(NotificationVariant.LUMO_SUCCESS);
+    }
+
+}
--- a/src/main/java/de/assecutor/votianlt/todo/ui/view/package-info.java
+++ b/src/main/java/de/assecutor/votianlt/todo/ui/view/package-info.java
@@ -0,0 +1,4 @@
+@NullMarked
+package de.assecutor.votianlt.todo.ui.view;
+
+import org.jspecify.annotations.NullMarked;
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -0,0 +1,12 @@
+server.port=${PORT:8080}
+logging.level.org.atmosphere=warn
+spring.mustache.check-template-location=false
+
+# Launch the default browser when starting the application in development mode
+vaadin.launch-browser=true
+# To improve the performance during development.
+# For more information https://vaadin.com/docs/latest/flow/integrations/spring/configuration#special-configuration-parameters
+vaadin.allowed-packages=com.vaadin,org.vaadin,de.assecutor.votianlt
+
+# Open-in-view is only needed if you use lazy-loaded entities in your Flow views.
+spring.jpa.open-in-view=false
--- a/src/test/java/de/assecutor/votianlt/ArchitectureTest.java
+++ b/src/test/java/de/assecutor/votianlt/ArchitectureTest.java
@@ -0,0 +1,48 @@
+package de.assecutor.votianlt;
+
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+import org.springframework.data.repository.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.classes;
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.noClasses;
+import static com.tngtech.archunit.library.dependencies.SlicesRuleDefinition.slices;
+
+@AnalyzeClasses(packages = ArchitectureTest.BASE_PACKAGE)
+class ArchitectureTest {
+
+    static final String BASE_PACKAGE = "de.assecutor.votianlt";
+
+    // TODO Add your own rules and remove those that don't apply to your project
+
+    @ArchTest
+    public static final ArchRule domain_model_should_not_depend_on_application_services = noClasses().that()
+            .resideInAPackage(BASE_PACKAGE + "..domain..").should().dependOnClassesThat()
+            .resideInAPackage(BASE_PACKAGE + "..service..");
+
+    @ArchTest
+    public static final ArchRule domain_model_should_not_depend_on_the_user_interface = noClasses().that()
+            .resideInAPackage(BASE_PACKAGE + "..domain..").should().dependOnClassesThat()
+            .resideInAnyPackage(BASE_PACKAGE + "..ui..");
+
+    @ArchTest
+    public static final ArchRule repositories_should_only_be_used_by_application_services_and_other_domain_classes = classes()
+            .that().areAssignableTo(Repository.class).should().onlyHaveDependentClassesThat()
+            .resideInAnyPackage(BASE_PACKAGE + "..domain..", BASE_PACKAGE + "..service..");
+
+    @ArchTest
+    public static final ArchRule repositories_should_only_be_accessed_by_transactional_classes = classes().that()
+            .areAssignableTo(Repository.class).should().onlyBeAccessed().byClassesThat()
+            .areAnnotatedWith(Transactional.class);
+
+    @ArchTest
+    public static final ArchRule application_services_should_not_depend_on_the_user_interface = noClasses().that()
+            .resideInAPackage(BASE_PACKAGE + "..service..").should().dependOnClassesThat()
+            .resideInAnyPackage(BASE_PACKAGE + "..ui..");
+
+    @ArchTest
+    public static final ArchRule there_should_not_be_circular_dependencies_between_feature_packages = slices()
+            .matching(BASE_PACKAGE + ".(*)..").should().beFreeOfCycles();
+}
--- a/src/test/java/de/assecutor/votianlt/todo/service/TodoServiceIT.java
+++ b/src/test/java/de/assecutor/votianlt/todo/service/TodoServiceIT.java
@@ -0,0 +1,54 @@
+package de.assecutor.votianlt.todo.service;
+
+import de.assecutor.votianlt.todo.domain.Todo;
+import de.assecutor.votianlt.todo.domain.TodoRepository;
+import jakarta.validation.ValidationException;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Clock;
+import java.time.LocalDate;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.MOCK)
+@Transactional(propagation = Propagation.NOT_SUPPORTED)
+class TodoServiceIT {
+
+    @Autowired
+    TodoService todoService;
+
+    @Autowired
+    TodoRepository todoRepository;
+
+    @Autowired
+    Clock clock;
+
+    @AfterEach
+    void cleanUp() {
+        todoRepository.deleteAll();
+    }
+
+    @Test
+    public void todos_are_stored_in_the_database_with_the_current_timestamp() {
+        var now = clock.instant();
+        var due = LocalDate.of(2025, 2, 7);
+        todoService.createTodo("Do this", due);
+        assertThat(todoService.list(PageRequest.ofSize(1))).singleElement()
+                .matches(todo -> todo.getDescription().equals("Do this") && due.equals(todo.getDueDate())
+                        && todo.getCreationDate().isAfter(now));
+    }
+
+    @Test
+    public void todos_are_validated_before_they_are_stored() {
+        assertThatThrownBy(() -> todoService.createTodo("X".repeat(Todo.DESCRIPTION_MAX_LENGTH + 1), null))
+                .isInstanceOf(ValidationException.class);
+        assertThat(todoRepository.count()).isEqualTo(0);
+    }
+}