feat: initial model catalog with 196 models across 39 providers

Community-maintained TOML catalog for LibreFang. New models can be added
via PR without requiring a LibreFang binary release.

Includes validation script, bilingual docs, and GitHub templates.

providers/openai.toml

@@ -0,0 +1,245 @@
+# OpenAI — https://openai.com
+# Models: 18 (including 2 Codex variants)
+
+[provider]
+id = "openai"
+display_name = "OpenAI"
+api_key_env = "OPENAI_API_KEY"
+base_url = "https://api.openai.com/v1"
+key_required = true
+
+[[models]]
+id = "gpt-4o"
+display_name = "GPT-4o"
+tier = "smart"
+context_window = 128000
+max_output_tokens = 16384
+input_cost_per_m = 2.50
+output_cost_per_m = 10.0
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = ["gpt4", "gpt4o"]
+
+[[models]]
+id = "gpt-4o-mini"
+display_name = "GPT-4o Mini"
+tier = "fast"
+context_window = 128000
+max_output_tokens = 16384
+input_cost_per_m = 0.15
+output_cost_per_m = 0.60
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = ["gpt4-mini"]
+
+[[models]]
+id = "gpt-4.1"
+display_name = "GPT-4.1"
+tier = "frontier"
+context_window = 1047576
+max_output_tokens = 32768
+input_cost_per_m = 2.00
+output_cost_per_m = 8.00
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-4.1-mini"
+display_name = "GPT-4.1 Mini"
+tier = "balanced"
+context_window = 1047576
+max_output_tokens = 32768
+input_cost_per_m = 0.40
+output_cost_per_m = 1.60
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-4.1-nano"
+display_name = "GPT-4.1 Nano"
+tier = "fast"
+context_window = 1047576
+max_output_tokens = 32768
+input_cost_per_m = 0.10
+output_cost_per_m = 0.40
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "o3"
+display_name = "o3"
+tier = "frontier"
+context_window = 200000
+max_output_tokens = 100000
+input_cost_per_m = 2.00
+output_cost_per_m = 8.00
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "o3-mini"
+display_name = "o3-mini"
+tier = "smart"
+context_window = 200000
+max_output_tokens = 100000
+input_cost_per_m = 1.10
+output_cost_per_m = 4.40
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "o4-mini"
+display_name = "o4-mini"
+tier = "smart"
+context_window = 200000
+max_output_tokens = 100000
+input_cost_per_m = 1.10
+output_cost_per_m = 4.40
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-4-turbo"
+display_name = "GPT-4 Turbo"
+tier = "smart"
+context_window = 128000
+max_output_tokens = 4096
+input_cost_per_m = 10.00
+output_cost_per_m = 30.00
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-3.5-turbo"
+display_name = "GPT-3.5 Turbo"
+tier = "fast"
+context_window = 16385
+max_output_tokens = 4096
+input_cost_per_m = 0.50
+output_cost_per_m = 1.50
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-5"
+display_name = "GPT-5"
+tier = "frontier"
+context_window = 400000
+max_output_tokens = 128000
+input_cost_per_m = 1.25
+output_cost_per_m = 10.0
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-5-mini"
+display_name = "GPT-5 Mini"
+tier = "balanced"
+context_window = 400000
+max_output_tokens = 128000
+input_cost_per_m = 0.25
+output_cost_per_m = 2.0
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = ["gpt5-mini"]
+
+[[models]]
+id = "gpt-5-nano"
+display_name = "GPT-5 Nano"
+tier = "fast"
+context_window = 400000
+max_output_tokens = 128000
+input_cost_per_m = 0.05
+output_cost_per_m = 0.40
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-5.1"
+display_name = "GPT-5.1"
+tier = "frontier"
+context_window = 400000
+max_output_tokens = 128000
+input_cost_per_m = 1.25
+output_cost_per_m = 10.0
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+[[models]]
+id = "gpt-5.2"
+display_name = "GPT-5.2"
+tier = "frontier"
+context_window = 400000
+max_output_tokens = 128000
+input_cost_per_m = 1.75
+output_cost_per_m = 14.0
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = ["gpt5"]
+
+[[models]]
+id = "gpt-5.2-pro"
+display_name = "GPT-5.2 Pro"
+tier = "frontier"
+context_window = 400000
+max_output_tokens = 128000
+input_cost_per_m = 1.75
+output_cost_per_m = 14.0
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = []
+
+# Codex variants (same OpenAI driver & API key)
+
+[[models]]
+id = "codex/gpt-4.1"
+display_name = "GPT-4.1 (Codex)"
+tier = "frontier"
+context_window = 1047576
+max_output_tokens = 32768
+input_cost_per_m = 2.00
+output_cost_per_m = 8.00
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = ["codex", "codex-4.1"]
+
+[[models]]
+id = "codex/o4-mini"
+display_name = "o4-mini (Codex)"
+tier = "smart"
+context_window = 200000
+max_output_tokens = 100000
+input_cost_per_m = 1.10
+output_cost_per_m = 4.40
+supports_tools = true
+supports_vision = true
+supports_streaming = true
+aliases = ["codex-o4"]