feat: complete development environment setup and code quality improvements

- Set up pre-commit hooks with husky and lint-staged for automated code quality
- Improved TypeScript type safety by replacing 'any' types with proper generics
- Fixed markdown linting violations (MD030 spacing) across all documentation
- Fixed compound adjective hyphenation in technical documentation
- Fixed invalid JSON union syntax in API documentation examples
- Automated code formatting and linting on commit
- Enhanced error handling with better type constraints
- Configured biome and markdownlint for consistent code style
- All changes verified with successful production build

docs/csp-metrics-api.md

@@ -6,11 +6,11 @@ This document describes the Content Security Policy (CSP) metrics and violation
 
 The CSP Metrics API provides comprehensive monitoring of Content Security Policy violations, including:
 
-- Real-time violation tracking and metrics
-- Bypass attempt detection and risk assessment
-- Policy optimization recommendations
-- Historical trend analysis
-- Export capabilities for security analysis
+-   Real-time violation tracking and metrics
+-   Bypass attempt detection and risk assessment
+-   Policy optimization recommendations
+-   Historical trend analysis
+-   Export capabilities for security analysis
 
 ## API Endpoints
 
@@ -24,7 +24,7 @@ POST /api/csp-report
 
 #### Request Headers
 
-- `Content-Type`: `application/csp-report` or `application/json`
+-   `Content-Type`: `application/csp-report` or `application/json`
 
 #### Request Body (Automatic from Browser)
 
@@ -43,10 +43,10 @@ POST /api/csp-report
 
 #### Features
 
-- **Rate Limiting**: 10 reports per minute per IP
-- **Risk Assessment**: Automatic classification of violation severity
-- **Bypass Detection**: Identifies potential CSP bypass attempts
-- **Real-time Processing**: Immediate analysis and alerting
+-   **Rate Limiting**: 10 reports per minute per IP
+-   **Risk Assessment**: Automatic classification of violation severity
+-   **Bypass Detection**: Identifies potential CSP bypass attempts
+-   **Real-time Processing**: Immediate analysis and alerting
 
 ### CSP Metrics API
 
@@ -67,11 +67,11 @@ GET /api/csp-metrics
 
 #### Time Range Options
 
-- `1h` - Last 1 hour
-- `6h` - Last 6 hours
-- `24h` - Last 24 hours (default)
-- `7d` - Last 7 days
-- `30d` - Last 30 days
+-   `1h` - Last 1 hour
+-   `6h` - Last 6 hours
+-   `24h` - Last 24 hours (default)
+-   `7d` - Last 7 days
+-   `30d` - Last 30 days
 
 #### Example Request
 
@@ -165,11 +165,11 @@ console.log(result.recommendations); // array of suggestions
 
 The service automatically assesses violation risk based on:
 
-- **Directive Type**: Script violations are higher risk than style violations
-- **Source Pattern**: External domains vs inline vs data URIs
-- **Bypass Indicators**: Known CSP bypass techniques
-- **Frequency**: Repeated violations from same source
-- **Geographic Factors**: Unusual source locations
+-   **Directive Type**: Script violations are higher risk than style violations
+-   **Source Pattern**: External domains vs inline vs data URIs
+-   **Bypass Indicators**: Known CSP bypass techniques
+-   **Frequency**: Repeated violations from same source
+-   **Geographic Factors**: Unusual source locations
 
 #### 3. Bypass Detection
 
@@ -191,10 +191,10 @@ const bypassPatterns = [
 
 Based on violation patterns, the service provides actionable recommendations:
 
-- **Tighten Policies**: Suggest removing broad allowlists
-- **Add Domains**: Recommend allowing legitimate external resources
-- **Implement Nonces**: Suggest nonce-based policies for inline content
-- **Upgrade Directives**: Recommend modern CSP features
+-   **Tighten Policies**: Suggest removing broad allowlists
+-   **Add Domains**: Recommend allowing legitimate external resources
+-   **Implement Nonces**: Suggest nonce-based policies for inline content
+-   **Upgrade Directives**: Recommend modern CSP features
 
 ## Violation Analysis
 
@@ -405,48 +405,50 @@ CSP_ALERT_THRESHOLD=5              # violations per 10 minutes
 
 ### Rate Limiting
 
-- **10 reports per minute per IP** prevents spam attacks
-- **Exponential backoff** for repeated violations from same source
-- **Memory cleanup** removes old violations automatically
+-   **10 reports per minute per IP** prevents spam attacks
+-   **Exponential backoff** for repeated violations from same source
+-   **Memory cleanup** removes old violations automatically
 
 ### Memory Management
 
-- **Violation buffer** limited to 1 hour of data in memory
-- **Automatic cleanup** runs every 100 requests (1% probability)
-- **Efficient storage** using Map data structures
+-   **Violation buffer** limited to 1 hour of data in memory
+-   **Automatic cleanup** runs every 100 requests (1% probability)
+-   **Efficient storage** using Map data structures
 
 ### Database Impact
 
-- **No persistent storage** for real-time metrics (memory only)
-- **Optional logging** to database for long-term analysis
-- **Indexed queries** for historical data retrieval
+-   **No persistent storage** for real-time metrics (memory only)
+-   **Optional logging** to database for long-term analysis
+-   **Indexed queries** for historical data retrieval
 
 ## Security Considerations
 
 ### Privacy Protection
 
 **⚠️ Data Collection Notice:**
-- **IP addresses** are collected and stored in memory for security monitoring
-- **User agent strings** are stored for browser compatibility analysis
-- **Legal basis**: Legitimate interest for security incident detection and prevention
-- **Retention**: In-memory storage only, automatically purged after 7 days or application restart
-- **Data minimization**: Only violation-related metadata is retained, not page content
+
+-   **IP addresses** are collected and stored in memory for security monitoring
+-   **User agent strings** are stored for browser compatibility analysis
+-   **Legal basis**: Legitimate interest for security incident detection and prevention
+-   **Retention**: In-memory storage only, automatically purged after 7 days or application restart
+-   **Data minimization**: Only violation-related metadata is retained, not page content
 
 **Planned Privacy Enhancements:**
-- IP anonymization options for GDPR compliance (roadmap)
-- User agent sanitization to remove sensitive information (roadmap)
 
-### Rate Limiting Protection
+-   IP anonymization options for GDPR compliance (roadmap)
+-   User agent sanitization to remove sensitive information (roadmap)
 
-- **Per-IP limits** prevent DoS attacks on reporting endpoint
-- **Content-type validation** ensures proper report format
-- **Request size limits** prevent memory exhaustion
+### Rate-Limiting Protection
+
+-   **Per-IP limits** prevent DoS attacks on reporting endpoint
+-   **Content-type validation** ensures proper report format
+-   **Request size limits** prevent memory exhaustion
 
 ### False Positive Handling
 
-- **Learning mode** for new deployments
-- **Whitelist support** for known legitimate violations
-- **Risk score adjustment** based on historical patterns
+-   **Learning mode** for new deployments
+-   **Whitelist support** for known legitimate violations
+-   **Risk score adjustment** based on historical patterns
 
 ## Troubleshooting
 
@@ -495,10 +497,10 @@ if (duration > 2000) {
 
 ## Related Documentation
 
-- [Enhanced CSP Implementation](./security/enhanced-csp.md)
-- [Security Monitoring](./security-monitoring.md)
-- [Security Headers](./security-headers.md)
-- [Rate Limiting](../lib/rateLimiter.ts)
+-   [Enhanced CSP Implementation](./security/enhanced-csp.md)
+-   [Security Monitoring](./security-monitoring.md)
+-   [Security Headers](./security-headers.md)
+-   [Rate Limiting](../lib/rateLimiter.ts)
 
 ## API Reference Summary