test(openai): cover both temperature branches behind supportsTemperature gate (#215)

Add two tests so the temperature expression's branches are fully exercised:
- explicit modelTemperature (left side of the `??`)
- deepseek-reasoner default of DEEP_SEEK_DEFAULT_TEMPERATURE (truthy ternary)

Closes the partial-branch gap codecov/patch flagged on line 162.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: proyectoauraorg

src/api/providers/__tests__/openai.spec.ts

@@ -4,7 +4,7 @@ import { OpenAiHandler, getOpenAiModels } from "../openai"
 import { ApiHandlerOptions } from "../../../shared/api"
 import { Anthropic } from "@anthropic-ai/sdk"
 import OpenAI from "openai"
-import { openAiModelInfoSaneDefaults } from "@roo-code/types"
+import { openAiModelInfoSaneDefaults, DEEP_SEEK_DEFAULT_TEMPERATURE } from "@roo-code/types"
 import { Package } from "../../../shared/package"
 import axios from "axios"
 
@@ -418,6 +418,26 @@ describe("OpenAiHandler", () => {
 			expect(callArgs).toHaveProperty("temperature")
 		})
 
+		it("should use the configured modelTemperature when supportsTemperature is not false", async () => {
+			const customTempHandler = new OpenAiHandler({ ...mockOptions, modelTemperature: 0.5 })
+			const stream = customTempHandler.createMessage(systemPrompt, messages)
+			for await (const _chunk of stream) {
+			}
+			expect(mockCreate).toHaveBeenCalled()
+			const callArgs = mockCreate.mock.calls[0][0]
+			expect(callArgs.temperature).toBe(0.5)
+		})
+
+		it("should default to DEEP_SEEK_DEFAULT_TEMPERATURE for deepseek-reasoner models", async () => {
+			const deepseekHandler = new OpenAiHandler({ ...mockOptions, openAiModelId: "deepseek-reasoner" })
+			const stream = deepseekHandler.createMessage(systemPrompt, messages)
+			for await (const _chunk of stream) {
+			}
+			expect(mockCreate).toHaveBeenCalled()
+			const callArgs = mockCreate.mock.calls[0][0]
+			expect(callArgs.temperature).toBe(DEEP_SEEK_DEFAULT_TEMPERATURE)
+		})
+
 		it("should include max_tokens when includeMaxTokens is true", async () => {
 			const optionsWithMaxTokens: ApiHandlerOptions = {
 				...mockOptions,