chore: delete unused util/color module (#27331)

packages/opencode/test/config/agent-color.test.ts

@@ -1,9 +1,8 @@
-import { test, expect } from "bun:test"
+import { expect } from "bun:test"
 import { Effect, Layer } from "effect"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
 import { Config } from "@/config/config"
 import { Agent as AgentSvc } from "../../src/agent/agent"
-import { Color } from "@/util/color"
 import { testEffect } from "../lib/effect"
 
 const it = testEffect(Layer.mergeAll(Config.defaultLayer, AgentSvc.defaultLayer, CrossSpawnSpawner.defaultLayer))
@@ -46,16 +45,3 @@ it.instance(
     },
   },
 )
-
-test("Color.hexToAnsiBold converts valid hex to ANSI", () => {
-  const result = Color.hexToAnsiBold("#FFA500")
-  expect(result).toBe("\x1b[38;2;255;165;0m\x1b[1m")
-})
-
-test("Color.hexToAnsiBold returns undefined for invalid hex", () => {
-  expect(Color.hexToAnsiBold(undefined)).toBeUndefined()
-  expect(Color.hexToAnsiBold("")).toBeUndefined()
-  expect(Color.hexToAnsiBold("#FFF")).toBeUndefined()
-  expect(Color.hexToAnsiBold("FFA500")).toBeUndefined()
-  expect(Color.hexToAnsiBold("#GGGGGG")).toBeUndefined()
-})