refactor: clean CLI taxonomy — canonical subcommands, merged memory.update, no aliases

- calendar: split write → create/read/update/delete/share
- contacts: rename lookup → read
- memory: merge write+forget → update (unified action field in operations)
- Remove all alias/normalization logic from adapter and handlers
- Update tool_postprocessor ui_hints builders to canonical keys
- Remove frontend legacy TOOL_CALL_START/ARGS/END events and ToolCallItem
- Update SKILL.md files and protocol docs
- Update tests and settings screens

apps/test/core/chat/ag_ui_event_test.dart

@@ -20,4 +20,18 @@ void main() {
     expect(message.timestamp.isUtc, isFalse);
     expect(message.timestamp, expected);
   });
+
+  test('history message parses suggested actions', () {
+    final raw = <String, dynamic>{
+      'id': 'm2',
+      'seq': 2,
+      'role': 'assistant',
+      'content': 'done',
+      'suggestedActions': const ['查看日程', '创建会议'],
+      'timestamp': '2026-03-29T16:06:27.870001+00:00',
+    };
+
+    final message = HistoryMessage.fromJson(raw);
+    expect(message.suggestedActions, ['查看日程', '创建会议']);
+  });
 }