diff --git a/DEPLOY.md b/DEPLOY.md
deleted file mode 100644
index eea6f03..0000000
--- a/DEPLOY.md
+++ /dev/null
@@ -1,63 +0,0 @@
-# Deployment Guide for Filamenteka
-
-## Important: API Update Required
-
-The production API at api.filamenteka.rs needs to be updated with the latest code changes.
-
-### Changes that need to be deployed:
-
-1. **Database Schema Changes**:
-   - Column renamed from `vakum` to `spulna` 
-   - Column `otvoreno` has been removed
-   - Data types changed from strings to integers for `refill` and `spulna`
-   - Added CHECK constraint: `kolicina = refill + spulna`
-
-2. **API Server Changes**:
-   - Updated `/api/filaments` endpoints to use new column names
-   - Updated data type handling (integers instead of strings)
-   - Added proper quantity calculation
-
-### Deployment Steps:
-
-1. **Update the API server code**:
-   ```bash
-   # On the production server
-   cd /path/to/api
-   git pull origin main
-   npm install
-   ```
-
-2. **Run database migrations**:
-   ```bash
-   # Run the migration to rename columns
-   psql $DATABASE_URL < database/migrations/003_rename_vakum_to_spulna.sql
-   
-   # Run the migration to fix data types
-   psql $DATABASE_URL < database/migrations/004_fix_inventory_data_types.sql
-   
-   # Fix any data inconsistencies
-   psql $DATABASE_URL < database/migrations/fix_quantity_consistency.sql
-   ```
-
-3. **Restart the API server**:
-   ```bash
-   # Restart the service
-   pm2 restart filamenteka-api
-   # or
-   systemctl restart filamenteka-api
-   ```
-
-### Temporary Frontend Compatibility
-
-The frontend has been updated to handle both old and new API response formats, so it will work with both:
-- Old format: `vakum`, `otvoreno` (strings)
-- New format: `spulna` (integer), no `otvoreno` field
-
-Once the API is updated, the compatibility layer can be removed.
-
-### Verification
-
-After deployment, verify:
-1. API returns `spulna` instead of `vakum`
-2. Values are integers, not strings
-3. Quantity calculations are correct (`kolicina = refill + spulna`)
\ No newline at end of file
diff --git a/DEPLOYMENT.md b/DEPLOYMENT.md
deleted file mode 100644
index c028ce4..0000000
--- a/DEPLOYMENT.md
+++ /dev/null
@@ -1,101 +0,0 @@
-# Filamenteka Deployment Guide
-
-## Architecture
-
-Filamenteka now uses:
-- **Frontend**: Next.js deployed on AWS Amplify
-- **Database**: PostgreSQL on AWS RDS (publicly accessible)
-- **API**: Node.js server that can be run locally or deployed anywhere
-
-## AWS RDS Setup
-
-1. Navigate to the terraform directory:
-   ```bash
-   cd terraform
-   ```
-
-2. Initialize Terraform:
-   ```bash
-   terraform init
-   ```
-
-3. Apply the infrastructure:
-   ```bash
-   terraform apply
-   ```
-
-4. After deployment, get the database connection details:
-   ```bash
-   terraform output -json
-   ```
-
-5. Get the database password from AWS Secrets Manager:
-   ```bash
-   aws secretsmanager get-secret-value --secret-id filamenteka-db-credentials --query SecretString --output text | jq -r .password
-   ```
-
-## Running the API
-
-### Option 1: Local Development
-
-1. Create `.env` file in the `api` directory:
-   ```
-   DATABASE_URL=postgresql://filamenteka_admin:[PASSWORD]@[RDS_ENDPOINT]/filamenteka
-   JWT_SECRET=your-secret-key-here
-   ADMIN_PASSWORD=your-password-here
-   PORT=4000
-   ```
-
-2. Install dependencies and run migrations:
-   ```bash
-   cd api
-   npm install
-   npm run migrate
-   npm run dev
-   ```
-
-### Option 2: Deploy on a VPS/Cloud Service
-
-You can deploy the Node.js API on:
-- Heroku
-- Railway
-- Render
-- AWS EC2
-- DigitalOcean
-- Any VPS with Node.js
-
-Just ensure the `DATABASE_URL` points to your RDS instance.
-
-## Frontend Configuration
-
-Update `.env.local` to point to your API:
-```
-NEXT_PUBLIC_API_URL=http://localhost:4000/api  # For local
-# or
-NEXT_PUBLIC_API_URL=https://your-api-domain.com/api  # For production
-```
-
-## Security Notes
-
-1. **RDS Security**: The current configuration allows access from anywhere (0.0.0.0/0). In production:
-   - Update the security group to only allow your IP addresses
-   - Or use a VPN/bastion host
-   - Or deploy the API in the same VPC and restrict access
-
-2. **API Security**: 
-   - Change the default admin password
-   - Use strong JWT secrets
-   - Enable HTTPS in production
-
-## Database Management
-
-Connect to the PostgreSQL database using any client:
-```
-psql postgresql://filamenteka_admin:[PASSWORD]@[RDS_ENDPOINT]/filamenteka
-```
-
-Or use a GUI tool like:
-- pgAdmin
-- TablePlus
-- DBeaver
-- DataGrip
\ No newline at end of file
diff --git a/PROJECT_STRUCTURE.md b/PROJECT_STRUCTURE.md
deleted file mode 100644
index df9273e..0000000
--- a/PROJECT_STRUCTURE.md
+++ /dev/null
@@ -1,126 +0,0 @@
-# Project Structure
-
-## Overview
-Filamenteka is organized with clear separation between frontend, API, and infrastructure code.
-
-## Directory Structure
-
-```
-filamenteka/
-├── app/                      # Next.js app directory
-│   ├── page.tsx             # Main page
-│   ├── layout.tsx           # Root layout
-│   └── upadaj/              # Admin pages
-│       ├── page.tsx         # Admin login
-│       ├── dashboard/       # Filament management
-│       └── colors/          # Color management
-│
-├── src/                     # Source code
-│   ├── components/          # React components
-│   │   ├── FilamentTableV2.tsx
-│   │   ├── EnhancedFilters.tsx
-│   │   ├── ColorSwatch.tsx
-│   │   ├── InventoryBadge.tsx
-│   │   └── MaterialBadge.tsx
-│   ├── types/              # TypeScript types
-│   │   ├── filament.ts
-│   │   └── filament.v2.ts
-│   ├── services/           # API services
-│   │   └── api.ts
-│   └── styles/             # Component styles
-│       ├── index.css
-│       └── select.css
-│
-├── api/                    # Node.js Express API
-│   ├── server.js          # Express server
-│   ├── migrate.js         # Database migration script
-│   ├── package.json       # API dependencies
-│   └── Dockerfile         # Docker configuration
-│
-├── database/              # Database schemas
-│   └── schema.sql        # PostgreSQL schema
-│
-├── terraform/             # Infrastructure as Code
-│   ├── main.tf           # Main configuration
-│   ├── vpc.tf            # VPC and networking
-│   ├── rds.tf            # PostgreSQL RDS
-│   ├── ec2-api.tf        # EC2 for API server
-│   ├── alb.tf            # Application Load Balancer
-│   ├── ecr.tf            # Docker registry
-│   ├── cloudflare-api.tf # Cloudflare DNS
-│   └── variables.tf      # Variable definitions
-│
-├── scripts/               # Utility scripts
-│   ├── security/         # Security checks
-│   │   └── security-check.js
-│   └── pre-commit.sh     # Git pre-commit hook
-│
-├── config/               # Configuration files
-│   └── environments.js   # Environment configuration
-│
-└── public/               # Static assets
-```
-
-## Environment Files
-
-- `.env.development` - Development environment variables
-- `.env.production` - Production environment variables
-- `.env.local` - Local overrides (not committed)
-
-## Key Concepts
-
-### Architecture
-- **Frontend**: Next.js static site hosted on AWS Amplify
-- **API**: Node.js Express server running on EC2
-- **Database**: PostgreSQL on AWS RDS
-- **HTTPS**: Application Load Balancer with ACM certificate
-
-### Data Flow
-1. Frontend (Next.js) → HTTPS API (ALB) → Express Server (EC2) → PostgreSQL (RDS)
-2. Authentication via JWT tokens
-3. Real-time database synchronization
-
-### Infrastructure
-- Managed via Terraform
-- AWS services: RDS, EC2, ALB, VPC, ECR, Amplify
-- Cloudflare for DNS management
-- Docker for API containerization
-
-## Development Workflow
-
-1. **Local Development**
-   ```bash
-   npm run dev
-   ```
-
-2. **Deploy Infrastructure**
-   ```bash
-   cd terraform
-   terraform apply
-   ```
-
-3. **Deploy API Updates**
-   - API automatically pulls latest Docker image every 5 minutes
-   - Or manually: SSH to EC2 and run deployment script
-
-## Database Management
-
-### Run Migrations
-```bash
-cd api
-npm run migrate
-```
-
-### Connect to Database
-```bash
-psql postgresql://user:pass@rds-endpoint/filamenteka
-```
-
-## Security
-
-- No hardcoded credentials
-- JWT authentication for admin
-- Environment-specific configurations
-- Pre-commit security checks
-- HTTPS everywhere
-- VPC isolation for backend services
\ No newline at end of file
diff --git a/api-update-sale.tar.gz b/api-update-sale.tar.gz
deleted file mode 100644
index b99fd73..0000000
Binary files a/api-update-sale.tar.gz and /dev/null differ
diff --git a/database/migrations/016_add_tpu_colors.sql b/database/migrations/016_add_tpu_colors.sql
deleted file mode 100644
index 1a2847d..0000000
--- a/database/migrations/016_add_tpu_colors.sql
+++ /dev/null
@@ -1,45 +0,0 @@
--- Migration: Add new TPU colors
--- Adds Frozen to TPU 90A and Neon Orange to TPU 85A
-
--- First, add the new colors to the colors table
-INSERT INTO colors (name, hex) VALUES 
-    ('Frozen', '#B2E2F5'),
-    ('Neon Orange', '#F68A1B')
-ON CONFLICT (name) 
-DO UPDATE SET hex = EXCLUDED.hex;
-
--- Add TPU 90A filament for Frozen color
-INSERT INTO filaments (tip, finish, boja, boja_hex, refill, spulna, kolicina, cena)
-SELECT 
-    'TPU' as tip,
-    '90A' as finish,
-    'Frozen' as boja,
-    '#B2E2F5' as boja_hex,
-    0 as refill,
-    0 as spulna,
-    0 as kolicina,
-    '0' as cena
-WHERE NOT EXISTS (
-    SELECT 1 FROM filaments 
-    WHERE tip = 'TPU' 
-    AND finish = '90A' 
-    AND boja = 'Frozen'
-);
-
--- Add TPU 85A filament for Neon Orange color
-INSERT INTO filaments (tip, finish, boja, boja_hex, refill, spulna, kolicina, cena)
-SELECT 
-    'TPU' as tip,
-    '85A' as finish,
-    'Neon Orange' as boja,
-    '#F68A1B' as boja_hex,
-    0 as refill,
-    0 as spulna,
-    0 as kolicina,
-    '0' as cena
-WHERE NOT EXISTS (
-    SELECT 1 FROM filaments 
-    WHERE tip = 'TPU' 
-    AND finish = '85A' 
-    AND boja = 'Neon Orange'
-);
\ No newline at end of file
diff --git a/docs/DATA_STRUCTURE_PROPOSAL.md b/docs/DATA_STRUCTURE_PROPOSAL.md
deleted file mode 100644
index 1256369..0000000
--- a/docs/DATA_STRUCTURE_PROPOSAL.md
+++ /dev/null
@@ -1,255 +0,0 @@
-# Improved Data Structure Proposal
-
-## Current Issues
-1. Mixed languages (English/Serbian)
-2. String fields for numeric/boolean values
-3. Inconsistent status representation
-4. No proper inventory tracking
-5. Missing important metadata
-
-## Proposed Structure
-
-```typescript
-interface Filament {
-  // Identifiers
-  id: string;
-  sku?: string;  // For internal tracking
-  
-  // Product Info
-  brand: string;
-  type: 'PLA' | 'PETG' | 'ABS' | 'TPU' | 'SILK' | 'CF' | 'WOOD';
-  material: {
-    base: 'PLA' | 'PETG' | 'ABS' | 'TPU';
-    modifier?: 'Silk' | 'Matte' | 'Glow' | 'Wood' | 'CF';
-  };
-  color: {
-    name: string;
-    hex?: string;      // Color code for UI display
-    pantone?: string;  // For color matching
-  };
-  
-  // Physical Properties
-  weight: {
-    value: number;     // 1000 for 1kg, 500 for 0.5kg
-    unit: 'g' | 'kg';
-  };
-  diameter: number;    // 1.75 or 2.85
-  
-  // Inventory Status
-  inventory: {
-    total: number;     // Total spools
-    available: number; // Available for use
-    inUse: number;     // Currently being used
-    locations: {
-      vacuum: number;  // In vacuum storage
-      opened: number;  // Opened but usable
-      printer: number; // Loaded in printer
-    };
-  };
-  
-  // Purchase Info
-  pricing: {
-    purchasePrice?: number;
-    currency: 'RSD' | 'EUR' | 'USD';
-    supplier?: string;
-    purchaseDate?: string;
-  };
-  
-  // Condition
-  condition: {
-    isRefill: boolean;
-    openedDate?: string;
-    expiryDate?: string;
-    storageCondition: 'vacuum' | 'sealed' | 'opened' | 'desiccant';
-    humidity?: number;  // Last measured
-  };
-  
-  // Metadata
-  tags: string[];      // ['premium', 'engineering', 'easy-print']
-  notes?: string;      // Special handling instructions
-  images?: string[];   // S3 URLs for photos
-  
-  // Timestamps
-  createdAt: string;
-  updatedAt: string;
-  lastUsed?: string;
-}
-```
-
-## Benefits
-
-### 1. **Better Filtering**
-```typescript
-// Find all sealed PLA under 1kg
-filaments.filter(f => 
-  f.material.base === 'PLA' && 
-  f.weight.value <= 1000 && 
-  f.condition.storageCondition === 'vacuum'
-)
-```
-
-### 2. **Inventory Management**
-```typescript
-// Get total available filament weight
-const totalWeight = filaments.reduce((sum, f) => 
-  sum + (f.inventory.available * f.weight.value), 0
-);
-
-// Find low stock items
-const lowStock = filaments.filter(f => 
-  f.inventory.available <= 1 && f.inventory.total > 0
-);
-```
-
-### 3. **Color Management**
-```typescript
-// Group by color for visualization
-const colorGroups = filaments.reduce((groups, f) => {
-  const color = f.color.name;
-  groups[color] = groups[color] || [];
-  groups[color].push(f);
-  return groups;
-}, {});
-```
-
-### 4. **Usage Tracking**
-```typescript
-// Find most used filaments
-const mostUsed = filaments
-  .filter(f => f.lastUsed)
-  .sort((a, b) => new Date(b.lastUsed) - new Date(a.lastUsed))
-  .slice(0, 10);
-```
-
-## Migration Strategy
-
-### Phase 1: Add New Fields (Non-breaking)
-```javascript
-// Update Lambda to handle both old and new structure
-const migrateFilament = (old) => ({
-  ...old,
-  material: {
-    base: old.tip || 'PLA',
-    modifier: old.finish !== 'Basic' ? old.finish : undefined
-  },
-  color: {
-    name: old.boja
-  },
-  weight: {
-    value: 1000, // Default 1kg
-    unit: 'g'
-  },
-  inventory: {
-    total: parseInt(old.kolicina) || 1,
-    available: old.otvoreno ? 0 : 1,
-    inUse: 0,
-    locations: {
-      vacuum: old.vakum ? 1 : 0,
-      opened: old.otvoreno ? 1 : 0,
-      printer: 0
-    }
-  },
-  condition: {
-    isRefill: old.refill === 'Da',
-    storageCondition: old.vakum ? 'vacuum' : (old.otvoreno ? 'opened' : 'sealed')
-  }
-});
-```
-
-### Phase 2: Update UI Components
-- Create new filter components for material type
-- Add inventory status indicators
-- Color preview badges
-- Storage condition icons
-
-### Phase 3: Enhanced Features
-1. **Barcode/QR Integration**: Generate QR codes for each spool
-2. **Usage History**: Track which prints used which filament
-3. **Alerts**: Low stock, expiry warnings
-4. **Analytics**: Cost per print, filament usage trends
-
-## DynamoDB Optimization
-
-### Current Indexes
-- brand-index
-- tip-index  
-- status-index
-
-### Proposed Indexes
-```terraform
-global_secondary_index {
-  name = "material-color-index"
-  hash_key = "material.base"
-  range_key = "color.name"
-}
-
-global_secondary_index {
-  name = "inventory-status-index"
-  hash_key = "condition.storageCondition"
-  range_key = "inventory.available"
-}
-
-global_secondary_index {
-  name = "brand-type-index"
-  hash_key = "brand"
-  range_key = "material.base"
-}
-```
-
-## Example Queries
-
-### Find all available green filaments
-```javascript
-const greenFilaments = await dynamodb.query({
-  IndexName: 'material-color-index',
-  FilterExpression: 'contains(color.name, :green) AND inventory.available > :zero',
-  ExpressionAttributeValues: {
-    ':green': 'Green',
-    ':zero': 0
-  }
-}).promise();
-```
-
-### Get inventory summary
-```javascript
-const summary = await dynamodb.scan({
-  TableName: TABLE_NAME,
-  ProjectionExpression: 'brand, material.base, inventory'
-}).promise();
-
-const report = summary.Items.reduce((acc, item) => {
-  const key = `${item.brand}-${item.material.base}`;
-  acc[key] = (acc[key] || 0) + item.inventory.total;
-  return acc;
-}, {});
-```
-
-## UI Improvements
-
-### 1. **Visual Inventory Status**
-```tsx
-<div className="flex gap-2">
-  {filament.inventory.locations.vacuum > 0 && (
-    <Badge icon="vacuum" count={filament.inventory.locations.vacuum} />
-  )}
-  {filament.inventory.locations.opened > 0 && (
-    <Badge icon="box-open" count={filament.inventory.locations.opened} />
-  )}
-</div>
-```
-
-### 2. **Color Swatches**
-```tsx
-<div 
-  className="w-8 h-8 rounded-full border-2"
-  style={{ backgroundColor: filament.color.hex || getColorFromName(filament.color.name) }}
-  title={filament.color.name}
-/>
-```
-
-### 3. **Smart Filters**
-- Quick filters: "Ready to use", "Low stock", "Refills only"
-- Material groups: "Standard PLA", "Engineering", "Specialty"
-- Storage status: "Vacuum sealed", "Open spools", "In printer"
-
-Would you like me to implement this improved structure?
\ No newline at end of file
diff --git a/jest.setup.js b/jest.setup.js
index 7823063..95e867d 100644
--- a/jest.setup.js
+++ b/jest.setup.js
@@ -3,4 +3,22 @@ import '@testing-library/jest-dom'
 // Add TextEncoder/TextDecoder globals for Node.js environment
 const { TextEncoder, TextDecoder } = require('util');
 global.TextEncoder = TextEncoder;
-global.TextDecoder = TextDecoder;
\ No newline at end of file
+global.TextDecoder = TextDecoder;
+
+// Mock axios globally
+jest.mock('axios', () => ({
+  create: jest.fn(() => ({
+    get: jest.fn(),
+    post: jest.fn(),
+    put: jest.fn(),
+    delete: jest.fn(),
+    interceptors: {
+      request: {
+        use: jest.fn()
+      },
+      response: {
+        use: jest.fn()
+      }
+    }
+  }))
+}))
\ No newline at end of file
diff --git a/scripts/add-basic-refills.sql b/scripts/add-basic-refills.sql
deleted file mode 100644
index cc3296d..0000000
--- a/scripts/add-basic-refills.sql
+++ /dev/null
@@ -1,56 +0,0 @@
--- Add 1 refill and 1 spulna for each color as PLA Basic filaments
--- Run this with: psql $DATABASE_URL -f scripts/add-basic-refills.sql
-
--- First show what colors we have
-SELECT name, hex FROM colors ORDER BY name;
-
--- Insert PLA Basic filaments with 1 refill and 1 spulna for each color that doesn't already have one
-INSERT INTO filaments (tip, finish, boja, boja_hex, refill, spulna, kolicina, cena)
-SELECT 
-    'PLA' as tip,
-    'Basic' as finish,
-    c.name as boja,
-    c.hex as boja_hex,
-    1 as refill,
-    1 as spulna,
-    2 as kolicina,  -- 1 refill + 1 spulna
-    '3999' as cena
-FROM colors c
-WHERE NOT EXISTS (
-    SELECT 1 FROM filaments f 
-    WHERE f.tip = 'PLA' 
-    AND f.finish = 'Basic' 
-    AND f.boja = c.name
-)
-ON CONFLICT DO NOTHING;
-
--- Update any existing PLA Basic filaments to have 1 refill and 1 spulna
-UPDATE filaments
-SET refill = 1,
-    spulna = 1,
-    kolicina = 2  -- Update quantity to reflect 1 refill + 1 spulna
-WHERE tip = 'PLA' 
-AND finish = 'Basic'
-AND (refill = 0 OR spulna = 0);
-
--- Show summary
-SELECT 
-    'Total PLA Basic filaments with refills and spulna' as description,
-    COUNT(*) as count 
-FROM filaments 
-WHERE tip = 'PLA' 
-AND finish = 'Basic' 
-AND refill = 1
-AND spulna = 1;
-
--- Show all PLA Basic filaments
-SELECT 
-    boja as color,
-    refill,
-    spulna,
-    kolicina as quantity,
-    cena as price
-FROM filaments 
-WHERE tip = 'PLA' 
-AND finish = 'Basic'
-ORDER BY boja;
\ No newline at end of file
diff --git a/scripts/run-sale-migration.sh b/scripts/run-sale-migration.sh
deleted file mode 100755
index d1e5bc2..0000000
--- a/scripts/run-sale-migration.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-
-echo "Running sale fields migration..."
-
-# Get RDS endpoint from AWS
-RDS_ENDPOINT=$(aws rds describe-db-instances --region eu-central-1 --db-instance-identifier filamenteka --query 'DBInstances[0].Endpoint.Address' --output text)
-
-# Get database credentials from Secrets Manager
-DB_CREDS=$(aws secretsmanager get-secret-value --region eu-central-1 --secret-id filamenteka-db-credentials --query 'SecretString' --output text)
-DB_USER=$(echo $DB_CREDS | jq -r '.username')
-DB_PASS=$(echo $DB_CREDS | jq -r '.password')
-DB_NAME=$(echo $DB_CREDS | jq -r '.database')
-
-# Run the migration
-PGPASSWORD="$DB_PASS" psql -h $RDS_ENDPOINT -U $DB_USER -d $DB_NAME -f database/migrations/014_add_sale_fields.sql
-
-echo "Migration completed!"
\ No newline at end of file