feat: add media_capabilities to provider definitions (#18)

providers/elevenlabs.toml

@@ -0,0 +1,10 @@
+# ElevenLabs — https://elevenlabs.io
+# Media-only provider (TTS), no LLM models
+
+[provider]
+id = "elevenlabs"
+display_name = "ElevenLabs"
+api_key_env = "ELEVENLABS_API_KEY"
+base_url = "https://api.elevenlabs.io/v1"
+key_required = true
+media_capabilities = ["text_to_speech"]

providers/gemini.toml

@@ -7,6 +7,7 @@ display_name = "Google Gemini"
 api_key_env = "GEMINI_API_KEY"
 base_url = "https://generativelanguage.googleapis.com"
 key_required = true
+media_capabilities = ["image_generation"]
 
 [[models]]
 id = "gemini-3.1-pro-preview"

providers/minimax.toml

@@ -8,6 +8,12 @@ display_name = "MiniMax"
 api_key_env = "MINIMAX_API_KEY"
 base_url = "https://api.minimax.io/v1"
 key_required = true
+media_capabilities = [
+  "image_generation",
+  "text_to_speech",
+  "video_generation",
+  "music_generation",
+]
 
 [provider.regions.china]
 base_url = "https://api.minimaxi.com/v1"

providers/openai.toml

@@ -7,6 +7,7 @@ display_name = "OpenAI"
 api_key_env = "OPENAI_API_KEY"
 base_url = "https://api.openai.com/v1"
 key_required = true
+media_capabilities = ["image_generation", "text_to_speech"]
 
 [[models]]
 id = "gpt-4o"