refactor(tui): clarify session tree helper

packages/opencode/src/kilocode/plugins/model-usage.ts

@@ -13,7 +13,7 @@ export function failed(result: UsageResult | undefined, sessionID: string) {
   return result?.sessionID === sessionID && !result.data
 }
 
-export function member(input: {
+export function isSessionTreeMember(input: {
   root: string
   sessionID: string
   get: (sessionID: string) => Session | undefined

packages/opencode/src/kilocode/plugins/sidebar-usage.tsx

@@ -7,8 +7,8 @@ import {
   formatCost,
   formatCount,
   formatRate,
+  isSessionTreeMember,
   label,
-  member,
   select,
   type UsageResult,
 } from "@/kilocode/plugins/model-usage"
@@ -44,7 +44,7 @@ function View(props: { api: TuiPluginApi; session_id: string }) {
   onMount(() => {
     const refresh = () => void refetch()
     const related = (sessionID: string, info?: ReturnType<typeof props.api.state.session.get>) =>
-      member({ root: props.session_id, sessionID, info, get: props.api.state.session.get })
+      isSessionTreeMember({ root: props.session_id, sessionID, info, get: props.api.state.session.get })
     const offs = [
       props.api.event.on("message.part.updated", (event) => {
         if (event.properties.part.type === "step-finish" && related(event.properties.sessionID)) refresh()

packages/opencode/test/kilocode/cli/cmd/tui/model-usage.test.ts

@@ -1,6 +1,13 @@
 import { describe, expect, test } from "bun:test"
 import type { Session } from "@kilocode/sdk/v2"
-import { failed, formatRate, label, member, select, type SessionModelUsage } from "@/kilocode/plugins/model-usage"
+import {
+  failed,
+  formatRate,
+  isSessionTreeMember,
+  label,
+  select,
+  type SessionModelUsage,
+} from "@/kilocode/plugins/model-usage"
 
 const session = (id: string, parentID?: string) =>
   ({
@@ -33,16 +40,16 @@ describe("TUI model usage", () => {
     expect(failed({ sessionID: "ses_old" }, "ses_current")).toBeFalse()
     expect(select({ sessionID: "ses_current", data }, "ses_current")).toBe(data)
     expect(failed({ sessionID: "ses_current" }, "ses_current")).toBeTrue()
-    expect(member({ root: root.id, sessionID: child.id, get: (id) => sessions.get(id) })).toBeTrue()
+    expect(isSessionTreeMember({ root: root.id, sessionID: child.id, get: (id) => sessions.get(id) })).toBeTrue()
     expect(
-      member({
+      isSessionTreeMember({
         root: root.id,
         sessionID: "ses_new",
         info: session("ses_new", child.id),
         get: (id) => sessions.get(id),
       }),
     ).toBeTrue()
-    expect(member({ root: root.id, sessionID: "ses_other", get: () => undefined })).toBeFalse()
+    expect(isSessionTreeMember({ root: root.id, sessionID: "ses_other", get: () => undefined })).toBeFalse()
     expect(
       label({
         providerID: "kilo",