feat: add region diversity, HTML report, and transfer pricing

Region Diversity:
- No region specified → same spec from 3 different regions
- Cache key now includes region_preference
- Fixed server_id to use ap.id (pricing) instead of ai.id (instance)

HTML Report:
- New /api/recommend/report endpoint for printable reports
- Supports multi-language (en, ko, ja, zh)
- Displays bandwidth_info with proper KRW formatting

Transfer Pricing:
- bandwidth_info includes overage costs from anvil_transfer_pricing
- available_regions shows alternative regions with prices

Code Quality:
- Extracted region-utils.ts for flexible region matching
- Cleaned up AI prompt (removed obsolete provider references)
- Renamed project to cloud-orchestrator

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

wrangler.toml

@@ -1,4 +1,4 @@
-name = "server-recommend"
+name = "cloud-orchestrator"
 main = "src/index.ts"
 compatibility_date = "2025-01-23"
 compatibility_flags = ["nodejs_compat"]