diff --git a/.coverage b/.coverage
deleted file mode 100644
index f04efa0..0000000
Binary files a/.coverage and /dev/null differ
diff --git a/codecov.yml.bkp b/codecov.yml.bkp
deleted file mode 100644
index a86ec17..0000000
--- a/codecov.yml.bkp
+++ /dev/null
@@ -1,42 +0,0 @@
-profiling:
-  critical_files_paths:
-    - app/calculator.py
-
-comment:
-  show_critical_paths: true
-
-flag_management:
-  default_rules: # the rules that will be followed for any flag added, generally
-    carryforward: true
-    statuses:
-      - type: project
-        target: auto
-        threshold: 1%
-      - type: patch
-        target: 1%
-
-component_management:
-  default_rules:
-    statuses:
-      - type: project
-        target: auto
-        threshold: 1%
-      - type: patch
-        target: 1%
-  individual_components:
-    - component_id: dictionary
-      name: DictionaryApp
-      paths:
-        - "**/dictionary.py"
-    - component_id: calculator
-      name: CalculatorApp
-      paths:
-        - "**/calculator.py"
-      flag_regexes:
-        - "unit"
-    - component_id: banker
-      name: BankerApp
-      paths:
-        - "**/banker.py"
-      flag_regexes:
-        - "integration"
diff --git a/coverage.xml b/coverage.xml
deleted file mode 100644
index 3b88e80..0000000
--- a/coverage.xml
+++ /dev/null
@@ -1,430 +0,0 @@
-<?xml version="1.0" ?>
-<coverage version="7.3.2" timestamp="1717164004763" lines-valid="314" lines-covered="122" line-rate="0.3885" branches-covered="0" branches-valid="0" branch-rate="0" complexity="0">
-	<!-- Generated by coverage.py: https://coverage.readthedocs.io/en/7.3.2 -->
-	<!-- Based on https://raw.githubusercontent.com/cobertura/web/master/htdocs/xml/coverage-04.dtd -->
-	<sources>
-		<source></source>
-	</sources>
-	<packages>
-		<package name=".Users.jerryfeng.Library.Python.3.12.lib.python.site-packages._distutils_hack" line-rate="0.05" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="/Users/jerryfeng/Library/Python/3.12/lib/python/site-packages/_distutils_hack/__init__.py" complexity="0" line-rate="0.05" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="2" hits="0"/>
-						<line number="3" hits="0"/>
-						<line number="6" hits="0"/>
-						<line number="9" hits="0"/>
-						<line number="10" hits="0"/>
-						<line number="11" hits="0"/>
-						<line number="12" hits="0"/>
-						<line number="15" hits="0"/>
-						<line number="16" hits="0"/>
-						<line number="18" hits="0"/>
-						<line number="28" hits="0"/>
-						<line number="29" hits="0"/>
-						<line number="30" hits="0"/>
-						<line number="31" hits="0"/>
-						<line number="33" hits="0"/>
-						<line number="34" hits="0"/>
-						<line number="39" hits="0"/>
-						<line number="40" hits="0"/>
-						<line number="43" hits="0"/>
-						<line number="47" hits="0"/>
-						<line number="48" hits="0"/>
-						<line number="51" hits="0"/>
-						<line number="52" hits="0"/>
-						<line number="54" hits="0"/>
-						<line number="59" hits="0"/>
-						<line number="60" hits="0"/>
-						<line number="63" hits="0"/>
-						<line number="64" hits="0"/>
-						<line number="65" hits="0"/>
-						<line number="68" hits="0"/>
-						<line number="75" hits="0"/>
-						<line number="76" hits="0"/>
-						<line number="77" hits="0"/>
-						<line number="80" hits="0"/>
-						<line number="81" hits="0"/>
-						<line number="82" hits="0"/>
-						<line number="84" hits="0"/>
-						<line number="85" hits="0"/>
-						<line number="88" hits="0"/>
-						<line number="89" hits="0"/>
-						<line number="92" hits="1"/>
-						<line number="93" hits="1"/>
-						<line number="95" hits="1"/>
-						<line number="96" hits="1"/>
-						<line number="97" hits="1"/>
-						<line number="99" hits="0"/>
-						<line number="100" hits="0"/>
-						<line number="101" hits="0"/>
-						<line number="103" hits="0"/>
-						<line number="104" hits="0"/>
-						<line number="105" hits="0"/>
-						<line number="107" hits="0"/>
-						<line number="108" hits="0"/>
-						<line number="109" hits="0"/>
-						<line number="118" hits="0"/>
-						<line number="120" hits="0"/>
-						<line number="121" hits="0"/>
-						<line number="122" hits="0"/>
-						<line number="123" hits="0"/>
-						<line number="125" hits="0"/>
-						<line number="126" hits="0"/>
-						<line number="128" hits="0"/>
-						<line number="132" hits="0"/>
-						<line number="133" hits="0"/>
-						<line number="138" hits="0"/>
-						<line number="140" hits="0"/>
-						<line number="145" hits="0"/>
-						<line number="146" hits="0"/>
-						<line number="147" hits="0"/>
-						<line number="148" hits="0"/>
-						<line number="150" hits="0"/>
-						<line number="151" hits="0"/>
-						<line number="155" hits="0"/>
-						<line number="157" hits="0"/>
-						<line number="161" hits="0"/>
-						<line number="162" hits="0"/>
-						<line number="167" hits="0"/>
-						<line number="169" hits="0"/>
-						<line number="175" hits="0"/>
-						<line number="176" hits="0"/>
-						<line number="178" hits="0"/>
-						<line number="191" hits="0"/>
-						<line number="192" hits="0"/>
-						<line number="199" hits="0"/>
-						<line number="202" hits="0"/>
-						<line number="203" hits="0"/>
-						<line number="206" hits="0"/>
-						<line number="207" hits="0"/>
-						<line number="208" hits="0"/>
-						<line number="210" hits="0"/>
-						<line number="211" hits="0"/>
-						<line number="214" hits="0"/>
-						<line number="215" hits="0"/>
-						<line number="218" hits="0"/>
-						<line number="219" hits="0"/>
-						<line number="220" hits="0"/>
-						<line number="221" hits="0"/>
-						<line number="222" hits="0"/>
-						<line number="225" hits="0"/>
-						<line number="227" hits="0"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-		<package name=".Users.jerryfeng.Library.Python.3.12.lib.python.site-packages.anyio" line-rate="0.08421" branch-rate="0" complexity="0">
-			<classes>
-				<class name="pytest_plugin.py" filename="/Users/jerryfeng/Library/Python/3.12/lib/python/site-packages/anyio/pytest_plugin.py" complexity="0" line-rate="0.08421" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="0"/>
-						<line number="3" hits="0"/>
-						<line number="4" hits="0"/>
-						<line number="5" hits="0"/>
-						<line number="6" hits="0"/>
-						<line number="8" hits="0"/>
-						<line number="9" hits="0"/>
-						<line number="11" hits="0"/>
-						<line number="12" hits="0"/>
-						<line number="14" hits="0"/>
-						<line number="17" hits="0"/>
-						<line number="18" hits="0"/>
-						<line number="19" hits="0"/>
-						<line number="20" hits="0"/>
-						<line number="21" hits="0"/>
-						<line number="22" hits="0"/>
-						<line number="24" hits="0"/>
-						<line number="27" hits="0"/>
-						<line number="28" hits="0"/>
-						<line number="32" hits="0"/>
-						<line number="33" hits="0"/>
-						<line number="34" hits="0"/>
-						<line number="36" hits="0"/>
-						<line number="37" hits="0"/>
-						<line number="38" hits="0"/>
-						<line number="41" hits="0"/>
-						<line number="43" hits="0"/>
-						<line number="44" hits="0"/>
-						<line number="45" hits="0"/>
-						<line number="46" hits="0"/>
-						<line number="47" hits="0"/>
-						<line number="49" hits="0"/>
-						<line number="50" hits="0"/>
-						<line number="51" hits="0"/>
-						<line number="54" hits="0"/>
-						<line number="55" hits="1"/>
-						<line number="62" hits="0"/>
-						<line number="63" hits="0"/>
-						<line number="64" hits="0"/>
-						<line number="65" hits="0"/>
-						<line number="66" hits="0"/>
-						<line number="68" hits="0"/>
-						<line number="69" hits="0"/>
-						<line number="70" hits="0"/>
-						<line number="72" hits="0"/>
-						<line number="76" hits="0"/>
-						<line number="77" hits="0"/>
-						<line number="78" hits="0"/>
-						<line number="79" hits="0"/>
-						<line number="80" hits="0"/>
-						<line number="81" hits="0"/>
-						<line number="82" hits="0"/>
-						<line number="85" hits="0"/>
-						<line number="86" hits="0"/>
-						<line number="87" hits="1"/>
-						<line number="88" hits="1"/>
-						<line number="89" hits="1"/>
-						<line number="90" hits="0"/>
-						<line number="91" hits="0"/>
-						<line number="92" hits="0"/>
-						<line number="93" hits="0"/>
-						<line number="96" hits="0"/>
-						<line number="97" hits="0"/>
-						<line number="98" hits="1"/>
-						<line number="99" hits="0"/>
-						<line number="100" hits="0"/>
-						<line number="102" hits="1"/>
-						<line number="103" hits="1"/>
-						<line number="104" hits="0"/>
-						<line number="106" hits="0"/>
-						<line number="108" hits="0"/>
-						<line number="109" hits="0"/>
-						<line number="110" hits="0"/>
-						<line number="111" hits="0"/>
-						<line number="113" hits="0"/>
-						<line number="115" hits="0"/>
-						<line number="116" hits="0"/>
-						<line number="117" hits="0"/>
-						<line number="118" hits="0"/>
-						<line number="119" hits="0"/>
-						<line number="121" hits="0"/>
-						<line number="123" hits="1"/>
-						<line number="126" hits="0"/>
-						<line number="127" hits="0"/>
-						<line number="128" hits="0"/>
-						<line number="131" hits="0"/>
-						<line number="132" hits="0"/>
-						<line number="133" hits="0"/>
-						<line number="134" hits="0"/>
-						<line number="136" hits="0"/>
-						<line number="139" hits="0"/>
-						<line number="140" hits="0"/>
-						<line number="141" hits="0"/>
-						<line number="142" hits="0"/>
-						<line number="144" hits="0"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-		<package name="app" line-rate="1" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="app/__init__.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines/>
-				</class>
-			</classes>
-		</package>
-		<package name="app.integration_tests" line-rate="1" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="app/integration_tests/__init__.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines/>
-				</class>
-				<class name="test_banker.py" filename="app/integration_tests/test_banker.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="5" hits="1"/>
-						<line number="6" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="8" hits="1"/>
-						<line number="9" hits="1"/>
-						<line number="10" hits="1"/>
-						<line number="12" hits="1"/>
-						<line number="13" hits="1"/>
-						<line number="14" hits="1"/>
-						<line number="15" hits="1"/>
-						<line number="16" hits="1"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-		<package name="app.integrator" line-rate="0.9091" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="app/integrator/__init__.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines/>
-				</class>
-				<class name="banker.py" filename="app/integrator/banker.py" complexity="0" line-rate="0.9091" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="3" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="5" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="8" hits="1"/>
-						<line number="10" hits="1"/>
-						<line number="11" hits="1"/>
-						<line number="13" hits="1"/>
-						<line number="14" hits="0"/>
-						<line number="16" hits="1"/>
-						<line number="17" hits="1"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-		<package name="app.splitter" line-rate="0.9231" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="app/splitter/__init__.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines/>
-				</class>
-				<class name="split.py" filename="app/splitter/split.py" complexity="0" line-rate="0.8333" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="2" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="5" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="8" hits="0"/>
-					</lines>
-				</class>
-				<class name="test_split.py" filename="app/splitter/test_split.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="3" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="5" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="8" hits="1"/>
-						<line number="9" hits="1"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-		<package name="app.tools" line-rate="0.8" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="app/tools/__init__.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines/>
-				</class>
-				<class name="calculator.py" filename="app/tools/calculator.py" complexity="0" line-rate="0.7407" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="3" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="6" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="9" hits="1"/>
-						<line number="10" hits="1"/>
-						<line number="12" hits="1"/>
-						<line number="13" hits="1"/>
-						<line number="14" hits="0"/>
-						<line number="15" hits="1"/>
-						<line number="17" hits="1"/>
-						<line number="18" hits="1"/>
-						<line number="20" hits="1"/>
-						<line number="21" hits="0"/>
-						<line number="22" hits="0"/>
-						<line number="23" hits="0"/>
-						<line number="25" hits="1"/>
-						<line number="26" hits="1"/>
-						<line number="28" hits="1"/>
-						<line number="29" hits="0"/>
-						<line number="31" hits="1"/>
-						<line number="32" hits="1"/>
-						<line number="34" hits="1"/>
-						<line number="35" hits="0"/>
-						<line number="37" hits="1"/>
-						<line number="38" hits="0"/>
-					</lines>
-				</class>
-				<class name="dictionary.py" filename="app/tools/dictionary.py" complexity="0" line-rate="0.9231" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="3" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="6" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="9" hits="1"/>
-						<line number="10" hits="1"/>
-						<line number="12" hits="1"/>
-						<line number="13" hits="0"/>
-						<line number="15" hits="1"/>
-						<line number="16" hits="1"/>
-						<line number="18" hits="1"/>
-						<line number="19" hits="1"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-		<package name="app.unit_tests" line-rate="1" branch-rate="0" complexity="0">
-			<classes>
-				<class name="__init__.py" filename="app/unit_tests/__init__.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines/>
-				</class>
-				<class name="test_calculator.py" filename="app/unit_tests/test_calculator.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="5" hits="1"/>
-						<line number="6" hits="1"/>
-						<line number="7" hits="1"/>
-						<line number="8" hits="1"/>
-						<line number="9" hits="1"/>
-						<line number="11" hits="1"/>
-						<line number="12" hits="1"/>
-						<line number="13" hits="1"/>
-						<line number="14" hits="1"/>
-						<line number="15" hits="1"/>
-						<line number="16" hits="1"/>
-						<line number="17" hits="1"/>
-						<line number="19" hits="1"/>
-						<line number="20" hits="1"/>
-						<line number="21" hits="1"/>
-						<line number="22" hits="1"/>
-						<line number="23" hits="1"/>
-						<line number="24" hits="1"/>
-						<line number="26" hits="1"/>
-						<line number="28" hits="1"/>
-						<line number="29" hits="1"/>
-						<line number="30" hits="1"/>
-						<line number="33" hits="1"/>
-						<line number="34" hits="1"/>
-						<line number="35" hits="1"/>
-						<line number="37" hits="1"/>
-						<line number="38" hits="1"/>
-						<line number="40" hits="1"/>
-						<line number="41" hits="1"/>
-					</lines>
-				</class>
-				<class name="test_dictionary.py" filename="app/unit_tests/test_dictionary.py" complexity="0" line-rate="1" branch-rate="0">
-					<methods/>
-					<lines>
-						<line number="1" hits="1"/>
-						<line number="4" hits="1"/>
-						<line number="5" hits="1"/>
-						<line number="8" hits="1"/>
-						<line number="9" hits="1"/>
-						<line number="11" hits="1"/>
-						<line number="12" hits="1"/>
-						<line number="14" hits="1"/>
-						<line number="15" hits="1"/>
-						<line number="17" hits="1"/>
-						<line number="18" hits="1"/>
-					</lines>
-				</class>
-			</classes>
-		</package>
-	</packages>
-</coverage>