fix(cli): make clide draw reachable as an umbrella command (T-318)

draw is single-token (no verb), so `clide draw --file x` mis-parsed as cmd
"draw.--file" — the dispatcher registered draw but the argv parser never
learned it was umbrella (unlike icon/image which use subsystem.verb). Found
driving the live install; the handler unit tests bypassed the argv path so
they missed it. Added draw to _umbrellaCommands + a parse regression test.

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

lib/src/cli/argv_to_request.dart

@@ -27,7 +27,7 @@ import 'package:clide/src/ipc/schema_v1.dart';
 /// split. Match the IDs the dispatcher exposes directly. `tail` and
 /// `events` are handled by the IPC server itself (streaming / cursor-pull
 /// event reads, T-129 / T-223) rather than the dispatcher.
-const Set<String> _umbrellaCommands = {'status', 'tail', 'events', 'version', 'ping', 'capabilities', 'instance'};
+const Set<String> _umbrellaCommands = {'status', 'tail', 'events', 'version', 'ping', 'capabilities', 'instance', 'draw'};
 
 /// Sealed result of translating argv. Caller (the IPC server, or the
 /// C client wrapper in T-126) handles either branch.

test/cli/argv_to_request_test.dart

@@ -101,6 +101,14 @@ void main() {
       expect((req.args['flags'] as Map)['since'], '5');
       expect((req.args['flags'] as Map)['filter'], 'pane');
     });
+
+    test('"draw --file card.json" reaches the draw command (T-318)', () {
+      // draw is single-token (no verb) — it must be an umbrella command, else
+      // `clide draw --file x` mis-parses as cmd "draw.--file".
+      final req = _expectOk(parseArgv(['draw', '--file', 'card.json'], requestId: 'd'));
+      expect(req.cmd, 'draw');
+      expect((req.args['flags'] as Map)['file'], 'card.json');
+    });
   });
 
   group('parseArgv — errors', () {