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+# System Architecture
+
+```mermaid
+graph TD
+    A[README.md] --> B[SECURITY_REPORT.md]
+    B --> C[Dockerfile]
+    C --> D[pom.xml]
+    D --> E[src/main/java]
+    E --> F[PaymentTrackerApplication.java]
+    F --> G[PaymentController.java]
+    G --> H[Payment.java]
+    H --> I[PaymentService.java]
+    I --> J[src/main/resources]
+    J --> K[application.properties]
+    K --> L[src/test/java]
+    L --> M[PaymentTrackerApplicationTests.java]
+    M --> N[mvnw]
+    N --> O[mvnw.cmd]
+    P[.gitattributes] --> Q[.gitignore]
+    Q --> R[.mvn]
+    R --> S[.mvn/wrapper]
+    S --> T[maven-wrapper.properties]
+```
+
+> Generated by AppGenius Sentinel
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