coder(providers): remove retired cursor and copilot providers

Drop both retired providers from BooCoder's provider layer: acp-spawn argv cases, provider-manifest mode blocks + manifest keys, provider-commands maps, the provider-snapshot cursor model-CLI branch (+ orphaned exec/promisify imports), the agent-probe copilot ACP-detect branch, and the now-dead cursor-models module + its test. The PROVIDERS registry array already lacked both. Built-ins unchanged: claude, opencode, goose, qwen, native boocode.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/coder/src/services/provider-snapshot.ts

@@ -2,8 +2,6 @@
  * Provider snapshot cache — cold ACP probe per provider + static manifest merge.
  */
 import { homedir } from 'node:os';
-import { exec as execCb } from 'node:child_process';
-import { promisify } from 'node:util';
 import type { FastifyBaseLogger } from 'fastify';
 import type { Sql } from '../db.js';
 import type { Config } from '../config.js';
@@ -14,13 +12,10 @@ import {
   PROVIDER_MANIFEST,
 } from './provider-manifest.js';
 import { probeAcpProvider } from './acp-probe.js';
-import { parseCursorAgentModelsOutput } from './cursor-models.js';
 import type { ProviderModel, ProviderSnapshotEntry } from './provider-types.js';
 import { getManifestCommands, mergeCommands } from './provider-commands.js';
 import { readQwenSettingsModels } from './qwen-settings.js';
 
-const exec = promisify(execCb);
-
 interface AgentRow {
   name: string;
   install_path: string | null;
@@ -41,15 +36,6 @@ async function fetchLlamaSwapModels(config: Config): Promise<ProviderModel[]> {
   }
 }
 
-async function fetchCursorModelsCli(installPath: string): Promise<ProviderModel[]> {
-  try {
-    const { stdout } = await exec(`"${installPath}" models`, { timeout: 15_000, maxBuffer: 1024 * 1024 });
-    return parseCursorAgentModelsOutput(stdout);
-  } catch {
-    return [];
-  }
-}
-
 /** Prefix llama-swap model ids so they don't collide with provider-native models. */
 export function prefixLlamaSwapModels(models: ProviderModel[]): ProviderModel[] {
   return models.map((m) => ({
@@ -141,8 +127,6 @@ async function buildProviderEntry(
     const probe = await probeAcpProvider(provider.name, agentRow.install_path, cwd);
     if (probe.models.length > 0) {
       models = probe.models;
-    } else if (provider.name === 'cursor' && agentRow.install_path) {
-      models = await fetchCursorModelsCli(agentRow.install_path);
     } else if (provider.modelSource === 'llama-swap') {
       models = llamaModels;
     }