Phase 3: Add retry logic and robust error handling

[creatiVision]

Phase 3: Retry Logic & Error Handling

The current implementation has basic try/except but lacks:

• Retry with exponential backoff for transient failures (HTTP 429, 500, 504)
• Rate limit awareness (100 req/min)
• Better error messages with BB error codes
• Connection timeout handling

Tasks

• Add retry decorator with exponential backoff (3 attempts, 2s base delay)
• Handle HTTP 429 (rate limit) with automatic retry-after
• Parse and surface BB error codes in error messages
• Add configurable timeouts per endpoint
• Add connection error handling with meaningful messages

Priority: High

Depends on: Phase 1 & 2 (endpoint implementation) complete