feat: 品牌替换 + 启动优化 + AGENTS.md 模板定制

- 品牌替换：OpenCode/opencode → AirCoding/aircoding（16+ 文件）
- Logo ASCII art：修复 left/right 行数不匹配导致的启动崩溃
- 启动诊断：添加 OPENCODE_PRINT_TIMING 计时探针
- dev 模式默认 --pure 跳过外部插件加载
- AGENTS.md 模板：追加 AirCoding 多 Agent 专项段落
- architect prompt + plugin：强化 AGENTS.md 产出验证

packages/tui/test/theme.test.ts

@@ -0,0 +1,81 @@
+import { expect, test } from "bun:test"
+import { mkdir, writeFile } from "node:fs/promises"
+import path from "node:path"
+import type { TerminalColors } from "@opentui/core"
+import { DEFAULT_THEMES, addTheme, allThemes, hasTheme, resolveTheme, terminalMode } from "../src/theme"
+import { discoverThemes } from "../src/context/theme"
+import { tmpdir } from "./fixture/fixture"
+
+test("addTheme writes into module theme store", () => {
+  const name = `plugin-theme-${Date.now()}`
+  expect(addTheme(name, DEFAULT_THEMES.opencode)).toBe(true)
+  expect(allThemes()[name]).toBeDefined()
+})
+
+test("addTheme keeps first theme for duplicate names", () => {
+  const name = `plugin-theme-keep-${Date.now()}`
+  const one = structuredClone(DEFAULT_THEMES.opencode)
+  const two = structuredClone(DEFAULT_THEMES.opencode)
+  one.theme.primary = "#101010"
+  two.theme.primary = "#fefefe"
+
+  expect(addTheme(name, one)).toBe(true)
+  expect(addTheme(name, two)).toBe(false)
+  expect(allThemes()[name]!.theme.primary).toBe("#101010")
+})
+
+test("addTheme ignores entries without a theme object", () => {
+  const name = `plugin-theme-invalid-${Date.now()}`
+  expect(addTheme(name, { defs: { a: "#ffffff" } })).toBe(false)
+  expect(allThemes()[name]).toBeUndefined()
+})
+
+test("hasTheme checks theme presence", () => {
+  const name = `plugin-theme-has-${Date.now()}`
+  expect(hasTheme(name)).toBe(false)
+  expect(addTheme(name, DEFAULT_THEMES.opencode)).toBe(true)
+  expect(hasTheme(name)).toBe(true)
+})
+
+test("resolveTheme rejects circular color refs", () => {
+  const item = structuredClone(DEFAULT_THEMES.opencode)
+  item.defs = { ...item.defs, one: "two", two: "one" }
+  item.theme.primary = "one"
+  expect(() => resolveTheme(item, "dark")).toThrow("Circular color reference")
+})
+
+function terminalColors(defaultBackground: string | null, palette: Array<string | null> = []): TerminalColors {
+  return {
+    palette,
+    defaultForeground: null,
+    defaultBackground,
+    cursorColor: null,
+    mouseForeground: null,
+    mouseBackground: null,
+    tekForeground: null,
+    tekBackground: null,
+    highlightBackground: null,
+    highlightForeground: null,
+  }
+}
+
+test("terminalMode derives mode from refreshed background", () => {
+  expect(terminalMode(terminalColors("#fbf1c7"))).toBe("light")
+  expect(terminalMode(terminalColors("#1a1b26"))).toBe("dark")
+})
+
+test("terminalMode does not derive mode from ANSI slot zero", () => {
+  expect(terminalMode(terminalColors(null, ["#000000"]))).toBeUndefined()
+})
+
+test("custom theme precedence follows directory order", async () => {
+  await using tmp = await tmpdir()
+  const global = path.join(tmp.path, "global")
+  const project = path.join(tmp.path, "project")
+  await mkdir(path.join(global, "themes"), { recursive: true })
+  await mkdir(path.join(project, "themes"), { recursive: true })
+  await writeFile(path.join(global, "themes", "custom.json"), JSON.stringify({ source: "global" }))
+  await writeFile(path.join(project, "themes", "custom.json"), JSON.stringify({ source: "project" }))
+
+  await expect(discoverThemes([global, project])).resolves.toEqual({ custom: { source: "project" } })
+})