feat: standardize payment kit configuration and workflows

.changeset/config.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.0.0/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "develop",
+  "updateInternalDependencies": "patch",
+  "ignore": [],
+  "repo": "ciscode/nest-js-developer-kit",
+  "preState": null
+}

.changeset/paymentkit_71368.md

@@ -0,0 +1,13 @@
+---
+'@ciscode/paymentkit': minor
+---
+
+## Summary
+
+Standardized ESLint 9, Jest configuration, and GitHub workflows across the codebase with comprehensive bug fixes
+
+## Changes
+
+- Updated package configuration and workflows
+- Enhanced code quality and automation tooling
+- Improved CI/CD integration and monitoring capabilities

.env.example

@@ -0,0 +1,36 @@
+# PaymentKit Environment Configuration
+# Copy this file to .env and update with your actual values
+
+# Application
+NODE_ENV=development
+LOG_LEVEL=debug
+PORT=3000
+
+# Stripe Configuration
+STRIPE_PUBLIC_KEY=pk_test_your-public-key
+STRIPE_SECRET_KEY=sk_test_your-secret-key
+STRIPE_WEBHOOK_SECRET=whsec_your-webhook-secret
+
+# PayPal Configuration
+PAYPAL_CLIENT_ID=your-client-id
+PAYPAL_CLIENT_SECRET=your-client-secret
+PAYPAL_MODE=sandbox
+PAYPAL_WEBHOOK_ID=your-webhook-id
+
+# Database (for payment records)
+MONGODB_URI=mongodb://localhost:27017/paymentkit-dev
+POSTGRES_URI=postgresql://user:password@localhost:5432/paymentkit-dev
+
+# Idempotency & Retries
+IDEMPOTENCY_KEY_EXPIRY_HOURS=24
+MAX_RETRY_ATTEMPTS=3
+RETRY_DELAY_MS=1000
+
+# Webhook Configuration
+WEBHOOK_SIGNATURE_VERIFICATION=true
+WEBHOOK_BACKOFF_STRATEGY=exponential
+WEBHOOK_MAX_RETRIES=5
+
+# Currency & Formatting
+DEFAULT_CURRENCY=USD
+AMOUNT_DECIMAL_PLACES=2

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,12 +1,12 @@
 name: Bug Report
 description: Report a bug or unexpected behavior
-title: "[Bug]: "
+title: '[Bug]: '
 labels: [bug]
 body:
   - type: input
     attributes:
       label: PaymentKit Version
-      placeholder: "v1.1.0"
+      placeholder: 'v1.1.0'
     validations:
       required: true
 
@@ -31,4 +31,4 @@ body:
         - PayPal
         - Both
     validations:
-      required: true
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,6 +1,6 @@
 name: Feature Request
 description: Suggest a new feature
-title: "[Feature]: "
+title: '[Feature]: '
 labels: [enhancement]
 body:
   - type: textarea
@@ -13,4 +13,4 @@ body:
     attributes:
       label: Proposed Solution
     validations:
-      required: true
+      required: true