fix(setup): accept --host cursor and --host slate (#2361)

Fixes #2361.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

setup

@@ -85,7 +85,7 @@ NO_TEAM_MODE=0
 PLAN_TUNE_HOOKS_MODE=""   # "" = resolve from env/config/prompt; "yes"/"no" = explicit
 while [ $# -gt 0 ]; do
   case "$1" in
-    --host) [ -z "$2" ] && echo "Missing value for --host (expected claude, codex, kiro, factory, opencode, openclaw, hermes, gbrain, or auto)" >&2 && exit 1; HOST="$2"; shift 2 ;;
+    --host) [ -z "$2" ] && echo "Missing value for --host (expected claude, codex, kiro, factory, opencode, cursor, slate, openclaw, hermes, gbrain, or auto)" >&2 && exit 1; HOST="$2"; shift 2 ;;
     --host=*) HOST="${1#--host=}"; shift ;;
     --local) LOCAL_INSTALL=1; shift ;;
     --prefix)    SKILL_PREFIX=1; SKILL_PREFIX_FLAG=1; shift ;;
@@ -101,7 +101,7 @@ while [ $# -gt 0 ]; do
 done
 
 case "$HOST" in
-  claude|codex|kiro|factory|opencode|auto) ;;
+  claude|codex|kiro|factory|opencode|cursor|slate|auto) ;;
   openclaw)
     echo ""
     echo "OpenClaw integration uses a different model — OpenClaw spawns Claude Code"
@@ -136,7 +136,7 @@ case "$HOST" in
     echo "GBrain setup and brain skills ship from the GBrain repo."
     echo ""
     exit 0 ;;
-  *) echo "Unknown --host value: $HOST (expected claude, codex, kiro, factory, opencode, openclaw, hermes, gbrain, or auto)" >&2; exit 1 ;;
+  *) echo "Unknown --host value: $HOST (expected claude, codex, kiro, factory, opencode, cursor, slate, openclaw, hermes, gbrain, or auto)" >&2; exit 1 ;;
 esac
 
 # ─── Resolve skill prefix preference ─────────────────────────

test/setup-host-validation.test.ts

@@ -0,0 +1,45 @@
+import { describe, test, expect } from 'bun:test';
+import { spawnSync } from 'child_process';
+import * as path from 'path';
+import * as os from 'os';
+import * as fs from 'fs';
+
+const ROOT = path.resolve(import.meta.dir, '..');
+const SETUP_SCRIPT = path.join(ROOT, 'setup');
+
+function runSetupHost(host: string): { stderr: string; status: number | null; timedOut: boolean } {
+  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'gstack-setup-host-'));
+  const r = spawnSync('bash', [SETUP_SCRIPT, '--host', host], {
+    cwd: ROOT,
+    encoding: 'utf-8',
+    input: '',
+    timeout: 3000,
+    env: { ...process.env, HOME: tmpDir },
+  });
+  fs.rmSync(tmpDir, { recursive: true, force: true });
+  return {
+    stderr: r.stderr || '',
+    status: r.status,
+    timedOut: r.signal === 'SIGTERM',
+  };
+}
+
+describe('setup: --host validation accepts all registered hosts', () => {
+  test('--host cursor is accepted (not rejected as unknown)', () => {
+    const r = runSetupHost('cursor');
+    expect(r.stderr).not.toContain('Unknown --host value');
+    expect(r.status).not.toBe(1);
+  });
+
+  test('--host slate is accepted (not rejected as unknown)', () => {
+    const r = runSetupHost('slate');
+    expect(r.stderr).not.toContain('Unknown --host value');
+    expect(r.status).not.toBe(1);
+  });
+
+  test('--host nonexistent is still rejected', () => {
+    const r = runSetupHost('nonexistent');
+    expect(r.stderr).toContain('Unknown --host value');
+    expect(r.status).toBe(1);
+  });
+});