feat(llm): pass strict through tool definitions for Codex parity (#33392)

packages/opencode/test/provider/transform.test.ts

@@ -4,6 +4,7 @@ import { ProviderTransform } from "@/provider/transform"
 import { LLMRequestPrep } from "@/session/llm/request"
 import { ProviderV2 } from "@opencode-ai/core/provider"
 import { ModelV2 } from "@opencode-ai/core/model"
+import { jsonSchema } from "ai"
 
 describe("ProviderTransform.options - setCacheKey", () => {
   const sessionID = "test-session-123"
@@ -384,7 +385,12 @@ describe("ProviderTransform.options - gpt-5 textVerbosity", () => {
         } as any,
         system: [],
         messages: [{ role: "user", content: "Hello" }],
-        tools: {},
+        tools: {
+          lookup: {
+            description: "Look up a value",
+            inputSchema: jsonSchema({ type: "object", properties: {} }),
+          },
+        },
         provider: { id: "azure", options: { useCompletionUrls: true } } as any,
         auth: undefined,
         plugin: {
@@ -399,6 +405,7 @@ describe("ProviderTransform.options - gpt-5 textVerbosity", () => {
     expect(result.params.options.reasoningEffort).toBe("high")
     expect(result.params.options.reasoningSummary).toBeUndefined()
     expect(result.params.options.include).toBeUndefined()
+    expect(result.tools.lookup.strict).toBe(false)
   })
 
   test("gpt-5.1 should have textVerbosity set to low", () => {