test(mcp): stabilize lsp builtin and doctor checks

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/cli/doctor/checks/tools-lsp.test.ts

@@ -0,0 +1,96 @@
+/// <reference types="bun-types" />
+
+import { afterEach, describe, expect, it, mock } from "bun:test"
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+import { clearPluginConfigFileDetectionCache } from "../../../shared/jsonc-parser"
+
+const originalCwd = process.cwd()
+const originalOpenCodeConfigDir = process.env.OPENCODE_CONFIG_DIR
+const temporaryDirectories: string[] = []
+
+function createTemporaryDirectory(prefix: string): string {
+  const directory = mkdtempSync(join(tmpdir(), prefix))
+  temporaryDirectories.push(directory)
+  return directory
+}
+
+afterEach(() => {
+  mock.restore()
+  clearPluginConfigFileDetectionCache()
+  process.chdir(originalCwd)
+
+  if (originalOpenCodeConfigDir === undefined) {
+    delete process.env.OPENCODE_CONFIG_DIR
+  } else {
+    process.env.OPENCODE_CONFIG_DIR = originalOpenCodeConfigDir
+  }
+
+  for (const directory of temporaryDirectories.splice(0)) {
+    rmSync(directory, { recursive: true, force: true })
+  }
+})
+
+describe("getInstalledLspServers", () => {
+  it("returns empty when lsp MCP is disabled via config", async () => {
+    // given
+    const userConfigDirectory = createTemporaryDirectory("omo-tools-lsp-user-")
+    const workspaceDirectory = createTemporaryDirectory("omo-tools-lsp-workspace-")
+    const projectConfigDirectory = join(workspaceDirectory, ".opencode")
+    mkdirSync(projectConfigDirectory, { recursive: true })
+    writeFileSync(
+      join(projectConfigDirectory, "oh-my-openagent.json"),
+      JSON.stringify({ disabled_mcps: ["lsp"] }),
+      "utf-8",
+    )
+    process.env.OPENCODE_CONFIG_DIR = userConfigDirectory
+    process.chdir(workspaceDirectory)
+    clearPluginConfigFileDetectionCache()
+
+    const { getInstalledLspServers } = await import(`./tools-lsp?t=${Date.now()}-disabled`)
+
+    // when
+    const servers = getInstalledLspServers()
+
+    // then
+    expect(servers).toEqual([])
+  })
+
+  it("returns bundled lsp server info when MCP is enabled and available", async () => {
+    // given
+    const userConfigDirectory = createTemporaryDirectory("omo-tools-lsp-user-")
+    const workspaceDirectory = createTemporaryDirectory("omo-tools-lsp-enabled-")
+    const lspCliDirectory = join(workspaceDirectory, "vendor", "lsp-tools-mcp", "dist")
+    mkdirSync(lspCliDirectory, { recursive: true })
+    writeFileSync(join(lspCliDirectory, "cli.js"), "#!/usr/bin/env node\n", "utf-8")
+    process.env.OPENCODE_CONFIG_DIR = userConfigDirectory
+    process.chdir(workspaceDirectory)
+    clearPluginConfigFileDetectionCache()
+
+    const { getInstalledLspServers } = await import(`./tools-lsp?t=${Date.now()}-enabled`)
+
+    // when
+    const servers = getInstalledLspServers()
+
+    // then
+    expect(servers).toEqual([{ id: "lsp-tools-mcp", extensions: ["*"] }])
+  })
+
+  it("returns empty when lsp MCP binary is unavailable", async () => {
+    // given
+    const userConfigDirectory = createTemporaryDirectory("omo-tools-lsp-user-")
+    const workspaceDirectory = createTemporaryDirectory("omo-tools-lsp-missing-")
+    process.env.OPENCODE_CONFIG_DIR = userConfigDirectory
+    process.chdir(workspaceDirectory)
+    clearPluginConfigFileDetectionCache()
+
+    const { getInstalledLspServers } = await import(`./tools-lsp?t=${Date.now()}-missing-cli`)
+
+    // when
+    const servers = getInstalledLspServers()
+
+    // then
+    expect(servers).toEqual([])
+  })
+})