[Bug] Anthropic API Error: Text content blocks contain only whitespace

Bug Description

❯ 0000
⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages: text content blocks must contain non-whitespace
text"},"request_id":"req_011CXnc6CpQ9gdAPpCFNWxvF"}

❯ ;
⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages: text content blocks must contain non-whitespace
text"},"request_id":"req_011CXnc6QEVbuDsLEhwjFCx7"}

❯ ;
⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages: text content blocks must contain non-whitespace
text"},"request_id":"req_011CXnc6Ro1DjjGhJZegZSZL"}

❯ ;
⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages: text content blocks must contain non-whitespace
text"},"request_id":"req_011CXnc6TBqy4SVgiy6AUpTB"}

❯ ;
⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages: text content blocks must contain non-whitespace
text"},"request_id":"req_011CXnc6VF82Zpd9hWPRaWrp"}
…
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