feat(kilo-gateway): add KILOCODE_VERSION support to editor header

- introduce ENV_VERSION constant in kilo-gateway and export it
- modify getEditorNameHeader to append version when provided
- export ENV_VERSION from gateway index for external use
- initialize ENV_VERSION from Installation.VERSION in opencode startup
- update tests to verify editor header with and without version

packages/kilo-gateway/src/api/constants.ts

@@ -58,6 +58,9 @@ export const DEFAULT_EDITOR_NAME = "Kilo CLI"
 /** Environment variable name for custom editor name */
 export const ENV_EDITOR_NAME = "KILOCODE_EDITOR_NAME"
 
+/** Environment variable name for version (set by CLI at startup) */
+export const ENV_VERSION = "KILOCODE_VERSION"
+
 /** Tester header value for suppressing warnings */
 export const TESTER_SUPPRESS_VALUE = "SUPPRESS"
 

packages/kilo-gateway/src/headers.ts

@@ -10,6 +10,7 @@ import {
   CONTENT_TYPE,
   DEFAULT_EDITOR_NAME,
   ENV_EDITOR_NAME,
+  ENV_VERSION,
   TESTER_SUPPRESS_VALUE,
   ENV_FEATURE, // kilocode_change
 } from "./api/constants.js"
@@ -45,10 +46,13 @@ export const DEFAULT_HEADERS = {
 
 /**
  * Get editor name header value
- * Defaults to "opencode" but can be customized
+ * Defaults to "Kilo CLI" but can be customized via KILOCODE_EDITOR_NAME.
+ * Appends the version from KILOCODE_VERSION when available.
  */
 export function getEditorNameHeader(): string {
-  return process.env[ENV_EDITOR_NAME] ?? DEFAULT_EDITOR_NAME
+  const name = process.env[ENV_EDITOR_NAME] ?? DEFAULT_EDITOR_NAME
+  const version = process.env[ENV_VERSION]
+  return version ? `${name} ${version}` : name
 }
 
 /**

packages/kilo-gateway/src/index.ts

@@ -93,6 +93,7 @@ export {
   HEADER_FEATURE,
   DEFAULT_EDITOR_NAME,
   ENV_EDITOR_NAME,
+  ENV_VERSION,
   TESTER_SUPPRESS_VALUE,
   ENV_FEATURE,
 } from "./api/constants.js"

packages/opencode/src/index.ts

@@ -31,7 +31,7 @@ import { SessionCommand } from "./cli/cmd/session"
 // kilocode_change start - Import telemetry, instance disposal, and legacy migration
 import { Telemetry } from "@kilocode/kilo-telemetry"
 import { Instance } from "./project/instance" // kilocode_change
-import { migrateLegacyKiloAuth, ENV_FEATURE } from "@kilocode/kilo-gateway"
+import { migrateLegacyKiloAuth, ENV_FEATURE, ENV_VERSION } from "@kilocode/kilo-gateway"
 
 // kilocode_change - set feature for tracking. 'serve' is spawned by other services
 // (extension, cloud) which set their own KILOCODE_FEATURE env var. Direct CLI use
@@ -41,6 +41,11 @@ if (!process.env[ENV_FEATURE]) {
   const isServe = process.argv.includes("serve")
   process.env[ENV_FEATURE] = isServe ? "unknown" : "cli"
 }
+
+// kilocode_change - set version so kilo-gateway can include it in the editor name header
+if (!process.env[ENV_VERSION]) {
+  process.env[ENV_VERSION] = Installation.VERSION
+}
 import { Config } from "./config/config"
 import { Auth } from "./auth"
 // kilocode_change end

packages/opencode/test/kilocode/kilo-gateway-headers.test.ts

@@ -1,7 +1,7 @@
 // kilocode_change - new file
 import { describe, it, expect, afterEach } from "bun:test"
 import { buildKiloHeaders, getFeatureHeader, getEditorNameHeader } from "@kilocode/kilo-gateway"
-import { HEADER_FEATURE, ENV_FEATURE } from "@kilocode/kilo-gateway"
+import { HEADER_FEATURE, ENV_FEATURE, ENV_VERSION, DEFAULT_EDITOR_NAME } from "@kilocode/kilo-gateway"
 
 describe("getFeatureHeader", () => {
   const original = process.env[ENV_FEATURE]
@@ -30,6 +30,28 @@ describe("getFeatureHeader", () => {
   })
 })
 
+describe("getEditorNameHeader", () => {
+  const originalVersion = process.env[ENV_VERSION]
+
+  afterEach(() => {
+    if (originalVersion === undefined) {
+      delete process.env[ENV_VERSION]
+    } else {
+      process.env[ENV_VERSION] = originalVersion
+    }
+  })
+
+  it("returns default editor name without version when KILOCODE_VERSION is not set", () => {
+    delete process.env[ENV_VERSION]
+    expect(getEditorNameHeader()).toBe(DEFAULT_EDITOR_NAME)
+  })
+
+  it("appends version when KILOCODE_VERSION is set", () => {
+    process.env[ENV_VERSION] = "1.2.3"
+    expect(getEditorNameHeader()).toBe(`${DEFAULT_EDITOR_NAME} 1.2.3`)
+  })
+})
+
 describe("buildKiloHeaders", () => {
   const original = process.env[ENV_FEATURE]