feat: pluggable image-to-text service with OpenAI vision backend (#1038)

Adds a full-stack image description service: schema, base class,                                                                  
OpenAI backend, gateway dispatch, client APIs (sync/async REST +
websocket), tg-describe-image CLI, IAM capability, and specs.                                                                     
                                                                                                                                    
Closes #879
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Sunny Yang 2026-07-12 05:47:04 -06:00 committed by GitHub
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# Image-to-text. Outbound vision-model calls. Isolated for the same
# reason as the LLM group: the upstream API is the most likely thing to
# need restart (provider changes, model changes, API flakiness).
_defaults: &defaults
pubsub_backend: rabbitmq
rabbitmq_host: localhost
log_level: INFO
processors:
- class: trustgraph.model.image_to_text.openai.Processor
params:
<<: *defaults
id: image-to-text
max_output: 4096