refactor: major architecture improvements and security hardening

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## Security Fixes
- Fix XSS vulnerability in report.ts with escapeHtml()
- Add cache data integrity validation
- Add region_preference input validation (max 10 items, 50 chars each)
- Replace `any` types with `unknown` + type guards

## Architecture Refactoring
- Split utils.ts (801 lines) into 6 modules: http, validation, bandwidth, cache, ai, exchange-rate
- Extract AI logic to src/services/ai-service.ts (recommend.ts 49% reduction)
- Add Repository pattern: src/repositories/AnvilServerRepository.ts
- Reduce code duplication in DB queries

## New Features
- AI fallback: rule-based recommendations when OpenAI unavailable
- Vitest testing: 55 tests (utils.test.ts, bandwidth.test.ts)
- Duplicate server prevention in AI recommendations

## Files Added
- src/utils/{index,http,validation,bandwidth,cache,ai,exchange-rate}.ts
- src/services/ai-service.ts
- src/repositories/AnvilServerRepository.ts
- src/__tests__/{utils,bandwidth}.test.ts
- vitest.config.ts

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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kappa

2026-01-26 03:29:12 +09:00

parent 411cde4801

commit 4b00c73d96

20 changed files with 3253 additions and 1537 deletions

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