fix: prevent duplicate LM Studio models by only showing loaded models

- Remove listDownloadedModels() call and its try/catch block
- Only fetch loaded models as they are the only ones that can process requests
- Use model.path as consistent key to prevent duplicates
- Update tests to reflect the simplified implementation

This fixes the issue where models appeared twice in the Provider Configuration
Profile when they were both downloaded and loaded in LM Studio.

Fixes #6954

src/api/providers/fetchers/__tests__/lmstudio.test.ts

@@ -11,16 +11,12 @@ const mockedAxios = axios as any
 // Mock @lmstudio/sdk
 const mockGetModelInfo = vi.fn()
 const mockListLoaded = vi.fn()
-const mockListDownloadedModels = vi.fn()
 vi.mock("@lmstudio/sdk", () => {
 	return {
 		LMStudioClient: vi.fn().mockImplementation(() => ({
 			llm: {
 				listLoaded: mockListLoaded,
 			},
-			system: {
-				listDownloadedModels: mockListDownloadedModels,
-			},
 		})),
 	}
 })
@@ -32,7 +28,6 @@ describe("LMStudio Fetcher", () => {
 		MockedLMStudioClientConstructor.mockClear()
 		mockListLoaded.mockClear()
 		mockGetModelInfo.mockClear()
-		mockListDownloadedModels.mockClear()
 	})
 
 	describe("parseLMStudioModel", () => {
@@ -93,40 +88,8 @@ describe("LMStudio Fetcher", () => {
 			trainedForToolUse: false, // Added
 		}
 
-		it("should fetch downloaded models using system.listDownloadedModels", async () => {
-			const mockLLMInfo: LLMInfo = {
-				type: "llm" as const,
-				modelKey: "mistralai/devstral-small-2505",
-				format: "safetensors",
-				displayName: "Devstral Small 2505",
-				path: "mistralai/devstral-small-2505",
-				sizeBytes: 13277565112,
-				architecture: "mistral",
-				vision: false,
-				trainedForToolUse: false,
-				maxContextLength: 131072,
-			}
-
+		it("should fetch only loaded models and use model.path as key", async () => {
 			mockedAxios.get.mockResolvedValueOnce({ data: { status: "ok" } })
-			mockListDownloadedModels.mockResolvedValueOnce([mockLLMInfo])
-
-			const result = await getLMStudioModels(baseUrl)
-
-			expect(mockedAxios.get).toHaveBeenCalledTimes(1)
-			expect(mockedAxios.get).toHaveBeenCalledWith(`${baseUrl}/v1/models`)
-			expect(MockedLMStudioClientConstructor).toHaveBeenCalledTimes(1)
-			expect(MockedLMStudioClientConstructor).toHaveBeenCalledWith({ baseUrl: lmsUrl })
-			expect(mockListDownloadedModels).toHaveBeenCalledTimes(1)
-			expect(mockListDownloadedModels).toHaveBeenCalledWith("llm")
-			expect(mockListLoaded).toHaveBeenCalled() // we now call it to get context data
-
-			const expectedParsedModel = parseLMStudioModel(mockLLMInfo)
-			expect(result).toEqual({ [mockLLMInfo.path]: expectedParsedModel })
-		})
-
-		it("should fall back to listLoaded when listDownloadedModels fails", async () => {
-			mockedAxios.get.mockResolvedValueOnce({ data: { status: "ok" } })
-			mockListDownloadedModels.mockRejectedValueOnce(new Error("Method not available"))
 			mockListLoaded.mockResolvedValueOnce([{ getModelInfo: mockGetModelInfo }])
 			mockGetModelInfo.mockResolvedValueOnce(mockRawModel)
 
@@ -136,11 +99,11 @@ describe("LMStudio Fetcher", () => {
 			expect(mockedAxios.get).toHaveBeenCalledWith(`${baseUrl}/v1/models`)
 			expect(MockedLMStudioClientConstructor).toHaveBeenCalledTimes(1)
 			expect(MockedLMStudioClientConstructor).toHaveBeenCalledWith({ baseUrl: lmsUrl })
-			expect(mockListDownloadedModels).toHaveBeenCalledTimes(1)
 			expect(mockListLoaded).toHaveBeenCalledTimes(1)
 
 			const expectedParsedModel = parseLMStudioModel(mockRawModel)
-			expect(result).toEqual({ [mockRawModel.modelKey]: expectedParsedModel })
+			// Now using model.path as the key instead of modelKey
+			expect(result).toEqual({ [mockRawModel.path]: expectedParsedModel })
 		})
 
 		it("should use default baseUrl if an empty string is provided", async () => {
@@ -212,7 +175,7 @@ describe("LMStudio Fetcher", () => {
 			consoleInfoSpy.mockRestore()
 		})
 
-		it("should return an empty object and log error if listDownloadedModels fails", async () => {
+		it("should return an empty object and log error if listLoaded fails", async () => {
 			const consoleErrorSpy = vi.spyOn(console, "error").mockImplementation(() => {})
 			const listError = new Error("LMStudio SDK internal error")
 

src/api/providers/fetchers/lmstudio.ts

@@ -71,24 +71,15 @@ export async function getLMStudioModels(baseUrl = "http://localhost:1234"): Prom
 
 		const client = new LMStudioClient({ baseUrl: lmsUrl })
 
-		// First, try to get all downloaded models
-		try {
-			const downloadedModels = await client.system.listDownloadedModels("llm")
-			for (const model of downloadedModels) {
-				// Use the model path as the key since that's what users select
-				models[model.path] = parseLMStudioModel(model)
-			}
-		} catch (error) {
-			console.warn("Failed to list downloaded models, falling back to loaded models only")
-		}
-		// We want to list loaded models *anyway* since they provide valuable extra info (context size)
+		// Only get loaded models - these are the only ones that can actually process requests
 		const loadedModels = (await client.llm.listLoaded().then((models: LLM[]) => {
 			return Promise.all(models.map((m) => m.getModelInfo()))
 		})) as Array<LLMInstanceInfo>
 
 		for (const lmstudioModel of loadedModels) {
-			models[lmstudioModel.modelKey] = parseLMStudioModel(lmstudioModel)
-			modelsWithLoadedDetails.add(lmstudioModel.modelKey)
+			// Use model.path as the consistent key to prevent duplicates
+			models[lmstudioModel.path] = parseLMStudioModel(lmstudioModel)
+			modelsWithLoadedDetails.add(lmstudioModel.path)
 		}
 	} catch (error) {
 		if (error.code === "ECONNREFUSED") {