Added flowchart diagram

flowchart.md

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+graph TD
+    subgraph User_Interface[User Interface - Gradio]
+        UI_AppPy["app.py (Gradio UI)"]
+        UI_Uploads["Image/Form Uploads (Receipts, Child Fee, Medical)"]
+        UI_Inputs["User Inputs (Employee Details, etc.)"]
+        UI_Outputs["Processed Info / Filled PDFs"]
+    end
+
+    subgraph Processing_Pipeline[Processing Pipeline]
+        P_PipelinePy["pipeline.py"]
+        P_OpenAI["OpenAI GPT-4o (Image to Text & Structured Data Extraction)"]
+        P_ModelsPy["models.py (Pydantic Data Models)"]
+        P_FormFillPy["form_fill.py (PDF Population)"]
+        P_FraudPy["fraud.py (Fraud Detection)"]
+        P_DataJson["data.json (Storage for Processed Receipts)"]
+        P_TemplatesDir["templates/ (PDF Templates)"]
+        P_OutputsDir["outputs/ (Generated PDFs)"]
+    end
+
+    UI_AppPy --> P_PipelinePy;
+
+    UI_Uploads --> P_PipelinePy;
+    UI_Inputs -- Employee Data etc. --> P_PipelinePy;
+    P_PipelinePy -- Extracted Info / PDF Paths --> UI_Outputs;
+
+    P_PipelinePy -- Sends Image Data --> P_OpenAI;
+    P_OpenAI -- Returns Structured JSON --> P_PipelinePy;
+    P_PipelinePy -- Validates/Uses --> P_ModelsPy;
+    P_PipelinePy -- Sends Data for PDF --> P_FormFillPy;
+    P_FormFillPy -- Uses PDF Templates from --> P_TemplatesDir;
+    P_FormFillPy -- Saves Filled PDF to --> P_OutputsDir;
+    P_PipelinePy -- Sends Receipt Data for Fraud Check --> P_FraudPy;
+    P_FraudPy -- Loads/Saves Receipt Data --> P_DataJson;
+    P_FraudPy -- Returns Fraud Status --> P_PipelinePy;
+
+    P_TemplatesDir -.-> P_FormFillPy;
+    P_OutputsDir <-.- P_FormFillPy;
+    P_DataJson -.-> P_FraudPy;
+
+    %% Styling
+    classDef ui fill:#D6EAF8,stroke:#3498DB,stroke-width:2px;
+    classDef process fill:#D5F5E3,stroke:#2ECC71,stroke-width:2px;
+    classDef external fill:#FCF3CF,stroke:#F1C40F,stroke-width:2px;
+    classDef storage fill:#EBDEF0,stroke:#8E44AD,stroke-width:2px;
+
+    class UI_AppPy,UI_Uploads,UI_Inputs,UI_Outputs ui;
+    class P_PipelinePy,P_ModelsPy,P_FormFillPy,P_FraudPy process;
+    class P_OpenAI external;
+    class P_DataJson,P_TemplatesDir,P_OutputsDir storage;