provider(gmicloud): add Opus 4.8 and GPT-5.5

providers/gmicloud/models/anthropic/claude-opus-4.8.toml

@@ -0,0 +1,9 @@
+base_model = "anthropic/claude-opus-4-8"
+# GMI documents Opus 4.8 as defaulting to high effort, with xhigh for Claude Code
+# and max via API parameters.
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high", "xhigh", "max"] }]
+
+[cost]
+input = 5
+output = 25
+cache_read = 0.5

providers/gmicloud/models/openai/gpt-5.5.toml

@@ -0,0 +1,8 @@
+base_model = "openai/gpt-5.5"
+# GMI's Responses endpoint sends reasoning effort as reasoning = { effort = "low" }.
+reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh"] }]
+
+[cost]
+input = 5
+output = 30
+cache_read = 0.5