chore: sync model pricing from OpenRouter API

providers/rekaai.toml

@@ -0,0 +1,18 @@
+# rekaai — auto-generated from OpenRouter API
+
+[provider]
+id = "rekaai"
+display_name = "Rekaai"
+api_key_env = "REKAAI_API_KEY"
+base_url = ""
+key_required = true
+
+[[models]]
+id = "reka-flash-3"
+display_name = "Reka: Flash 3"
+tier = "fast"
+context_window = 65536
+max_output_tokens = 65536
+input_cost_per_m = 0.1
+output_cost_per_m = 0.2
+supports_streaming = true