[dermatthes]

Problem

CliApplication::run($argv) uses $argv[0] only as help text. An executable named shiller registering #[CliScope('shiller')] previously required synthetic invocation run(['shiller', 'shiller', ...]) to invoke shiller init, and had to special-case another scope edit.

Change

• Normalize the executable path to its basename in CliApplication::run().
• In T_CommandSet, dispatch an unresolved top-level action through a scope named like the executable, without mutating or rewriting the caller's arguments. Explicit top-level groups still take precedence.
• Flatten just that executable-named scope into the top-level help. Nested and independent scopes still appear as groups.
• Preserve explicit legacy tool tool init calls.
• Add PHPSpec tests for executable paths, implicit tool init, independent tool edit create and tool edit resolve, help behavior, and unrelated scopes.
• Document standard $app->run($argv) usage.

No Shiller-specific names, commands, or special cases are introduced.

Downstream: leuffen/leuffen-shiller-lib PR #29 will remove its manual argv rewriting once this library change is available on dev-main.