Add scoped console logging

[dermatthes]

Summary

• add inherited child/scoped loggers with central per-scope log-level configuration
• add semantic console output (step, success, result, detail, skip, failure) with ANSI colors and indentation
• preserve structured context through a LogRecord
• add persistent child context via withContext() and short-lived callback context via inContext()
• add a separate failure-buffer console logger that replays recent records only when an error-level trigger occurs
• repair driver/factory inconsistencies while moving drivers to the shared record model
• raise the package requirement to PHP >= 8.5 and run CI on PHP 8.5
• migrate the unit-test suite to PHPSpec and execute it automatically in GitHub Actions
• add numbered examples for console output, scoped modules, injected child loggers, temporary context, and failure buffering

Examples

• examples/01-console.php
• examples/02-scoped-modules.php
• examples/03-injected-child-logger.php
• examples/04-temporary-context.php
• examples/05-failure-buffer.php

Validation

• PHPSpec passes on PHP 8.5 in GitHub Actions
• final PR diff checked against master; changes remain within logger implementation, specs, examples, README, Composer configuration and CI workflow