fix: support AWS GovCloud and China region ARNs in Bedrock provider

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

@@ -36,7 +36,12 @@ vi.mock("@aws-sdk/client-bedrock-runtime", () => {
 
 import { AwsBedrockHandler } from "../bedrock"
 import { ConverseStreamCommand, BedrockRuntimeClient, ConverseCommand } from "@aws-sdk/client-bedrock-runtime"
-import { BEDROCK_1M_CONTEXT_MODEL_IDS, BEDROCK_SERVICE_TIER_MODEL_IDS, bedrockModels, ApiProviderError } from "@roo-code/types"
+import {
+	BEDROCK_1M_CONTEXT_MODEL_IDS,
+	BEDROCK_SERVICE_TIER_MODEL_IDS,
+	bedrockModels,
+	ApiProviderError,
+} from "@roo-code/types"
 
 import type { Anthropic } from "@anthropic-ai/sdk"
 
@@ -371,6 +376,103 @@ describe("AwsBedrockHandler", () => {
 				expect(result.modelId).toBe("ap.anthropic.claude-3-5-sonnet-20241022-v2:0") // Should be preserved as-is
 			})
 		})
+
+		describe("AWS GovCloud and China partition support", () => {
+			it("should parse AWS GovCloud ARNs (arn:aws-us-gov:bedrock:...)", () => {
+				const handler = new AwsBedrockHandler({
+					apiModelId: "test",
+					awsAccessKey: "test",
+					awsSecretKey: "test",
+					awsRegion: "us-gov-west-1",
+				})
+
+				const parseArn = (handler as any).parseArn.bind(handler)
+
+				const result = parseArn(
+					"arn:aws-us-gov:bedrock:us-gov-west-1:123456789012:inference-profile/us-gov.anthropic.claude-sonnet-4-5-20250929-v1:0",
+				)
+
+				expect(result.isValid).toBe(true)
+				expect(result.region).toBe("us-gov-west-1")
+				expect(result.modelType).toBe("inference-profile")
+			})
+
+			it("should parse AWS China ARNs (arn:aws-cn:bedrock:...)", () => {
+				const handler = new AwsBedrockHandler({
+					apiModelId: "test",
+					awsAccessKey: "test",
+					awsSecretKey: "test",
+					awsRegion: "cn-north-1",
+				})
+
+				const parseArn = (handler as any).parseArn.bind(handler)
+
+				const result = parseArn(
+					"arn:aws-cn:bedrock:cn-north-1:123456789012:inference-profile/anthropic.claude-3-sonnet-20240229-v1:0",
+				)
+
+				expect(result.isValid).toBe(true)
+				expect(result.region).toBe("cn-north-1")
+				expect(result.modelType).toBe("inference-profile")
+			})
+
+			it("should accept GovCloud custom ARN in handler constructor", () => {
+				const handler = new AwsBedrockHandler({
+					apiModelId: "anthropic.claude-3-5-sonnet-20241022-v2:0",
+					awsAccessKey: "test-access-key",
+					awsSecretKey: "test-secret-key",
+					awsRegion: "us-gov-west-1",
+					awsCustomArn:
+						"arn:aws-us-gov:bedrock:us-gov-west-1:123456789012:inference-profile/us-gov.anthropic.claude-sonnet-4-5-20250929-v1:0",
+				})
+
+				// Should not throw and should return valid model info
+				const modelInfo = handler.getModel()
+				expect(modelInfo.id).toBe(
+					"arn:aws-us-gov:bedrock:us-gov-west-1:123456789012:inference-profile/us-gov.anthropic.claude-sonnet-4-5-20250929-v1:0",
+				)
+				expect(modelInfo.info).toBeDefined()
+			})
+
+			it("should accept China region custom ARN in handler constructor", () => {
+				const handler = new AwsBedrockHandler({
+					apiModelId: "anthropic.claude-3-5-sonnet-20241022-v2:0",
+					awsAccessKey: "test-access-key",
+					awsSecretKey: "test-secret-key",
+					awsRegion: "cn-north-1",
+					awsCustomArn:
+						"arn:aws-cn:bedrock:cn-north-1:123456789012:inference-profile/anthropic.claude-3-sonnet-20240229-v1:0",
+				})
+
+				// Should not throw and should return valid model info
+				const modelInfo = handler.getModel()
+				expect(modelInfo.id).toBe(
+					"arn:aws-cn:bedrock:cn-north-1:123456789012:inference-profile/anthropic.claude-3-sonnet-20240229-v1:0",
+				)
+				expect(modelInfo.info).toBeDefined()
+			})
+
+			it("should detect region mismatch in GovCloud ARN", () => {
+				const handler = new AwsBedrockHandler({
+					apiModelId: "test",
+					awsAccessKey: "test",
+					awsSecretKey: "test",
+					awsRegion: "us-east-1",
+				})
+
+				const parseArn = (handler as any).parseArn.bind(handler)
+
+				// Region in ARN (us-gov-west-1) doesn't match provided region (us-east-1)
+				const result = parseArn(
+					"arn:aws-us-gov:bedrock:us-gov-west-1:123456789012:inference-profile/us-gov.anthropic.claude-sonnet-4-5-20250929-v1:0",
+					"us-east-1",
+				)
+
+				expect(result.isValid).toBe(true)
+				expect(result.region).toBe("us-gov-west-1")
+				expect(result.errorMessage).toContain("Region mismatch")
+			})
+		})
 	})
 
 	describe("image handling", () => {

src/api/providers/bedrock.ts

@@ -928,22 +928,26 @@ export class AwsBedrockHandler extends BaseProvider implements SingleCompletionH
 		 * represent literal characters in the AWS ARN format, not filesystem paths. This regex will function consistently across Windows,
 		 * macOS, Linux, and any other operating system where JavaScript runs.
 		 *
+		 * Supports any AWS partition (aws, aws-us-gov, aws-cn, or future partitions).
+		 * The partition is not captured since we don't need to use it.
+		 *
 		 *  This matches ARNs like:
 		 *  - Foundation Model: arn:aws:bedrock:us-west-2::foundation-model/anthropic.claude-v2
+		 *  - GovCloud Inference Profile: arn:aws-us-gov:bedrock:us-gov-west-1:123456789012:inference-profile/us-gov.anthropic.claude-sonnet-4-5-20250929-v1:0
 		 *  - Prompt Router: arn:aws:bedrock:us-west-2:123456789012:prompt-router/anthropic-claude
 		 *  - Inference Profile: arn:aws:bedrock:us-west-2:123456789012:inference-profile/anthropic.claude-v2
 		 *  - Cross Region Inference Profile: arn:aws:bedrock:us-west-2:123456789012:inference-profile/us.anthropic.claude-3-5-sonnet-20241022-v2:0
 		 *  - Custom Model (Provisioned Throughput): arn:aws:bedrock:us-west-2:123456789012:provisioned-model/my-custom-model
 		 *  - Imported Model: arn:aws:bedrock:us-west-2:123456789012:imported-model/my-imported-model
 		 *
 		 * match[0] - The entire matched string
-		 * match[1] - The region (e.g., "us-east-1")
+		 * match[1] - The region (e.g., "us-east-1", "us-gov-west-1")
 		 * match[2] - The account ID (can be empty string for AWS-managed resources)
 		 * match[3] - The resource type (e.g., "foundation-model")
 		 * match[4] - The resource ID (e.g., "anthropic.claude-3-sonnet-20240229-v1:0")
 		 */
 
-		const arnRegex = /^arn:aws:(?:bedrock|sagemaker):([^:]+):([^:]*):(?:([^\/]+)\/([\w\.\-:]+)|([^\/]+))$/
+		const arnRegex = /^arn:[^:]+:(?:bedrock|sagemaker):([^:]+):([^:]*):(?:([^\/]+)\/([\w\.\-:]+)|([^\/]+))$/
 		let match = arn.match(arnRegex)
 
 		if (match && match[1] && match[3] && match[4]) {