Expose console command execution

[M09Ic]

Background

Menu.RunCommandArgs is the normal public entry point for programmatic execution, but it always goes through the active-menu reset flow. Some integrations prepare a menu command tree themselves and need direct access to the lower-level execution path that StartContext and RunCommandArgs use internally.

Approach

• Add Console.Execute(ctx, menu, args, async) as a small public wrapper around the existing internal execution path.
• Keep the existing execute implementation and current callers unchanged.
• Document that most callers should continue using Menu.RunCommandArgs unless they already prepared a menu.

Tests

• Added a regression test that executes a prepared menu command through Console.Execute.
• Verified the target command runs and the console execution flag is cleared afterwards.
• Ran go test ./...

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 23.59%. Comparing base (7002774) to head (48286e5).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #85      +/-   ##
==========================================
+ Coverage   22.54%   23.59%   +1.05%     
==========================================
  Files          27       27              
  Lines        2045     2047       +2     
==========================================
+ Hits          461      483      +22     
+ Misses       1554     1528      -26     
- Partials       30       36       +6     

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