merge

.gitignore

@@ -11,7 +11,7 @@ dist/
 downloads/
 eggs/
 .eggs/
-lib/
+
 lib64/
 parts/
 sdist/
@@ -48,9 +48,11 @@ Thumbs.db
 # Streamlit
 .streamlit/secrets.toml
 
-# Reports
+# Reports and generated files
 reports/*.json
 reports/*.pdf
+reports/*.csv
+reports/*.html
 
 # Logs
 *.log
@@ -59,4 +61,17 @@ reports/*.pdf
 *.csv
 !Datasets/loan_data.csv
 
+# Node.js & Next.js
+node_modules/
+.next/
+out/
+.vercel
+*.tsbuildinfo
+next-env.d.ts
+
+# Frontend build artifacts
+frontend/nordic-privacy-ai/.next/
+frontend/nordic-privacy-ai/out/
+frontend/nordic-privacy-ai/node_modules/
+
 Data

ai_governance/data_processor.py

@@ -21,6 +21,7 @@ class DataProcessor:
         self.categorical_features = []
         self.feature_names = []
         self.encoders = {}
+        self.target_encoder = None  # Add target encoder
         self.scaler = StandardScaler()
         
         self.X_train = None
@@ -75,6 +76,13 @@ class DataProcessor:
         X = self.df[feature_cols].copy()
         y = self.df[self.target_column].copy()
         
+        # Encode target variable if it's categorical
+        if y.dtype == 'object' or y.dtype.name == 'category':
+            self.target_encoder = LabelEncoder()
+            y_encoded = self.target_encoder.fit_transform(y)
+            y = pd.Series(y_encoded, index=y.index)
+            print(f"Target '{self.target_column}' encoded: {dict(enumerate(self.target_encoder.classes_))}")
+        
         # Encode categorical variables
         for col in self.categorical_features:
             if col in X.columns:

api/__init__.py

@@ -0,0 +1 @@
+# Empty __init__.py files for Python package structure

api/main.py

@@ -0,0 +1,72 @@
+"""
+FastAPI Backend for Nordic Privacy AI
+Provides endpoints for AI Governance analysis and data cleaning
+"""
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+import os
+
+from api.routers import analyze, clean
+
+# Create FastAPI app
+app = FastAPI(
+    title="Nordic Privacy AI API",
+    description="AI-powered GDPR compliance, bias detection, and risk analysis",
+    version="1.0.0"
+)
+
+# CORS configuration for Next.js frontend
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[
+        "http://localhost:3000",  # Next.js dev server
+        "http://127.0.0.1:3000",
+    ],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Mount reports directory for file downloads
+reports_dir = os.path.join(os.path.dirname(os.path.dirname(__file__)), "reports")
+os.makedirs(reports_dir, exist_ok=True)
+app.mount("/reports", StaticFiles(directory=reports_dir), name="reports")
+
+# Include routers
+app.include_router(analyze.router, prefix="/api", tags=["AI Governance"])
+app.include_router(clean.router, prefix="/api", tags=["Data Cleaning"])
+
+@app.get("/")
+async def root():
+    """Health check endpoint"""
+    return {
+        "status": "online",
+        "service": "Nordic Privacy AI API",
+        "version": "1.0.0",
+        "endpoints": {
+            "analyze": "/api/analyze",
+            "clean": "/api/clean",
+            "docs": "/docs"
+        }
+    }
+
+@app.get("/health")
+async def health_check():
+    """Detailed health check"""
+    try:
+        import torch
+        cuda_available = torch.cuda.is_available()
+        gpu_name = torch.cuda.get_device_name(0) if cuda_available else None
+    except:
+        cuda_available = False
+        gpu_name = None
+    
+    return {
+        "status": "healthy",
+        "gpu_acceleration": {
+            "available": cuda_available,
+            "device": gpu_name or "CPU"
+        }
+    }

api/routers/__init__.py

@@ -0,0 +1 @@
+# Empty __init__.py files for Python package structure

api/routers/analyze.py

@@ -0,0 +1,141 @@
+"""
+AI Governance Analysis Router
+Handles bias detection and risk analysis endpoints
+"""
+
+from fastapi import APIRouter, File, UploadFile, HTTPException
+from fastapi.responses import JSONResponse
+import pandas as pd
+import numpy as np
+import io
+import os
+import json
+from datetime import datetime
+from typing import Dict, Any
+
+# Import AI Governance modules
+import sys
+sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
+from ai_governance import AIGovernanceAnalyzer
+
+router = APIRouter()
+
+
+def convert_to_serializable(obj):
+    """Convert numpy/pandas types to native Python types for JSON serialization"""
+    if isinstance(obj, (np.integer, np.int64, np.int32)):
+        return int(obj)
+    elif isinstance(obj, (np.floating, np.float64, np.float32)):
+        return float(obj)
+    elif isinstance(obj, np.ndarray):
+        return obj.tolist()
+    elif isinstance(obj, dict):
+        return {key: convert_to_serializable(value) for key, value in obj.items()}
+    elif isinstance(obj, list):
+        return [convert_to_serializable(item) for item in obj]
+    return obj
+
+@router.post("/analyze")
+async def analyze_dataset(file: UploadFile = File(...)):
+    """
+    Analyze uploaded dataset for bias and risk
+    
+    - **file**: CSV file to analyze
+    
+    Returns:
+        - Analysis results (bias metrics, risk assessment)
+        - Report file path for download
+    """
+    
+    # Validate file type
+    if not file.filename.endswith('.csv'):
+        raise HTTPException(status_code=400, detail="Only CSV files are supported")
+    
+    try:
+        # Read uploaded file
+        contents = await file.read()
+        df = pd.read_csv(io.BytesIO(contents))
+        
+        if df.empty:
+            raise HTTPException(status_code=400, detail="Uploaded file is empty")
+        
+        # Initialize AI Governance Analyzer
+        analyzer = AIGovernanceAnalyzer()
+        
+        # Auto-detect target column and protected attributes
+        # Target: Last column (common convention) or first binary/categorical column
+        target_column = df.columns[-1]
+        
+        # Protected attributes: Common sensitive columns
+        protected_keywords = ['gender', 'age', 'race', 'sex', 'ethnicity', 'religion', 'nationality']
+        protected_attributes = [col for col in df.columns 
+                              if any(keyword in col.lower() for keyword in protected_keywords)]
+        
+        # If no protected attributes found, use first few categorical columns
+        if not protected_attributes:
+            categorical_cols = df.select_dtypes(include=['object', 'category']).columns
+            protected_attributes = [col for col in categorical_cols if col != target_column][:3]
+        
+        print(f"Analyzing dataset: {file.filename} ({len(df)} rows, {len(df.columns)} columns)")
+        print(f"Target column: {target_column}")
+        print(f"Protected attributes: {protected_attributes}")
+        
+        # Run analysis
+        report = analyzer.analyze_dataframe(df, target_column, protected_attributes)
+        
+        # Generate report filename
+        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+        safe_filename = (file.filename or "dataset").replace('.csv', '')
+        report_filename = f"governance_report_{safe_filename}_{timestamp}.json"
+        report_path = os.path.join("reports", report_filename)
+        
+        # Save full report to disk
+        full_report_path = os.path.join(
+            os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
+            report_path
+        )
+        analyzer.save_report(report, full_report_path)
+        
+        # Prepare response with summary
+        response_data = {
+            "status": "success",
+            "filename": file.filename,
+            "dataset_info": {
+                "rows": len(df),
+                "columns": len(df.columns),
+                "features": list(df.columns)
+            },
+            "model_performance": {
+                "accuracy": report.get("model_metrics", {}).get("accuracy", 0),
+                "precision": report.get("model_metrics", {}).get("precision", 0),
+                "recall": report.get("model_metrics", {}).get("recall", 0),
+                "f1_score": report.get("model_metrics", {}).get("f1_score", 0)
+            },
+            "bias_metrics": {
+                "overall_bias_score": report.get("bias_metrics", {}).get("overall_bias_score", 0),
+                "disparate_impact": report.get("bias_metrics", {}).get("disparate_impact", {}),
+                "statistical_parity": report.get("bias_metrics", {}).get("statistical_parity_difference", {}),
+                "violations_detected": report.get("bias_metrics", {}).get("fairness_violations", [])
+            },
+            "risk_assessment": {
+                "overall_risk_score": report.get("risk_metrics", {}).get("overall_risk_score", 0),
+                "privacy_risks": report.get("risk_metrics", {}).get("privacy_risks", []),
+                "ethical_risks": report.get("risk_metrics", {}).get("ethical_risks", []),
+                "compliance_risks": report.get("risk_metrics", {}).get("compliance_risks", []),
+                "data_quality_risks": report.get("risk_metrics", {}).get("data_quality_risks", [])
+            },
+            "recommendations": report.get("recommendations", []),
+            "report_file": f"/{report_path}",
+            "timestamp": datetime.now().isoformat()
+        }
+        
+        # Convert all numpy/pandas types to native Python types
+        response_data = convert_to_serializable(response_data)
+        
+        return JSONResponse(content=response_data)
+        
+    except pd.errors.EmptyDataError:
+        raise HTTPException(status_code=400, detail="File is empty or invalid CSV format")
+    except Exception as e:
+        print(f"Error during analysis: {str(e)}")
+        raise HTTPException(status_code=500, detail=f"Analysis failed: {str(e)}")

api/routers/clean.py

@@ -0,0 +1,142 @@
+"""
+Data Cleaning Router
+Handles PII detection and anonymization endpoints
+"""
+
+from fastapi import APIRouter, File, UploadFile, HTTPException
+from fastapi.responses import JSONResponse
+import pandas as pd
+import numpy as np
+import io
+import os
+from datetime import datetime
+from typing import Dict, Any
+
+# Import cleaning module
+import sys
+sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
+from data_cleaning import DataCleaner
+
+router = APIRouter()
+
+
+def convert_to_serializable(obj):
+    """Convert numpy/pandas types to native Python types for JSON serialization"""
+    if isinstance(obj, (np.integer, np.int64, np.int32)):
+        return int(obj)
+    elif isinstance(obj, (np.floating, np.float64, np.float32)):
+        return float(obj)
+    elif isinstance(obj, np.ndarray):
+        return obj.tolist()
+    elif isinstance(obj, dict):
+        return {key: convert_to_serializable(value) for key, value in obj.items()}
+    elif isinstance(obj, list):
+        return [convert_to_serializable(item) for item in obj]
+    return obj
+
+
+@router.post("/clean")
+async def clean_dataset(file: UploadFile = File(...)):
+    """
+    Clean uploaded dataset - detect and anonymize PII
+    
+    - **file**: CSV file to clean
+    
+    Returns:
+        - Cleaned dataset statistics
+        - PII detections and anonymization actions
+        - Report file path for download
+        - Cleaned CSV file path for download
+    """
+    
+    # Validate file type
+    if not file.filename.endswith('.csv'):
+        raise HTTPException(status_code=400, detail="Only CSV files are supported")
+    
+    try:
+        # Read uploaded file
+        contents = await file.read()
+        df = pd.read_csv(io.BytesIO(contents))
+        
+        if df.empty:
+            raise HTTPException(status_code=400, detail="Uploaded file is empty")
+        
+        # Initialize Data Cleaner (with GPU if available)
+        print(f"Cleaning dataset: {file.filename} ({len(df)} rows, {len(df.columns)} columns)")
+        cleaner = DataCleaner(df, use_gpu=True)
+        
+        # Run cleaning (non-interactive mode for API)
+        cleaned_df, audit_report = cleaner.clean(
+            risky_features=None,  # Auto-detect
+            interactive=False,    # No user prompts in API mode
+            scan_all_cells=True
+        )
+        
+        # Generate filenames
+        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+        safe_filename = file.filename.replace('.csv', '')
+        
+        # Save cleaned CSV
+        cleaned_csv_filename = f"cleaned_{safe_filename}_{timestamp}.csv"
+        cleaned_csv_path = os.path.join("reports", cleaned_csv_filename)
+        full_cleaned_csv_path = os.path.join(
+            os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
+            cleaned_csv_path
+        )
+        cleaner.save_cleaned_data(cleaned_df, full_cleaned_csv_path)
+        
+        # Save audit report
+        audit_report_filename = f"cleaning_audit_{safe_filename}_{timestamp}.json"
+        audit_report_path = os.path.join("reports", audit_report_filename)
+        full_audit_report_path = os.path.join(
+            os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
+            audit_report_path
+        )
+        cleaner.save_audit_report(audit_report, full_audit_report_path)
+        
+        # Prepare response
+        response_data = {
+            "status": "success",
+            "filename": file.filename,
+            "dataset_info": {
+                "original_rows": int(audit_report["metadata"]["original_rows"]),
+                "original_columns": int(audit_report["metadata"]["original_columns"]),
+                "cleaned_rows": int(audit_report["metadata"]["cleaned_rows"]),
+                "cleaned_columns": int(audit_report["metadata"]["cleaned_columns"])
+            },
+            "gpu_acceleration": audit_report["metadata"].get("gpu_acceleration", {
+                "enabled": False,
+                "device": "CPU"
+            }),
+            "summary": {
+                "columns_removed": audit_report["summary"]["columns_removed"],
+                "columns_anonymized": audit_report["summary"]["columns_anonymized"],
+                "total_cells_affected": int(audit_report["summary"]["total_cells_affected"])
+            },
+            "pii_detections": {
+                col: {
+                    "action": details["action"],
+                    "entity_types": details["entity_types_found"],
+                    "num_affected_rows": int(details.get("num_affected_rows", 0)),
+                    "examples": details.get("examples", [])[:2]  # Show 2 examples
+                }
+                for col, details in audit_report["details"].items()
+            },
+            "gdpr_compliance": audit_report["compliance"]["gdpr_articles_applied"],
+            "files": {
+                "cleaned_csv": f"/{cleaned_csv_path}",
+                "audit_report": f"/{audit_report_path}"
+            },
+            "timestamp": datetime.now().isoformat()
+        }
+        
+        # Convert all numpy/pandas types to native Python types
+        response_data = convert_to_serializable(response_data)
+        
+        return JSONResponse(content=response_data)
+        
+    except pd.errors.EmptyDataError:
+        raise HTTPException(status_code=400, detail="File is empty or invalid CSV format")
+    except Exception as e:
+        print(f"Error during cleaning: {str(e)}")
+        raise HTTPException(status_code=500, detail=f"Cleaning failed: {str(e)}")

api/utils/__init__.py

@@ -0,0 +1 @@
+# Empty __init__.py files for Python package structure

data_cleaning/__init__.py

@@ -0,0 +1,12 @@
+"""
+Data Cleaning Module
+Automated PII detection and GDPR-compliant anonymization
+"""
+
+from .cleaner import DataCleaner
+
+__version__ = '1.0.0'
+
+__all__ = [
+    'DataCleaner'
+]

frontend/app/try/page.tsx

@@ -14,7 +14,7 @@ export default function TryPage() {
       <div className="flex flex-1 min-h-0">
         <Sidebar value={tab} onChange={setTab} />
         <div className="flex-1 min-h-0 flex">
-          <div className="flex-1 min-h-0"><CenterPanel tab={tab} /></div>
+          <div className="flex-1 min-h-0 min-w-0"><CenterPanel tab={tab} onAnalyze={() => setTab("bias-analysis")} /></div>
           <div className="w-[360px] hidden xl:block"><ChatbotPanel /></div>
         </div>
       </div>

frontend/components/try/CenterPanel.tsx

@@ -0,0 +1,620 @@
+"use client";
+import { TryTab } from "./Sidebar";
+import { useState, useRef, useCallback, useEffect } from "react";
+import { saveLatestUpload, getLatestUpload, deleteLatestUpload } from "../../lib/indexeddb";
+import { analyzeDataset, cleanDataset, getReportUrl, type AnalyzeResponse, type CleanResponse } from "../../lib/api";
+
+interface CenterPanelProps {
+	tab: TryTab;
+	onAnalyze?: () => void;
+}
+
+interface UploadedFileMeta {
+	name: string;
+	size: number;
+	type: string;
+	contentPreview: string;
+}
+
+interface TablePreviewData {
+	headers: string[];
+	rows: string[][];
+	origin: 'csv';
+}
+
+export function CenterPanel({ tab, onAnalyze }: CenterPanelProps) {
+	const PREVIEW_BYTES = 64 * 1024; // read first 64KB slice for large-file preview
+	const [fileMeta, setFileMeta] = useState<UploadedFileMeta | null>(null);
+	const [uploadedFile, setUploadedFile] = useState<File | null>(null);
+	const [isDragging, setIsDragging] = useState(false);
+	const [progress, setProgress] = useState<number>(0);
+	const [progressLabel, setProgressLabel] = useState<string>("Processing");
+	const [tablePreview, setTablePreview] = useState<TablePreviewData | null>(null);
+	const inputRef = useRef<HTMLInputElement | null>(null);
+	const [loadedFromCache, setLoadedFromCache] = useState(false);
+	const [isProcessing, setIsProcessing] = useState(false);
+	const [error, setError] = useState<string | null>(null);
+	
+	// Analysis results
+	const [analyzeResult, setAnalyzeResult] = useState<AnalyzeResponse | null>(null);
+	const [cleanResult, setCleanResult] = useState<CleanResponse | null>(null);
+
+	const reset = () => {
+		setFileMeta(null);
+		setUploadedFile(null);
+		setProgress(0);
+		setProgressLabel("Processing");
+		setTablePreview(null);
+		setError(null);
+	};
+
+	// Handle API calls
+	const handleAnalyze = async () => {
+		if (!uploadedFile) {
+			setError("No file uploaded");
+			return;
+		}
+		
+		setIsProcessing(true);
+		setError(null);
+		setProgressLabel("Analyzing dataset...");
+		
+		try {
+			const result = await analyzeDataset(uploadedFile);
+			setAnalyzeResult(result);
+			setProgressLabel("Analysis complete!");
+			onAnalyze?.(); // Navigate to bias-analysis tab
+		} catch (err: any) {
+			setError(err.message || "Analysis failed");
+		} finally {
+			setIsProcessing(false);
+		}
+	};
+
+	const handleClean = async () => {
+		if (!uploadedFile) {
+			setError("No file uploaded");
+			return;
+		}
+		
+		setIsProcessing(true);
+		setError(null);
+		setProgressLabel("Cleaning dataset...");
+		
+		try {
+			const result = await cleanDataset(uploadedFile);
+			setCleanResult(result);
+			setProgressLabel("Cleaning complete!");
+		} catch (err: any) {
+			setError(err.message || "Cleaning failed");
+		} finally {
+			setIsProcessing(false);
+		}
+	};		function tryParseCSV(text: string, maxRows = 50, maxCols = 40): TablePreviewData | null {
+			const lines = text.split(/\r?\n/).filter(l => l.trim().length > 0);
+			if (lines.length < 2) return null;
+			const commaDensity = lines.slice(0, 10).filter(l => l.includes(',')).length;
+			if (commaDensity < 2) return null;
+			const parseLine = (line: string) => {
+				const out: string[] = [];
+				let cur = '';
+				let inQuotes = false;
+				for (let i = 0; i < line.length; i++) {
+					const ch = line[i];
+					if (ch === '"') {
+						if (inQuotes && line[i + 1] === '"') { cur += '"'; i++; } else { inQuotes = !inQuotes; }
+					} else if (ch === ',' && !inQuotes) {
+						out.push(cur);
+						cur = '';
+					} else { cur += ch; }
+				}
+				out.push(cur);
+				return out.map(c => c.trim());
+			};
+			const raw = lines.slice(0, maxRows).map(parseLine);
+			if (raw.length === 0) return null;
+			const headers = raw[0];
+			const colCount = Math.min(headers.length, maxCols);
+			const rows = raw.slice(1).map(r => r.slice(0, colCount));
+			return { headers: headers.slice(0, colCount), rows, origin: 'csv' };
+		}
+
+		// We no longer build table preview for JSON; revert JSON to raw text view.
+
+	const processFile = useCallback(async (f: File) => {
+		if (!f) return;
+		const isCSV = /\.csv$/i.test(f.name);
+		setProgress(0);
+		setUploadedFile(f); // Save the file for API calls
+		
+		// For large files, show a progress bar while reading the file stream (no preview)
+		if (f.size > 1024 * 1024) {
+				setProgressLabel("Uploading");
+				const metaObj: UploadedFileMeta = {
+					name: f.name,
+					size: f.size,
+					type: f.type || "unknown",
+					contentPreview: `Loading partial preview (first ${Math.round(PREVIEW_BYTES/1024)}KB)...`,
+				};
+				setFileMeta(metaObj);
+				setTablePreview(null);
+				// Save to IndexedDB immediately so it persists without needing full read
+				(async () => {
+					try { await saveLatestUpload(f, metaObj); } catch {}
+				})();
+				// Read head slice for partial preview & possible CSV table extraction
+				try {
+					const headBlob = f.slice(0, PREVIEW_BYTES);
+					const headReader = new FileReader();
+					headReader.onload = async () => {
+						try {
+							const buf = headReader.result as ArrayBuffer;
+							const decoder = new TextDecoder();
+							const text = decoder.decode(buf);
+							setFileMeta(prev => prev ? { ...prev, contentPreview: text.slice(0, 4000) } : prev);
+							if (isCSV) {
+								const parsed = tryParseCSV(text);
+								setTablePreview(parsed);
+							} else {
+								setTablePreview(null);
+							}
+							try { await saveLatestUpload(f, { ...metaObj, contentPreview: text.slice(0, 4000) }); } catch {}
+						} catch { /* ignore */ }
+					};
+					headReader.readAsArrayBuffer(headBlob);
+				} catch { /* ignore */ }
+				// Use streaming read for progress without buffering entire file in memory
+				try {
+					const stream: ReadableStream<Uint8Array> | undefined = (typeof (f as any).stream === "function" ? (f as any).stream() : undefined);
+					if (stream && typeof stream.getReader === "function") {
+						const reader = stream.getReader();
+						let loaded = 0;
+						const total = f.size || 1;
+						for (;;) {
+							const { done, value } = await reader.read();
+							if (done) break;
+							loaded += value ? value.length : 0;
+							const pct = Math.min(100, Math.round((loaded / total) * 100));
+							setProgress(pct);
+						}
+						setProgress(100);
+					} else {
+						// Fallback to FileReader progress events
+						const reader = new FileReader();
+						reader.onprogress = (evt) => {
+							if (evt.lengthComputable) {
+								const pct = Math.min(100, Math.round((evt.loaded / evt.total) * 100));
+								setProgress(pct);
+							} else {
+								setProgress((p) => (p < 90 ? p + 5 : p));
+							}
+						};
+						reader.onloadend = () => setProgress(100);
+						reader.onerror = () => setProgress(0);
+						reader.readAsArrayBuffer(f);
+					}
+				} catch {
+					setProgress(100);
+				}
+				return;
+			}
+			const reader = new FileReader();
+			reader.onprogress = (evt) => {
+				if (evt.lengthComputable) {
+					const pct = Math.min(100, Math.round((evt.loaded / evt.total) * 100));
+					setProgress(pct);
+				} else {
+					setProgress((p) => (p < 90 ? p + 5 : p));
+				}
+			};
+				reader.onload = async () => {
+				try {
+					const buf = reader.result as ArrayBuffer;
+					const decoder = new TextDecoder();
+					const text = decoder.decode(buf);
+						const metaObj: UploadedFileMeta = {
+						name: f.name,
+						size: f.size,
+						type: f.type || "unknown",
+						contentPreview: text.slice(0, 4000),
+						};
+						setFileMeta(metaObj);
+						if (isCSV) {
+							const parsed = tryParseCSV(text);
+							setTablePreview(parsed);
+						} else {
+							setTablePreview(null);
+						}
+						// Save file blob and meta to browser cache (IndexedDB)
+						try {
+							await saveLatestUpload(f, metaObj);
+						} catch {}
+					setProgressLabel("Processing");
+					setProgress(100);
+				} catch (e) {
+						const metaObj: UploadedFileMeta = {
+						name: f.name,
+						size: f.size,
+						type: f.type || "unknown",
+						contentPreview: "Unable to decode preview.",
+						};
+						setFileMeta(metaObj);
+						setTablePreview(null);
+						try {
+							await saveLatestUpload(f, metaObj);
+						} catch {}
+					setProgressLabel("Processing");
+					setProgress(100);
+				}
+			};
+			reader.onerror = () => {
+				setProgress(0);
+			};
+			reader.readAsArrayBuffer(f);
+		}, []);
+
+		function handleFileChange(e: React.ChangeEvent<HTMLInputElement>) {
+			const f = e.target.files?.[0];
+			processFile(f as File);
+		}
+
+		const onDragOver = (e: React.DragEvent<HTMLDivElement>) => {
+			e.preventDefault();
+			setIsDragging(true);
+		};
+		const onDragLeave = () => setIsDragging(false);
+		const onDrop = (e: React.DragEvent<HTMLDivElement>) => {
+			e.preventDefault();
+			setIsDragging(false);
+			const f = e.dataTransfer.files?.[0];
+			processFile(f as File);
+		};
+
+	// Load last cached upload on mount (processing tab only)
+	useEffect(() => {
+		let ignore = false;
+		if (tab !== "processing") return;
+		(async () => {
+			try {
+				const { file, meta } = await getLatestUpload();
+				if (!ignore && meta) {
+					setFileMeta(meta as UploadedFileMeta);
+					if (file) {
+						setUploadedFile(file);
+					}
+					setLoadedFromCache(true);
+				}
+			} catch {}
+		})();
+		return () => {
+			ignore = true;
+		};
+	}, [tab]);	function renderTabContent() {
+			switch (tab) {
+			case "processing":
+					return (
+						<div className="space-y-4 max-w-[1100px] xl:max-w-[1200px] w-full mx-auto">
+						<h2 className="text-xl font-semibold">Upload & Process Data</h2>
+						<p className="text-sm text-slate-600">Upload a CSV / JSON / text file. We will later parse, detect PII, and queue analyses.</p>
+									<div className="flex flex-col gap-3 min-w-0">
+										<div
+											onDragOver={onDragOver}
+											onDragLeave={onDragLeave}
+											onDrop={onDrop}
+											className={
+												"rounded-lg border-2 border-dashed p-6 text-center transition-colors " +
+												(isDragging ? "border-brand-600 bg-brand-50" : "border-slate-300 hover:border-brand-300")
+											}
+										>
+											<p className="text-sm text-slate-600">Drag & drop a CSV / JSON / TXT here, or click to browse.</p>
+											<div className="mt-3">
+												<button
+													type="button"
+													onClick={() => inputRef.current?.click()}
+													className="inline-flex items-center rounded-md bg-brand-600 px-4 py-2 text-white text-sm font-medium shadow hover:bg-brand-500"
+												>
+													Choose file
+												</button>
+											</div>
+										</div>
+										<input
+								ref={inputRef}
+								type="file"
+								accept=".csv,.json,.txt"
+								onChange={handleFileChange}
+								className="hidden"
+								aria-hidden
+							/>
+										{progress > 0 && (
+											<div className="w-full">
+												<div className="h-2 w-full rounded-full bg-slate-200 overflow-hidden">
+													<div
+														className="h-2 bg-brand-600 transition-all"
+														style={{ width: `${progress}%` }}
+													/>
+												</div>
+												<div className="mt-1 text-xs text-slate-500">{progressLabel} {progress}%</div>
+											</div>
+										)}
+											{fileMeta && (
+								<div className="rounded-md border border-slate-200 p-4 bg-white shadow-sm">
+									<div className="flex items-center justify-between mb-2">
+										<div className="text-sm font-medium">{fileMeta.name}</div>
+										<div className="text-xs text-slate-500">{Math.round(fileMeta.size / 1024)} KB</div>
+									</div>
+													{loadedFromCache && (
+														<div className="mb-2 text-[11px] text-brand-700">Loaded from browser cache</div>
+													)}
+												<div className="mb-3 text-xs text-slate-500">{fileMeta.type || "Unknown type"}</div>
+												{/* Table preview when structured data detected; otherwise show text */}
+												{tablePreview && tablePreview.origin === 'csv' ? (
+													<div className="max-h-64 w-full min-w-0 overflow-x-auto overflow-y-auto rounded-md bg-slate-50">
+														<table className="min-w-full text-xs">
+															<thead className="sticky top-0 bg-slate-100">
+																<tr>
+																	{tablePreview.headers.map((h, idx) => (
+																		<th key={idx} className="text-left font-semibold px-3 py-2 border-b border-slate-200 whitespace-nowrap">{h}</th>
+																	))}
+																</tr>
+															</thead>
+															<tbody>
+																{tablePreview.rows.map((r, i) => (
+																	<tr key={i} className={i % 2 === 0 ? "" : "bg-slate-100/50"}>
+																		{r.map((c, j) => (
+																			<td key={j} className="px-3 py-1.5 border-b border-slate-100 whitespace-nowrap max-w-[24ch] overflow-hidden text-ellipsis">{c}</td>
+																		))}
+																	</tr>
+																))}
+															</tbody>
+														</table>
+													</div>
+												) : (
+													<pre className="max-h-64 overflow-auto text-xs bg-slate-50 p-3 rounded-md whitespace-pre-wrap leading-relaxed">
+														{fileMeta.contentPreview || "(no preview)"}
+													</pre>
+												)}
+												
+												{error && (
+													<div className="mt-3 p-3 bg-red-50 border border-red-200 rounded-md text-sm text-red-700">
+														❌ {error}
+													</div>
+												)}
+												
+												{analyzeResult && (
+													<div className="mt-3 p-3 bg-green-50 border border-green-200 rounded-md text-sm text-green-700">
+														✅ Analysis complete! View results in tabs.
+														<a
+															href={getReportUrl(analyzeResult.report_file)}
+															target="_blank"
+															rel="noopener noreferrer"
+															className="ml-2 underline"
+														>
+															Download Report
+														</a>
+													</div>
+												)}
+												
+												{cleanResult && (
+													<div className="mt-3 p-3 bg-green-50 border border-green-200 rounded-md text-sm text-green-700">
+														✅ Cleaning complete! {cleanResult.summary.total_cells_affected} cells anonymized.
+														<div className="mt-2 flex gap-2">
+															<a
+																href={getReportUrl(cleanResult.files.cleaned_csv)}
+																download
+																className="underline"
+															>
+																Download Cleaned CSV
+															</a>
+															<a
+																href={getReportUrl(cleanResult.files.audit_report)}
+																target="_blank"
+																rel="noopener noreferrer"
+																className="underline"
+															>
+																View Audit Report
+															</a>
+														</div>
+													</div>
+												)}
+												
+												<div className="mt-3 flex justify-end gap-2">
+													<button
+														type="button"
+															onClick={async () => {
+																reset();
+																try { await deleteLatestUpload(); } catch {}
+																setLoadedFromCache(false);
+																setAnalyzeResult(null);
+																setCleanResult(null);
+															}}
+														className="text-xs rounded-md border px-3 py-1.5 hover:bg-slate-50"
+													>
+														Clear
+													</button>
+													<button
+														type="button"
+														onClick={handleClean}
+														disabled={isProcessing}
+														className="text-xs rounded-md bg-green-600 text-white px-3 py-1.5 hover:bg-green-500 disabled:opacity-50 disabled:cursor-not-allowed"
+													>
+														{isProcessing ? "Processing..." : "Clean (PII)"}
+													</button>
+													<button
+														type="button"
+														onClick={handleAnalyze}
+														disabled={isProcessing}
+														className="text-xs rounded-md bg-brand-600 text-white px-3 py-1.5 hover:bg-brand-500 disabled:opacity-50 disabled:cursor-not-allowed"
+													>
+														{isProcessing ? "Processing..." : "Analyze"}
+													</button>
+												</div>
+								</div>
+							)}
+						</div>
+					</div>
+				);
+			case "bias-analysis":
+				return (
+					<div className="space-y-4">
+						<h2 className="text-xl font-semibold">Bias Analysis</h2>
+						{analyzeResult ? (
+							<div className="space-y-4">
+								<div className="grid grid-cols-2 gap-4">
+									<div className="p-4 bg-white rounded-lg border">
+										<div className="text-sm text-slate-600">Overall Bias Score</div>
+										<div className="text-2xl font-bold">{(analyzeResult.bias_metrics.overall_bias_score * 100).toFixed(1)}%</div>
+									</div>
+									<div className="p-4 bg-white rounded-lg border">
+										<div className="text-sm text-slate-600">Violations Detected</div>
+										<div className="text-2xl font-bold">{analyzeResult.bias_metrics.violations_detected.length}</div>
+									</div>
+								</div>
+								
+								<div className="p-4 bg-white rounded-lg border">
+									<h3 className="font-semibold mb-2">Model Performance</h3>
+									<div className="grid grid-cols-4 gap-2 text-sm">
+										<div>
+											<div className="text-slate-600">Accuracy</div>
+											<div className="font-medium">{(analyzeResult.model_performance.accuracy * 100).toFixed(1)}%</div>
+										</div>
+										<div>
+											<div className="text-slate-600">Precision</div>
+											<div className="font-medium">{(analyzeResult.model_performance.precision * 100).toFixed(1)}%</div>
+										</div>
+										<div>
+											<div className="text-slate-600">Recall</div>
+											<div className="font-medium">{(analyzeResult.model_performance.recall * 100).toFixed(1)}%</div>
+										</div>
+										<div>
+											<div className="text-slate-600">F1 Score</div>
+											<div className="font-medium">{(analyzeResult.model_performance.f1_score * 100).toFixed(1)}%</div>
+										</div>
+									</div>
+								</div>
+							</div>
+						) : (
+							<p className="text-sm text-slate-600">Upload and analyze a dataset to see bias metrics.</p>
+						)}
+					</div>
+				);
+			case "risk-analysis":
+				return (
+					<div className="space-y-4">
+						<h2 className="text-xl font-semibold">Risk Analysis</h2>
+						{analyzeResult ? (
+							<div className="space-y-4">
+								<div className="p-4 bg-white rounded-lg border">
+									<div className="text-sm text-slate-600">Overall Risk Score</div>
+									<div className="text-2xl font-bold">{(analyzeResult.risk_assessment.overall_risk_score * 100).toFixed(1)}%</div>
+								</div>
+								
+								{cleanResult && (
+									<div className="p-4 bg-white rounded-lg border">
+										<h3 className="font-semibold mb-2">PII Detection Results</h3>
+										<div className="text-sm space-y-1">
+											<div>Cells Anonymized: <span className="font-medium">{cleanResult.summary.total_cells_affected}</span></div>
+											<div>Columns Removed: <span className="font-medium">{cleanResult.summary.columns_removed.length}</span></div>
+											<div>Columns Anonymized: <span className="font-medium">{cleanResult.summary.columns_anonymized.length}</span></div>
+										</div>
+									</div>
+								)}
+							</div>
+						) : (
+							<p className="text-sm text-slate-600">Upload and analyze a dataset to see risk assessment.</p>
+						)}
+					</div>
+				);
+			case "bias-risk-mitigation":
+				return (
+					<div className="space-y-4">
+						<h2 className="text-xl font-semibold">Mitigation Suggestions</h2>
+						{analyzeResult && analyzeResult.recommendations.length > 0 ? (
+							<div className="space-y-2">
+								{analyzeResult.recommendations.map((rec, i) => (
+									<div key={i} className="p-3 bg-blue-50 border border-blue-200 rounded-md text-sm">
+										{rec}
+									</div>
+								))}
+							</div>
+						) : (
+							<p className="text-sm text-slate-600">
+								Recommendations will appear here after analysis.
+							</p>
+						)}
+					</div>
+				);
+			case "results":
+				return (
+					<div className="space-y-4">
+						<h2 className="text-xl font-semibold">Results Summary</h2>
+						{(analyzeResult || cleanResult) ? (
+							<div className="space-y-4">
+								{analyzeResult && (
+									<div className="p-4 bg-white rounded-lg border">
+										<h3 className="font-semibold mb-2">Analysis Results</h3>
+										<div className="text-sm space-y-1">
+											<div>Dataset: {analyzeResult.filename}</div>
+											<div>Rows: {analyzeResult.dataset_info.rows}</div>
+											<div>Columns: {analyzeResult.dataset_info.columns}</div>
+											<div>Bias Score: {(analyzeResult.bias_metrics.overall_bias_score * 100).toFixed(1)}%</div>
+											<div>Risk Score: {(analyzeResult.risk_assessment.overall_risk_score * 100).toFixed(1)}%</div>
+										</div>
+										<a
+											href={getReportUrl(analyzeResult.report_file)}
+											target="_blank"
+											rel="noopener noreferrer"
+											className="mt-3 inline-block text-sm text-brand-600 underline"
+										>
+											Download Full Report →
+										</a>
+									</div>
+								)}
+								
+								{cleanResult && (
+									<div className="p-4 bg-white rounded-lg border">
+										<h3 className="font-semibold mb-2">Cleaning Results</h3>
+										<div className="text-sm space-y-1">
+											<div>Original: {cleanResult.dataset_info.original_rows} rows × {cleanResult.dataset_info.original_columns} cols</div>
+											<div>Cleaned: {cleanResult.dataset_info.cleaned_rows} rows × {cleanResult.dataset_info.cleaned_columns} cols</div>
+											<div>Cells Anonymized: {cleanResult.summary.total_cells_affected}</div>
+											<div>Columns Removed: {cleanResult.summary.columns_removed.length}</div>
+											<div>GDPR Compliant: {cleanResult.gdpr_compliance.length} articles applied</div>
+										</div>
+										<div className="mt-3 flex gap-2">
+											<a
+												href={getReportUrl(cleanResult.files.cleaned_csv)}
+												download
+												className="text-sm text-brand-600 underline"
+											>
+												Download Cleaned CSV →
+											</a>
+											<a
+												href={getReportUrl(cleanResult.files.audit_report)}
+												target="_blank"
+												rel="noopener noreferrer"
+												className="text-sm text-brand-600 underline"
+											>
+												View Audit Report →
+											</a>
+										</div>
+									</div>
+								)}
+							</div>
+						) : (
+							<p className="text-sm text-slate-600">
+								Process a dataset to see aggregated results.
+							</p>
+						)}
+					</div>
+				);
+			default:
+				return null;
+		}
+	}
+
+		return (
+			<div className="h-full overflow-y-auto p-6 bg-white/60">
+			{renderTabContent()}
+		</div>
+	);
+}

frontend/components/try/CenterPanel_BACKUP.tsx

@@ -4,6 +4,7 @@ import { useState, useRef, useCallback, useEffect } from "react";
 
 interface CenterPanelProps {
 	tab: TryTab;
+	onAnalyze?: () => void;
 }
 
 interface UploadedFileMeta {
@@ -13,11 +14,19 @@ interface UploadedFileMeta {
 	contentPreview: string;
 }
 
-export function CenterPanel({ tab }: CenterPanelProps) {
+interface TablePreviewData {
+	headers: string[];
+	rows: string[][];
+	origin: 'csv';
+}
+
+export function CenterPanel({ tab, onAnalyze }: CenterPanelProps) {
+		const PREVIEW_BYTES = 64 * 1024; // read first 64KB slice for large-file preview
 			const [fileMeta, setFileMeta] = useState<UploadedFileMeta | null>(null);
 		const [isDragging, setIsDragging] = useState(false);
 		const [progress, setProgress] = useState<number>(0);
 		const [progressLabel, setProgressLabel] = useState<string>("Processing");
+		const [tablePreview, setTablePreview] = useState<TablePreviewData | null>(null);
 		const inputRef = useRef<HTMLInputElement | null>(null);
 			const [loadedFromCache, setLoadedFromCache] = useState(false);
 
@@ -25,10 +34,43 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 			setFileMeta(null);
 			setProgress(0);
 			setProgressLabel("Processing");
+			setTablePreview(null);
 		};
 
+		function tryParseCSV(text: string, maxRows = 50, maxCols = 40): TablePreviewData | null {
+			const lines = text.split(/\r?\n/).filter(l => l.trim().length > 0);
+			if (lines.length < 2) return null;
+			const commaDensity = lines.slice(0, 10).filter(l => l.includes(',')).length;
+			if (commaDensity < 2) return null;
+			const parseLine = (line: string) => {
+				const out: string[] = [];
+				let cur = '';
+				let inQuotes = false;
+				for (let i = 0; i < line.length; i++) {
+					const ch = line[i];
+					if (ch === '"') {
+						if (inQuotes && line[i + 1] === '"') { cur += '"'; i++; } else { inQuotes = !inQuotes; }
+					} else if (ch === ',' && !inQuotes) {
+						out.push(cur);
+						cur = '';
+					} else { cur += ch; }
+				}
+				out.push(cur);
+				return out.map(c => c.trim());
+			};
+			const raw = lines.slice(0, maxRows).map(parseLine);
+			if (raw.length === 0) return null;
+			const headers = raw[0];
+			const colCount = Math.min(headers.length, maxCols);
+			const rows = raw.slice(1).map(r => r.slice(0, colCount));
+			return { headers: headers.slice(0, colCount), rows, origin: 'csv' };
+		}
+
+		// We no longer build table preview for JSON; revert JSON to raw text view.
+
 		const processFile = useCallback(async (f: File) => {
 		if (!f) return;
+		const isCSV = /\.csv$/i.test(f.name);
 			setProgress(0);
 			// For large files, show a progress bar while reading the file stream (no preview)
 			if (f.size > 1024 * 1024) {
@@ -37,13 +79,35 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 					name: f.name,
 					size: f.size,
 					type: f.type || "unknown",
-					contentPreview: "File too large for preview (limit 1MB).",
+					contentPreview: `Loading partial preview (first ${Math.round(PREVIEW_BYTES/1024)}KB)...`,
 				};
 				setFileMeta(metaObj);
+				setTablePreview(null);
 				// Save to IndexedDB immediately so it persists without needing full read
 				(async () => {
 					try { await saveLatestUpload(f, metaObj); } catch {}
 				})();
+				// Read head slice for partial preview & possible CSV table extraction
+				try {
+					const headBlob = f.slice(0, PREVIEW_BYTES);
+					const headReader = new FileReader();
+					headReader.onload = async () => {
+						try {
+							const buf = headReader.result as ArrayBuffer;
+							const decoder = new TextDecoder();
+							const text = decoder.decode(buf);
+							setFileMeta(prev => prev ? { ...prev, contentPreview: text.slice(0, 4000) } : prev);
+							if (isCSV) {
+								const parsed = tryParseCSV(text);
+								setTablePreview(parsed);
+							} else {
+								setTablePreview(null);
+							}
+							try { await saveLatestUpload(f, { ...metaObj, contentPreview: text.slice(0, 4000) }); } catch {}
+						} catch { /* ignore */ }
+					};
+					headReader.readAsArrayBuffer(headBlob);
+				} catch { /* ignore */ }
 				// Use streaming read for progress without buffering entire file in memory
 				try {
 					const stream: ReadableStream<Uint8Array> | undefined = (typeof (f as any).stream === "function" ? (f as any).stream() : undefined);
@@ -100,6 +164,12 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 						contentPreview: text.slice(0, 4000),
 						};
 						setFileMeta(metaObj);
+						if (isCSV) {
+							const parsed = tryParseCSV(text);
+							setTablePreview(parsed);
+						} else {
+							setTablePreview(null);
+						}
 						// Save file blob and meta to browser cache (IndexedDB)
 						try {
 							await saveLatestUpload(f, metaObj);
@@ -114,6 +184,7 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 						contentPreview: "Unable to decode preview.",
 						};
 						setFileMeta(metaObj);
+						setTablePreview(null);
 						try {
 							await saveLatestUpload(f, metaObj);
 						} catch {}
@@ -166,10 +237,10 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 			switch (tab) {
 			case "processing":
 					return (
-					<div className="space-y-4">
+						<div className="space-y-4 max-w-[1100px] xl:max-w-[1200px] w-full mx-auto">
 						<h2 className="text-xl font-semibold">Upload & Process Data</h2>
 						<p className="text-sm text-slate-600">Upload a CSV / JSON / text file. We will later parse, detect PII, and queue analyses.</p>
-									<div className="flex flex-col gap-3">
+									<div className="flex flex-col gap-3 min-w-0">
 										<div
 											onDragOver={onDragOver}
 											onDragLeave={onDragLeave}
@@ -219,10 +290,34 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 														<div className="mb-2 text-[11px] text-brand-700">Loaded from browser cache</div>
 													)}
 												<div className="mb-3 text-xs text-slate-500">{fileMeta.type || "Unknown type"}</div>
+												{/* Table preview when structured data detected; otherwise show text */}
+												{tablePreview && tablePreview.origin === 'csv' ? (
+													<div className="max-h-64 w-full min-w-0 overflow-x-auto overflow-y-auto rounded-md bg-slate-50">
+														<table className="min-w-full text-xs">
+															<thead className="sticky top-0 bg-slate-100">
+																<tr>
+																	{tablePreview.headers.map((h, idx) => (
+																		<th key={idx} className="text-left font-semibold px-3 py-2 border-b border-slate-200 whitespace-nowrap">{h}</th>
+																	))}
+																</tr>
+															</thead>
+															<tbody>
+																{tablePreview.rows.map((r, i) => (
+																	<tr key={i} className={i % 2 === 0 ? "" : "bg-slate-100/50"}>
+																		{r.map((c, j) => (
+																			<td key={j} className="px-3 py-1.5 border-b border-slate-100 whitespace-nowrap max-w-[24ch] overflow-hidden text-ellipsis">{c}</td>
+																		))}
+																	</tr>
+																))}
+															</tbody>
+														</table>
+													</div>
+												) : (
 													<pre className="max-h-64 overflow-auto text-xs bg-slate-50 p-3 rounded-md whitespace-pre-wrap leading-relaxed">
 														{fileMeta.contentPreview || "(no preview)"}
 													</pre>
-												<div className="mt-3 flex justify-end">
+												)}
+												<div className="mt-3 flex justify-end gap-2">
 													<button
 														type="button"
 															onClick={async () => {
@@ -234,6 +329,13 @@ export function CenterPanel({ tab }: CenterPanelProps) {
 													>
 														Clear
 													</button>
+													<button
+														type="button"
+														onClick={() => onAnalyze?.()}
+														className="text-xs rounded-md bg-brand-600 text-white px-3 py-1.5 hover:bg-brand-500"
+													>
+														Analyze
+													</button>
 												</div>
 								</div>
 							)}

frontend/nordic-privacy-ai/README.md

@@ -1,28 +0,0 @@
-# Nordic Privacy AI
-
-AI-Powered GDPR compliance & personal data protection platform tailored for Nordic ecosystems (BankID, MitID, Suomi.fi).
-
-## Tech Stack
-- Next.js (App Router, TypeScript)
-- Tailwind CSS
-
-## Getting Started
-```powershell
-npm install
-npm run dev
-```
-Visit http://localhost:3000 to view the landing page.
-
-## Scripts
-- `npm run dev` – Start dev server
-- `npm run build` – Production build
-- `npm start` – Run built app
-- `npm run lint` – ESLint
-
-## Next Steps
-- Implement /try page workflow
-- Add feature sections & agent explanations
-- Integrate backend services for data upload & scanning
-
-## License
-Internal hackathon prototype

frontend/nordic-privacy-ai/lib/idb.ts

@@ -0,0 +1,113 @@
+/**
+ * IndexedDB utilities for persisting file uploads in the browser.
+ * Stores the latest uploaded file and its metadata for recovery across sessions.
+ */
+
+const DB_NAME = "NordicPrivacyAI";
+const DB_VERSION = 1;
+const STORE_NAME = "latestUpload";
+
+interface UploadedFileMeta {
+  name: string;
+  size: number;
+  type: string;
+  contentPreview: string;
+}
+
+interface LatestUploadData {
+  file: File;
+  meta: UploadedFileMeta;
+  timestamp: number;
+}
+
+/**
+ * Open or create the IndexedDB database
+ */
+function openDB(): Promise<IDBDatabase> {
+  return new Promise((resolve, reject) => {
+    const request = indexedDB.open(DB_NAME, DB_VERSION);
+
+    request.onerror = () => reject(request.error);
+    request.onsuccess = () => resolve(request.result);
+
+    request.onupgradeneeded = (event) => {
+      const db = (event.target as IDBOpenDBRequest).result;
+      
+      // Create object store if it doesn't exist
+      if (!db.objectStoreNames.contains(STORE_NAME)) {
+        db.createObjectStore(STORE_NAME);
+      }
+    };
+  });
+}
+
+/**
+ * Save the latest uploaded file and its metadata to IndexedDB
+ */
+export async function saveLatestUpload(
+  file: File,
+  meta: UploadedFileMeta
+): Promise<void> {
+  const db = await openDB();
+  
+  return new Promise((resolve, reject) => {
+    const transaction = db.transaction([STORE_NAME], "readwrite");
+    const store = transaction.objectStore(STORE_NAME);
+    
+    const data: LatestUploadData = {
+      file,
+      meta,
+      timestamp: Date.now(),
+    };
+    
+    const request = store.put(data, "latest");
+    
+    request.onerror = () => reject(request.error);
+    request.onsuccess = () => resolve();
+    
+    transaction.oncomplete = () => db.close();
+  });
+}
+
+/**
+ * Retrieve the latest uploaded file and metadata from IndexedDB
+ */
+export async function getLatestUpload(): Promise<LatestUploadData> {
+  const db = await openDB();
+  
+  return new Promise((resolve, reject) => {
+    const transaction = db.transaction([STORE_NAME], "readonly");
+    const store = transaction.objectStore(STORE_NAME);
+    const request = store.get("latest");
+    
+    request.onerror = () => reject(request.error);
+    request.onsuccess = () => {
+      const result = request.result as LatestUploadData | undefined;
+      if (result) {
+        resolve(result);
+      } else {
+        reject(new Error("No cached upload found"));
+      }
+    };
+    
+    transaction.oncomplete = () => db.close();
+  });
+}
+
+/**
+ * Delete the latest upload from IndexedDB
+ */
+export async function deleteLatestUpload(): Promise<void> {
+  const db = await openDB();
+  
+  return new Promise((resolve, reject) => {
+    const transaction = db.transaction([STORE_NAME], "readwrite");
+    const store = transaction.objectStore(STORE_NAME);
+    const request = store.delete("latest");
+    
+    request.onerror = () => reject(request.error);
+    request.onsuccess = () => resolve();
+    
+    transaction.oncomplete = () => db.close();
+  });
+}

frontend/nordic-privacy-ai/next-env.d.ts

@@ -1,5 +0,0 @@
-/// <reference types="next" />
-/// <reference types="next/image-types/global" />
-
-// NOTE: This file should not be edited
-// see https://nextjs.org/docs/basic-features/typescript for more information.

requirements.txt

@@ -10,3 +10,14 @@ presidio-analyzer>=2.2.0
 presidio-anonymizer>=2.2.0
 spacy>=3.7.0
 # Download spaCy model with: python -m spacy download en_core_web_sm
+
+# FastAPI Backend
+fastapi>=0.109.0
+uvicorn[standard]>=0.27.0
+python-multipart>=0.0.6
+
+# Optional: GPU Support (uncomment if you have CUDA)
+# torch>=2.0.0 --index-url https://download.pytorch.org/whl/cu121
+
+# Chatbot (WIP - not exposed in API yet)
+gpt4all>=2.0.0

src/__init__.py

@@ -1,145 +0,0 @@
-"""
-AI Governance Module - Bias Detection and Risk Analysis
-"""
-
-from .data_processor import DataProcessor
-from .model_trainer import GeneralizedModelTrainer
-from .bias_analyzer import BiasAnalyzer
-from .risk_analyzer import RiskAnalyzer
-from .report_generator import ReportGenerator, NumpyEncoder
-
-import pandas as pd
-import json
-
-__version__ = '1.0.0'
-
-__all__ = [
-    'DataProcessor',
-    'GeneralizedModelTrainer',
-    'BiasAnalyzer',
-    'RiskAnalyzer',
-    'ReportGenerator',
-    'NumpyEncoder',
-    'AIGovernanceAnalyzer'
-]
-
-
-class AIGovernanceAnalyzer:
-    """
-    Main interface for AI Governance analysis
-    
-    Example:
-        >>> analyzer = AIGovernanceAnalyzer()
-        >>> report = analyzer.analyze('data.csv', 'target', ['gender', 'age'])
-        >>> print(f"Bias Score: {report['summary']['overall_bias_score']:.3f}")
-    """
-    
-    def __init__(self):
-        """Initialize the analyzer"""
-        self.processor = None
-        self.trainer = None
-        self.bias_analyzer = None
-        self.risk_analyzer = None
-        self.report_generator = None
-    
-    def analyze(self, data_path, target_column, protected_attributes):
-        """
-        Run complete AI governance analysis from file
-        
-        Args:
-            data_path (str): Path to CSV file
-            target_column (str): Name of target column
-            protected_attributes (list): List of protected attribute column names
-            
-        Returns:
-            dict: Complete analysis report
-        """
-        df = pd.read_csv(data_path)
-        return self.analyze_dataframe(df, target_column, protected_attributes)
-    
-    def analyze_dataframe(self, df, target_column, protected_attributes):
-        """
-        Run complete AI governance analysis from DataFrame
-        
-        Args:
-            df (pd.DataFrame): Input dataframe
-            target_column (str): Name of target column
-            protected_attributes (list): List of protected attribute column names
-            
-        Returns:
-            dict: Complete analysis report
-        """
-        # Step 1: Process data
-        self.processor = DataProcessor(df)
-        self.processor.target_column = target_column
-        self.processor.protected_attributes = protected_attributes
-        self.processor.prepare_data()
-        
-        # Step 2: Train model
-        self.trainer = GeneralizedModelTrainer(
-            self.processor.X_train,
-            self.processor.X_test,
-            self.processor.y_train,
-            self.processor.y_test,
-            self.processor.feature_names
-        )
-        self.trainer.train()
-        self.trainer.evaluate()
-        
-        # Step 3: Analyze bias
-        self.bias_analyzer = BiasAnalyzer(
-            self.processor.X_test,
-            self.processor.y_test,
-            self.trainer.y_pred,
-            self.processor.df,
-            self.processor.protected_attributes,
-            self.processor.target_column
-        )
-        bias_results = self.bias_analyzer.analyze()
-        
-        # Step 4: Assess risks
-        self.risk_analyzer = RiskAnalyzer(
-            self.processor.df,
-            self.trainer.results,
-            bias_results,
-            self.processor.protected_attributes,
-            self.processor.target_column
-        )
-        risk_results = self.risk_analyzer.analyze()
-        
-        # Step 5: Generate report
-        self.report_generator = ReportGenerator(
-            self.trainer.results,
-            bias_results,
-            risk_results,
-            self.processor.df
-        )
-        
-        return self.report_generator.generate_report()
-    
-    def save_report(self, report, output_path):
-        """
-        Save report to JSON file
-        
-        Args:
-            report (dict): Analysis report
-            output_path (str): Path to save JSON file
-            
-        Returns:
-            str: Path to saved file
-        """
-        with open(output_path, 'w') as f:
-            json.dump(report, f, indent=2, cls=NumpyEncoder)
-        return output_path
-    
-    def get_summary(self, report):
-        """
-        Get executive summary from report
-        
-        Args:
-            report (dict): Analysis report
-            
-        Returns:
-            dict: Summary metrics
-        """
-        return report.get('summary', {})

src/report_generator.py

@@ -1,263 +0,0 @@
-"""
-Report Generator Module
-Generates comprehensive JSON reports
-"""
-
-import json
-import numpy as np
-from datetime import datetime
-
-class NumpyEncoder(json.JSONEncoder):
-    """Custom JSON encoder for numpy types"""
-    def default(self, obj):
-        if isinstance(obj, (np.integer, np.int64, np.int32)):
-            return int(obj)
-        elif isinstance(obj, (np.floating, np.float64, np.float32)):
-            return float(obj)
-        elif isinstance(obj, (np.ndarray,)):
-            return obj.tolist()
-        elif isinstance(obj, (np.bool_,)):
-            return bool(obj)
-        return super(NumpyEncoder, self).default(obj)
-
-class ReportGenerator:
-    """Generate comprehensive analysis reports"""
-    
-    def __init__(self, model_results, bias_results, risk_results, df):
-        self.model_results = model_results
-        self.bias_results = bias_results
-        self.risk_results = risk_results
-        self.df = df
-    
-    def generate_report(self):
-        """Generate comprehensive JSON report"""
-        report = {
-            'metadata': self._generate_metadata(),
-            'summary': self._generate_summary(),
-            'model_performance': self._format_model_results(),
-            'bias_analysis': self._format_bias_results(),
-            'risk_assessment': self._format_risk_results(),
-            'key_findings': self._extract_key_findings(),
-            'recommendations': self._compile_recommendations(),
-            'detailed_metrics': self._compile_detailed_metrics()
-        }
-        
-        return report
-    
-    def _generate_metadata(self):
-        """Generate report metadata"""
-        return {
-            'report_id': f"AIGov_{datetime.now().strftime('%Y%m%d_%H%M%S')}",
-            'generated_at': datetime.now().isoformat(),
-            'report_version': '1.0',
-            'dataset_info': {
-                'total_records': len(self.df),
-                'total_features': len(self.df.columns),
-                'columns': list(self.df.columns)
-            }
-        }
-    
-    def _generate_summary(self):
-        """Generate executive summary"""
-        model_metrics = self.model_results.get('metrics', {})
-        
-        return {
-            'overall_bias_score': self.bias_results.get('overall_bias_score', 0.0),
-            'overall_risk_score': self.risk_results.get('overall_risk_score', 0.0),
-            'risk_level': self.risk_results.get('risk_level', 'UNKNOWN'),
-            'model_accuracy': model_metrics.get('accuracy', 0.0),
-            'fairness_violations_count': len(self.bias_results.get('fairness_violations', [])),
-            'passes_fairness_threshold': self.bias_results.get('fairness_assessment', {}).get('passes_fairness_threshold', False)
-        }
-    
-    def _format_model_results(self):
-        """Format model performance results"""
-        return {
-            'model_type': self.model_results.get('model_type', 'Unknown'),
-            'metrics': self.model_results.get('metrics', {}),
-            'confusion_matrix': self.model_results.get('confusion_matrix', []),
-            'top_features': dict(list(self.model_results.get('feature_importance', {}).items())[:10])
-        }
-    
-    def _format_bias_results(self):
-        """Format bias analysis results"""
-        return {
-            'overall_bias_score': self.bias_results.get('overall_bias_score', 0.0),
-            'fairness_metrics': self.bias_results.get('fairness_metrics', {}),
-            'fairness_violations': self.bias_results.get('fairness_violations', []),
-            'fairness_assessment': self.bias_results.get('fairness_assessment', {}),
-            'demographic_bias_summary': self._summarize_demographic_bias()
-        }
-    
-    def _format_risk_results(self):
-        """Format risk assessment results"""
-        return {
-            'overall_risk_score': self.risk_results.get('overall_risk_score', 0.0),
-            'risk_level': self.risk_results.get('risk_level', 'UNKNOWN'),
-            'risk_categories': self.risk_results.get('risk_categories', {}),
-            'privacy_risks': self._summarize_privacy_risks(),
-            'ethical_risks': self._summarize_ethical_risks()
-        }
-    
-    def _summarize_demographic_bias(self):
-        """Summarize demographic bias"""
-        demo_bias = self.bias_results.get('demographic_bias', {})
-        summary = {}
-        
-        for attr, data in demo_bias.items():
-            summary[attr] = {
-                'max_disparity': data.get('max_disparity', 0),
-                'groups_analyzed': len(data.get('approval_rates', {}))
-            }
-        
-        return summary
-    
-    def _summarize_privacy_risks(self):
-        """Summarize privacy risks"""
-        privacy = self.risk_results.get('privacy_risks', {})
-        
-        return {
-            'pii_count': len(privacy.get('pii_detected', [])),
-            'anonymization_level': privacy.get('anonymization_level', 'UNKNOWN'),
-            'exposure_risk_count': len(privacy.get('exposure_risks', [])),
-            'gdpr_compliance_score': privacy.get('gdpr_compliance', {}).get('compliance_score', 0)
-        }
-    
-    def _summarize_ethical_risks(self):
-        """Summarize ethical risks"""
-        ethical = self.risk_results.get('ethical_risks', {})
-        
-        return {
-            'fairness_issues_count': len(ethical.get('fairness_issues', [])),
-            'transparency_score': ethical.get('transparency_score', 0),
-            'bias_amplification_risk': ethical.get('bias_amplification_risk', 'UNKNOWN'),
-            'social_impact': ethical.get('social_impact_assessment', {})
-        }
-    
-    def _extract_key_findings(self):
-        """Extract key findings from analysis"""
-        findings = []
-        
-        # Model performance findings
-        accuracy = self.model_results.get('metrics', {}).get('accuracy', 0)
-        if accuracy >= 0.8:
-            findings.append(f"✓ Model achieves good accuracy ({accuracy:.2%})")
-        else:
-            findings.append(f"⚠ Model accuracy is below optimal ({accuracy:.2%})")
-        
-        # Bias findings
-        bias_score = self.bias_results.get('overall_bias_score', 0)
-        if bias_score < 0.3:
-            findings.append("✓ Low bias detected across protected attributes")
-        elif bias_score < 0.5:
-            findings.append("⚠ Moderate bias detected - monitoring recommended")
-        else:
-            findings.append("❌ High bias detected - immediate action required")
-        
-        # Fairness violations
-        violations = self.bias_results.get('fairness_violations', [])
-        if violations:
-            high_sev = sum(1 for v in violations if v['severity'] == 'HIGH')
-            findings.append(f"❌ {len(violations)} fairness violations detected ({high_sev} high severity)")
-        else:
-            findings.append("✓ No fairness violations detected")
-        
-        # Privacy findings
-        privacy = self.risk_results.get('privacy_risks', {})
-        pii_count = len(privacy.get('pii_detected', []))
-        if pii_count > 0:
-            findings.append(f"⚠ {pii_count} columns contain potential PII")
-        else:
-            findings.append("✓ No obvious PII detected in dataset")
-        
-        # Risk level
-        risk_level = self.risk_results.get('risk_level', 'UNKNOWN')
-        findings.append(f"Overall Risk Level: {risk_level}")
-        
-        return findings
-    
-    def _compile_recommendations(self):
-        """Compile all recommendations"""
-        recommendations = []
-        
-        # Get recommendations from each component
-        privacy_recs = self.risk_results.get('privacy_risks', {}).get('recommendations', [])
-        ethical_recs = self.risk_results.get('ethical_risks', {}).get('recommendations', [])
-        performance_recs = self.risk_results.get('model_performance_risks', {}).get('recommendations', [])
-        compliance_recs = self.risk_results.get('compliance_risks', {}).get('recommendations', [])
-        
-        # Prioritize recommendations
-        all_recs = []
-        
-        # High priority (from violations and high risks)
-        violations = self.bias_results.get('fairness_violations', [])
-        if violations:
-            all_recs.append({
-                'priority': 'HIGH',
-                'category': 'Fairness',
-                'recommendation': 'Address fairness violations in protected attributes'
-            })
-        
-        if len(privacy_recs) > 0:
-            all_recs.append({
-                'priority': 'HIGH',
-                'category': 'Privacy',
-                'recommendation': privacy_recs[0]
-            })
-        
-        # Medium priority
-        for rec in ethical_recs[:2]:
-            all_recs.append({
-                'priority': 'MEDIUM',
-                'category': 'Ethics',
-                'recommendation': rec
-            })
-        
-        # Lower priority
-        for rec in performance_recs[:2]:
-            all_recs.append({
-                'priority': 'MEDIUM',
-                'category': 'Performance',
-                'recommendation': rec
-            })
-        
-        for rec in compliance_recs[:2]:
-            all_recs.append({
-                'priority': 'MEDIUM',
-                'category': 'Compliance',
-                'recommendation': rec
-            })
-        
-        # Convert to simple list with formatting
-        recommendations = [
-            f"[{r['priority']}] {r['category']}: {r['recommendation']}"
-            for r in all_recs[:10]  # Limit to top 10
-        ]
-        
-        return recommendations
-    
-    def _compile_detailed_metrics(self):
-        """Compile detailed metrics for analysis"""
-        return {
-            'bias_metrics': {
-                'by_attribute': self.bias_results.get('fairness_metrics', {}),
-                'demographic_analysis': self.bias_results.get('demographic_bias', {})
-            },
-            'risk_breakdown': {
-                'privacy': self.risk_results.get('privacy_risks', {}),
-                'ethical': self.risk_results.get('ethical_risks', {}),
-                'compliance': self.risk_results.get('compliance_risks', {}),
-                'data_quality': self.risk_results.get('data_quality_risks', {})
-            },
-            'model_details': {
-                'classification_report': self.model_results.get('classification_report', {}),
-                'feature_importance': self.model_results.get('feature_importance', {})
-            }
-        }
-    
-    def save_report(self, filepath):
-        """Save report to JSON file"""
-        report = self.generate_report()
-        with open(filepath, 'w') as f:
-            json.dump(report, f, indent=2, cls=NumpyEncoder)
-        return filepath

start_api.py

@@ -0,0 +1,21 @@
+"""
+Start the FastAPI server
+Run: python start_api.py
+"""
+
+import uvicorn
+
+if __name__ == "__main__":
+    print("🚀 Starting Nordic Privacy AI API Server...")
+    print("📍 API will be available at: http://localhost:8000")
+    print("📖 Interactive docs at: http://localhost:8000/docs")
+    print("🔗 Frontend should run at: http://localhost:3000")
+    print("\nPress CTRL+C to stop\n")
+    
+    uvicorn.run(
+        "api.main:app",
+        host="0.0.0.0",
+        port=8000,
+        reload=True,  # Auto-reload on code changes
+        log_level="info"
+    )

test_cleaning.py

@@ -10,7 +10,7 @@ import os
 # Add parent directory to path
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 
-from cleaning import DataCleaner, CleaningConfig
+from data_cleaning import DataCleaner
 
 
 def test_basic_cleaning():