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

FIXES-APPLIED.md

@@ -11,38 +11,38 @@ Can't reach database server at `ep-tiny-math-a2zsshve-pooler.eu-central-1.aws.ne
 
 ## Root Causes
 
-1. **Multiple PrismaClient instances** across schedulers
-2. **No connection retry logic** for temporary failures
-3. **No connection pooling optimization** for Neon
-4. **Aggressive scheduler intervals** overwhelming database
+1.  **Multiple PrismaClient instances** across schedulers
+2.  **No connection retry logic** for temporary failures
+3.  **No connection pooling optimization** for Neon
+4.  **Aggressive scheduler intervals** overwhelming database
 
 ## Fixes Applied ✅
 
 ### 1. Connection Retry Logic (`lib/database-retry.ts`)
 
-- **Automatic retry** for connection errors
-- **Exponential backoff** (1s → 2s → 4s → 10s max)
-- **Smart error detection** (only retry connection issues)
-- **Configurable retry attempts** (default: 3 retries)
+-   **Automatic retry** for connection errors
+-   **Exponential backoff** (1s → 2s → 4s → 10s max)
+-   **Smart error detection** (only retry connection issues)
+-   **Configurable retry attempts** (default: 3 retries)
 
 ### 2. Enhanced Schedulers
 
-- **Import Processor**: Added retry wrapper around main processing
-- **Session Processor**: Added retry wrapper around AI processing
-- **Graceful degradation** when database is temporarily unavailable
+-   **Import Processor**: Added retry wrapper around main processing
+-   **Session Processor**: Added retry wrapper around AI processing
+-   **Graceful degradation** when database is temporarily unavailable
 
 ### 3. Singleton Pattern Enforced
 
-- **All schedulers now use** `import { prisma } from "./prisma.js"`
-- **No more separate** `new PrismaClient()` instances
-- **Shared connection pool** across all operations
+-   **All schedulers now use** `import { prisma } from "./prisma.js"`
+-   **No more separate** `new PrismaClient()` instances
+-   **Shared connection pool** across all operations
 
 ### 4. Neon-Specific Optimizations
 
-- **Connection limit guidance**: 15 connections (below Neon's 20 limit)
-- **Extended timeouts**: 30s for cold start handling
-- **SSL mode requirements**: `sslmode=require` for Neon
-- **Application naming**: For better monitoring
+-   **Connection limit guidance**: 15 connections (below Neon's 20 limit)
+-   **Extended timeouts**: 30s for cold start handling
+-   **SSL mode requirements**: `sslmode=require` for Neon
+-   **Application naming**: For better monitoring
 
 ## Immediate Actions Needed
 
@@ -83,17 +83,17 @@ pnpm db:check
 
 ## Monitoring
 
-- **Health Endpoint**: `/api/admin/database-health`
-- **Connection Logs**: Enhanced logging for pool events
-- **Retry Logs**: Detailed retry attempt logging
-- **Error Classification**: Retryable vs non-retryable errors
+-   **Health Endpoint**: `/api/admin/database-health`
+-   **Connection Logs**: Enhanced logging for pool events
+-   **Retry Logs**: Detailed retry attempt logging
+-   **Error Classification**: Retryable vs non-retryable errors
 
 ## Files Modified
 
-- `lib/database-retry.ts` - New retry utilities
-- `lib/importProcessor.ts` - Added retry wrapper
-- `lib/processingScheduler.ts` - Added retry wrapper
-- `docs/neon-database-optimization.md` - Neon-specific guide
-- `scripts/check-database-config.ts` - Configuration checker
+-   `lib/database-retry.ts` - New retry utilities
+-   `lib/importProcessor.ts` - Added retry wrapper
+-   `lib/processingScheduler.ts` - Added retry wrapper
+-   `docs/neon-database-optimization.md` - Neon-specific guide
+-   `scripts/check-database-config.ts` - Configuration checker
 
 The connection issues should be significantly reduced with these fixes! 🎯