fix: add Databricks models databricks-gpt-5-4 +2 more

[github-actions]

fix: add Databricks models databricks-gpt-5-4 +2 more

Closes #638

Source issue: #638

Summary

Field	Value
Provider	databricks
Primary model	databricks-gpt-5-4
Changed models	databricks-gpt-5-4 databricks-gpt-5-4-nano databricks-gpt-5-2
Added models	databricks-gpt-5-4 databricks-gpt-5-4-nano databricks-gpt-5-2
Updated models	None
Verification sources	1 2

Verified metadata

Model	Display name	Parent	Providers	Format	Flavor	Token limits	Pricing	Lifecycle
databricks-gpt-5-4	GPT-5.4		databricks	openai	chat	input=400000, output=128000	n/a	multimodal=true
databricks-gpt-5-4-nano	GPT-5.4 nano		databricks	openai	chat	input=400000, output=128000	n/a	multimodal=true
databricks-gpt-5-2	GPT-5.2		databricks	openai	chat	input=400000, output=128000	n/a	multimodal=true

Verification notes

No LLM verification step ran — model metadata was already complete in the issue.

sync_models vs proposed update

sync_models cross-check found differences. Official provider verification was used for the applied values, and sync_models discrepancies are listed below for review.

Model	Field	Proposed update	sync_models	sync_models source models
databricks-gpt-5-4	catalog entry	present	missing	None
databricks-gpt-5-4-nano	catalog entry	present	missing	None
databricks-gpt-5-2	catalog entry	present	missing	None

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