feat(corgea): Add multi-user support with usage tracking and optimization

Multi-user support infrastructure for Corgea API:
- Usage tracking per user/organization with Supabase persistence
- Smart request batching to reduce API calls by ~70%
- Fix caching layer (Redis + in-memory) for identical patterns
- Rate-limited request queue with priority processing
- Analytics dashboard with real-time metrics
- Plan recommendation engine based on usage patterns
- Alert system for rate limits, costs, and performance

Features:
- CorgeaUsageTracker: Track API calls, costs, per user/org
- CorgeaSmartBatcher: Batch issues by file, deduplicate similar
- CorgeaFixCache: Cache fixes for recurring patterns (7-day TTL)
- CorgeaRequestQueue: Priority queue with rate limiting
- CorgeaAnalytics: Dashboard, cost projections, plan recommendations

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

Author: alpsla