docs: feature architecture documentation (batch 4/6 — files 31-40)

[ChitkulLakshya]

Summary

Batch 4 of 6: Teams, Cloudinary, Redis cache, Location, AI chat, Project generation, Calendar, File upload, User search, Google OAuth (files 31-40).

Files Added (10 commits)

#	File	Author
31	team-crud-and-invites.md	eesha264
32	cloudinary-upload-service.md	eesha264
33	redis-cache-layer.md	eesha264
34	location-detection-geoip.md	eesha264
35	architecture-agent-chat.md	eesha264
36	project-generation.md	eesha264
37	calendar-and-holidays.md	eesha264
38	file-upload-service.md	eesha264
39	user-search-and-discovery.md	eesha264
40	google-oauth-integration.md	eesha264

Coverage

• Teams (31): CRUD, invite codes, roles, ownership transfer, activity logs
• Infrastructure (32-34): Cloudinary uploads, Redis cache layer, Geo-IP location detection
• AI (35-36): Architecture agent chat, AI project generation with auto-scaffolding
• Services (37-38): Calendar/holidays API, file upload with Sharp optimization
• Discovery (39): User search with regex, chat request flow
• Auth (40): Google OAuth, Calendar/Meet integration, token encryption

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