fix: providers config for azure, bedrock, and vertex (#822)

* fix: providers config for azure, bedrock, and vertex

* chore: improve changelog

* chore: fix CI

src/constants/providers.js

@@ -0,0 +1,32 @@
+/**
+ * Provider validation constants
+ * Defines which providers should be validated against the supported-models.json file
+ */
+
+// Providers that have predefined model lists and should be validated
+export const VALIDATED_PROVIDERS = [
+	'anthropic',
+	'openai',
+	'google',
+	'perplexity',
+	'xai',
+	'mistral'
+];
+
+// Custom providers object for easy named access
+export const CUSTOM_PROVIDERS = {
+	AZURE: 'azure',
+	VERTEX: 'vertex',
+	BEDROCK: 'bedrock',
+	OPENROUTER: 'openrouter',
+	OLLAMA: 'ollama'
+};
+
+// Custom providers array (for backward compatibility and iteration)
+export const CUSTOM_PROVIDERS_ARRAY = Object.values(CUSTOM_PROVIDERS);
+
+// All known providers (for reference)
+export const ALL_PROVIDERS = [
+	...VALIDATED_PROVIDERS,
+	...CUSTOM_PROVIDERS_ARRAY
+];