Revert "Reject unknown init flags before migrations (#2201)"

This reverts commit d67be8b570.

src/commands/init.ts

@@ -26,8 +26,6 @@ export async function runInit(args: string[]) {
     return;
   }
 
-  validateInitFlags(args);
-
   const isSupabase = args.includes('--supabase');
   const isPGLite = args.includes('--pglite');
   const isMcpOnly = args.includes('--mcp-only');
@@ -153,65 +151,6 @@ export async function runInit(args: string[]) {
   return initPostgres({ databaseUrl, jsonOutput, apiKey, aiOpts, schemaPack, skipEmbedCheck });
 }
 
-const INIT_BOOLEAN_FLAGS = new Set([
-  '--pglite',
-  '--supabase',
-  '--mcp-only',
-  '--force',
-  '--non-interactive',
-  '--migrate-only',
-  '--json',
-  '--no-embedding',
-  '--skip-embed-check',
-]);
-
-const INIT_VALUE_FLAGS = new Set([
-  '--url',
-  '--key',
-  '--path',
-  '--schema-pack',
-  '--embedding-model',
-  '--model',
-  '--embedding-dimensions',
-  '--expansion-model',
-  '--chat-model',
-  '--mcp-url',
-  '--issuer-url',
-  '--oauth-client-id',
-  '--oauth-client-secret',
-]);
-
-function validateInitFlags(args: string[]) {
-  for (let i = 0; i < args.length; i++) {
-    const arg = args[i];
-    if (!arg.startsWith('-')) continue;
-
-    if (INIT_BOOLEAN_FLAGS.has(arg)) continue;
-
-    if (INIT_VALUE_FLAGS.has(arg)) {
-      if (i + 1 >= args.length || args[i + 1].startsWith('-')) {
-        failInitFlag(`gbrain init: ${arg} requires a value`, args.includes('--json'));
-      }
-      i += 1;
-      continue;
-    }
-
-    if (arg.startsWith('--')) {
-      failInitFlag(`gbrain init: unknown flag ${arg}`, args.includes('--json'));
-    }
-  }
-}
-
-function failInitFlag(message: string, jsonOutput: boolean): never {
-  if (jsonOutput) {
-    console.log(JSON.stringify({ status: 'error', reason: 'invalid_flag', message }));
-  } else {
-    console.error(message);
-    console.error('Run `gbrain init --help` for supported flags.');
-  }
-  process.exit(1);
-}
-
 interface ResolveAIOptionsArgs {
   verbose: string | null;        // --embedding-model
   shorthand: string | null;      // --model

test/init-migrate-only.test.ts

@@ -57,25 +57,6 @@ afterEach(() => {
 });
 
 describe('gbrain init --migrate-only — error paths', () => {
-  test('rejects unknown flags before any migrate-only side effects', () => {
-    const result = run(['init', '--migrate-only', '--dry-run']);
-    expect(result.exitCode).toBe(1);
-    expect(result.stderr).toContain('unknown flag --dry-run');
-    // Unknown safety flags must not fall through to the migration path.
-    expect(result.stderr).not.toContain('No brain configured');
-    expect(existsSync(join(tmp, '.gbrain', 'config.json'))).toBe(false);
-  });
-
-  test('unknown flags respect --json output', () => {
-    const result = run(['init', '--migrate-only', '--dry-run', '--json']);
-    expect(result.exitCode).toBe(1);
-    const lines = result.stdout.split('\n').filter((l: string) => l.trim().startsWith('{'));
-    const parsed = JSON.parse(lines[lines.length - 1]);
-    expect(parsed.status).toBe('error');
-    expect(parsed.reason).toBe('invalid_flag');
-    expect(parsed.message).toContain('unknown flag --dry-run');
-  });
-
   test('errors with clear message when no config exists', () => {
     const result = run(['init', '--migrate-only']);
     expect(result.exitCode).toBe(1);