feat: add flexible instance configuration support with security improvements

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- Add InstanceContext interface for runtime configuration
- Implement dual-mode API client (singleton + instance-specific)
- Add secure SHA-256 hashing for cache keys
- Implement LRU cache with TTL (100 instances, 30min expiry)
- Add comprehensive input validation for URLs and API keys
- Sanitize all logging to prevent API key exposure
- Fix session context cleanup and memory management
- Add comprehensive security and integration tests
- Maintain full backward compatibility for single-player usage

Security improvements based on code review:
- Cache keys are now cryptographically hashed
- API credentials never appear in logs
- Memory-bounded cache prevents resource exhaustion
- Input validation rejects invalid/placeholder values
- Proper cleanup of orphaned session contexts

🤖 Generated with Claude Code

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

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czlonkowski

2025-09-19 16:23:30 +02:00

parent 70653b16bd

commit 34fbdc30fe

11 changed files with 893 additions and 2571 deletions

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