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/features/chat/presentation/bloc/chat_bloc_test.dart

@@ -234,7 +234,7 @@ void main() {
   });
 
   test(
-    'tool calendar_write success triggers calendar refresh callback',
+    'tool calendar_create success triggers calendar refresh callback',
     () async {
       final service = _FakeAgUiService();
       var refreshCalls = 0;
@@ -250,8 +250,9 @@ void main() {
         ToolCallResultEvent(
           messageId: 'msg-1',
           toolCallId: 'call-1',
-          toolName: 'calendar_write',
-          resultSummary: 'ok',
+          toolName: 'project_cli',
+          toolCallArgs: const {'command': 'calendar', 'subcommand': 'create'},
+          result: const {'ok': true},
           status: 'success',
           uiSchema: null,
         ),