feat: add image support for moonshotai/kimi-k2:free model

- Add OPEN_ROUTER_IMAGE_SUPPORT_MODELS set to handle models with image support not correctly reported by OpenRouter API
- Update parseOpenRouterModel to check hardcoded image support models
- Add test coverage for image support functionality

Fixes #5877

Author: roomote

packages/types/src/providers/openrouter.ts

@@ -88,3 +88,8 @@ export const OPEN_ROUTER_REASONING_BUDGET_MODELS = new Set([
 	"anthropic/claude-3.7-sonnet:thinking",
 	"google/gemini-2.5-flash-preview-05-20:thinking",
 ])
+
+// Models that support image input but may not be correctly reported by OpenRouter API
+export const OPEN_ROUTER_IMAGE_SUPPORT_MODELS = new Set([
+	"moonshotai/kimi-k2:free",
+])

src/api/providers/fetchers/__tests__/openrouter.spec.ts

@@ -9,6 +9,7 @@ import {
 	OPEN_ROUTER_COMPUTER_USE_MODELS,
 	OPEN_ROUTER_REASONING_BUDGET_MODELS,
 	OPEN_ROUTER_REQUIRED_REASONING_BUDGET_MODELS,
+	OPEN_ROUTER_IMAGE_SUPPORT_MODELS,
 } from "@roo-code/types"
 
 import { getOpenRouterModelEndpoints, getOpenRouterModels } from "../openrouter"
@@ -148,6 +149,15 @@ describe("OpenRouter API", () => {
 					.sort(),
 			).toEqual(expectedRequiredReasoningBudgetModels)
 
+			// Test image support for hardcoded models
+			expect(
+				Object.entries(models)
+					.filter(([_, model]) => model.supportsImages)
+					.map(([id, _]) => id)
+					.filter((id) => OPEN_ROUTER_IMAGE_SUPPORT_MODELS.has(id))
+					.sort(),
+			).toEqual(Array.from(OPEN_ROUTER_IMAGE_SUPPORT_MODELS).sort())
+
 			expect(models["anthropic/claude-3.7-sonnet"]).toEqual({
 				maxTokens: 8192,
 				contextWindow: 200000,

src/api/providers/fetchers/openrouter.ts

@@ -7,6 +7,7 @@ import {
 	OPEN_ROUTER_COMPUTER_USE_MODELS,
 	OPEN_ROUTER_REASONING_BUDGET_MODELS,
 	OPEN_ROUTER_REQUIRED_REASONING_BUDGET_MODELS,
+	OPEN_ROUTER_IMAGE_SUPPORT_MODELS,
 	anthropicModels,
 } from "@roo-code/types"
 
@@ -193,7 +194,7 @@ export const parseOpenRouterModel = ({
 	const modelInfo: ModelInfo = {
 		maxTokens: maxTokens || Math.ceil(model.context_length * 0.2),
 		contextWindow: model.context_length,
-		supportsImages: modality?.includes("image") ?? false,
+		supportsImages: modality?.includes("image") ?? OPEN_ROUTER_IMAGE_SUPPORT_MODELS.has(id) ?? false,
 		supportsPromptCache,
 		inputPrice: parseApiPrice(model.pricing?.prompt),
 		outputPrice: parseApiPrice(model.pricing?.completion),