React Js, Next Js Technology Upgradation (R&D)

spliting modules to small size for AI debugging and code optimizations

`policyService.js` was 1066 lines, exceeding the 300-line limit for effective AI editing.
services/policy/
├── purposeMatcher.js (115 lines) - Purpose fuzzy matching
├── policyFetcher.js (220 lines) - API calls & caching
├── policyFilter.js (~250 lines) - Multi-stage pipeline
├── policyValidator.js (~200 lines) - Flight validation
├── policyFormatter.js (~150 lines) - Data transformation
└── index.js

- All files under 300 lines (AI-friendly)
- Single responsibility per module
- Easier to test and maintain
- Backward compatible migration

The `htmlGenerator.js` file was 612 lines and 30KB
services/
├── htmlGenerator.js (REFACTORED - ~180 lines)
└── html/
├── formatters.js (~80 lines)
├── policyBanner.js (~160 lines)
├── flightCard.js (~380 lines)
└── htmlTemplate.js (~85 lines)

Policy service refactoring complete (2/6 modules)

`aiProcessor.js` was 469 lines and handled multiple responsibilities (AI interaction, prompt building, validation, retry logic), making it hard to maintain and prone to modification risks.
services/
├── aiProcessor.js (Validation & Orchestration)
├── aiClient.js (Gemini API Interaction & Retry Logic)
└── promptBuilder.js (Prompt Construction & System Instructions)

The `htmlGenerator.js`

`services/html/htmlTemplate.js` - Email headers and footers now use `brandingConfig.PROJECT_NAME`
`services/emailSender.js` - Email sender name now dynamic
`public/search.html` - Generic title "Flight Search Simulator"
`public/js/theme.js` - Generic comment

all deprication warnings cleareed due to the fragmentation of modules
while labeling issue fixed